ASSET PURCHASE AGREEMENT


                                   AMONG


                       AGRI-NUTRITION GROUP LIMITED,

                       ZEMA ACQUISITION CORPORATION

                                    and

                             ZEMA CORPORATION


                              April 28, 1995




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                                             TABLE OF CONTENTS

                                                                           PAGE

ASSET PURCHASE AGREEMENT

ARTICLE I              PURCHASE OF ASSETS; ASSUMPTION OF LIABILITIES..... 1

1.1                    Purchase of Assets.................................1
1.2                    Assumption of Liabilities..........................2
1.3                    Employees..........................................2
1.4                    Further Assurances.................................3

ARTICLE II             PURCHASE PRICE.....................................3

2.1                    Purchase Price.....................................3
2.2                    Allocation.........................................3
2.3                    Payments...........................................4

ARTICLE III            CLOSING............................................4

3.1                    The Closing Date...................................4
3.2                    The Closing........................................4
3.3                    Physical Possession................................4
3.4                    Transfer Taxes.....................................4

ARTICLE IV             REPRESENTATIONS AND WARRANTIES OF SELLER...........5

4.1                    Organization and Qualification.....................5
4.2                    Corporate Power and Authority......................5
4.3                    No Violation.......................................5
4.4                    Financial Statements...............................6
4.5                    Absence of Undisclosed Liabilities.................6
4.6                    Conduct of Business Since the Date of the March
                         Balance Sheet Date...............................6
4.7                    Tangible Properties................................7
4.8                    Premises...........................................7
4.9                    Licenses and Permits...............................8
4.10                   Intellectual Property..............................8
4.11                   Outstanding Commitments............................8
4.12                   Title to Assets....................................9
4.13                   Litigation.........................................9
4.14                   Compliance with Law................................9
4.15                   Labor and Employee Relations......................10
4.16                   Certain Employees.................................10
4.17                   Employee Benefits.................................10
4.18                   Insurance.........................................10
4.19                   Taxes.............................................11
4.20                   Brokers...........................................11
4.21                   Environmental Laws................................11
4.22                   Books and Records.................................12
4.23                   Disclosure........................................12

ARTICLE V              REPRESENTATIONS AND WARRANTIES OF BUYER...........12

5.1                    Organization......................................12
5.2                    Buyer's Power and Authority.......................12
5.3                    No Violation......................................12
5.4                    Broker............................................13
5.5                    Financings........................................13
5.6                    Disclosure........................................13
5.7                    Capitalization and Authorization to Issue Stock...13

ARTICLE VI             COVENANTS OF SELLER...............................13

6.1                    Best Efforts Cooperation..........................13
6.2                    Access............................................13
6.3                    Insurance.........................................14
6.4                    Compliance with Laws..............................14
6.5                    Keeping of Books and Records......................14
6.6                    Actions Prior to Closing..........................14
6.7                    Litigation........................................14
6.8                    Continued Effectiveness of
                         Representations and Warranties..................15
6.9                    Discharge of Liabilities..........................15
6.10                   No Negotiations...................................15
6.11                   Monthly Statements................................15
6.12                   Charter Amendments................................15
6.13                   Issuance of Stock.................................15
6.14                   Change of Name....................................15
6.15                   Covenant Not To Compete...........................16
6.16                   Certain Agreements................................16

ARTICLE VII            COVENANTS OF THE BUYER............................16

7.1                    Best Efforts Cooperation..........................16
7.2                    Financing.........................................16
7.3                    Employee Bonuses..................................16
7.4                    Taxes.............................................16




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ARTICLE VIII           MUTUAL COVENANTS..................................17

8.1                    General Covenants.................................17
8.2                    Public Announcements..............................17
8.3                    Confidentiality...................................17

ARTICLE IX             CONDITIONS TO BUYER'S OBLIGATIONS.................18

9.1                    Representations and Warranties True...............18
9.2                    Performance                                       18
9.3                    Consents..........................................18
9.4                    No Material Adverse Change........................18
9.5                    No Actions, Suits or Proceedings..................19
9.6                    No Material Adverse Economic Event................19
9.7                    Employment Agreement and Facilities Lease.........19
9.8                    Shareholder's Guaranty............................19
9.9                    Opinion of Counsel................................19
9.10                   Closing Documents.................................19
9.11                   Approval of the Buyer and Its Counsel.............20
9.12                   Continued Employment of Bowman....................20

ARTICLE X              CONDITIONS TO SELLER'S OBLIGATIONS................20

10.1                   Representations and Warranties to be True
                         and Correct.....................................20
10.2                   Performance.......................................20
10.3                   Opinion of the Buyer's Counsel....................21
10.4                   No Actions, Suits or Proceedings..................21
10.5                   Employment Agreement..............................21
10.6                   Closing Documents.................................21
10.7                   Approval of Seller and its Counsel................21

ARTICLE XI             INDEMNIFICATION...................................21

11.1                   Survival..........................................21
11.2                   Indemnification by Seller.........................21
11.3                   Indemnification by Buyer..........................22

ARTICLE XII            TERMINATION.......................................22

12.1                   Termination.......................................22
12.2                   Effect of Termination.............................23




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ARTICLE XIII           MISCELLANEOUS......................................23

13.1                   Notices............................................23
13.2                   Entire Agreement                                   24
13.3                   Modifications and Amendments.......................25
13.4                   Waivers and Consents...............................25
13.5                   Assignment.........................................25
13.6                   Parties in Interest................................25
13.7                   Governing Law......................................25
13.8                   Jurisdiction and Service of Process................26
13.9                   Severability.......................................26
13.10                  Interpretation.....................................26
13.11                  Headings and Captions..............................26
13.12                  Choice of Remedies and Enforcement.................26
13.13                  Expenses...........................................27
13.14                  Counterparts.......................................27


                                                     SCHEDULES

1.1(a)   -        Equipment
1.1(c)   -        Intellectual Property
1.1(d)   -        Contracts
1.2      -        March 31, 1995 Balance Sheet
2.1(c)   -        Interest Calculation Model
2.2      -        Purchase Price Allocation
2.3      -        Payment Assignees
4.3      -        Consents, etc.
4.4      -        Financial Statements
4.7      -        Tangible Properties
4.8      -        Leased Premises
4.9      -        Permits
4.11     -        Terminating Customers
4.13     -        Litigation
4.14     -        Compliance with Law
4.16     -        Certain Employees
4.17     -        Employee Benefits
4.18     -        Insurance
4.21     -        Environmental Claims
9.7(a)   -        Employment Agreement
9.7(b)   -        Facilities Lease
9.8      -        Shareholder Guaranty
9.9      -        Opinion of Seller's Counsel
10.3     -        Opinion of Buyer's Counsel




<PAGE>



                        ASSET PURCHASE AGREEMENT


         THIS ASSET PURCHASE AGREEMENT is made and entered into on April 28,
1995, effective as of March 31, 1995, by and between Agri-Nutrition Group
Limited, a Delaware corporation ("Buyer"), Zema Acquisition Corporation, a
Delaware corporation that is a wholly owned subsidiary of Buyer ("Acquisition"),
and Zema Corporation, a North Carolina corporation ("Seller").

                          W I T N E S S E T H

         WHEREAS, Seller owns and operates a business consisting of the
formulation, packaging, and marketing of pet health care and grooming products
located at Raleigh, North Carolina (the "Business"); and

         WHEREAS, Buyer desires, through Acquisition, to purchase, and Seller
desires to sell, the Business as a going concern;

         THEREFORE, in consideration of the premises, and the mutual covenants,
terms and conditions contained herein, the parties hereto agree as follows:

                                 ARTICLE I
                 PURCHASE OF ASSETS; ASSUMPTION OF LIABILITIES

                  1.1 Purchase of Assets. Upon the terms and subject to the
conditions hereinafter set forth, at the Closing (as hereinafter defined) Seller
shall sell, assign, transfer and deliver to Buyer, and Buyer shall purchase,
acquire and take assignment and delivery from Seller, all of the Seller's right,
title and interest in and to all assets (wherever located) related to or used in
conjunction with the Business as they existed on March 31, 1995 (the "Purchased
Assets"). The Purchased Assets include (but are not necessarily limited to) the
following, as they existed on March 31, 1995:

     (a) Equipment. All of the machinery, equipment, fixtures, furniture, tools,
spare parts, supplies, maintenance equipment and supplies, computer hardware and
software,   automobiles   owned  by  Seller  and  used  in  the  Business   (the
"Equipment"), including the Equipment described on Schedule 1.1(a);

     (b)  Inventories.  All of the  Business's  inventories,  including  all raw
materials,  work in process,  and finished goods  inventories,  wherever located
(the "Inventories");

     (c) Intellectual  Property.  All United States and foreign patents,  patent
applications, patent licenses, trade names, trademarks, trade name and trademark
registrations and applications therefor, trade secrets,  inventions,  processes,
designs,  software,  know-how and formulae  that are in any way connected to the
business,  including the specific patents,  trade names and trademarks described
on Schedule 1.1(c) (the "Intellectual Property");

     (d)  Contracts.  All  contracts,   agreements,  leases,  arrangements,  and
commitments related to the Business,  including the specific contracts described
on Schedule 1.1(d) (the "Contracts");

     (e) Records.  All business and financial  records,  files,  correspondence,
books, manuals, documents, and trade secrets relating to the Business, including
all records relating to suppliers and customers (the "Records");

     (f) Licenses.  All licenses and permits held by the Seller  relating to the
operation of the Business (the "Licenses");

     (g) Other Intangibles. All other intangible assets, including all goodwill,
related to, or used in conjunction with, the Business;

     (h)  Accounts   Receivable.   Any  and  all  accounts   receivable,   trade
receivables,  notes  receivable,  and  other  receivables  arising  out  of  the
operation of the Business (the "Accounts Receivable"); and

     (i) Other  Assets.  All other  assets  used in or related to the  Business,
including deposits, claims and causes of action, cash, and cash equivalents.

                  1.2 Assumption of Liabilities. At the Closing Buyer shall
assume and undertake to perform (i) any and all obligations that are reflected
as "trade accounts payable" and "accrued expenses" on Seller's balance sheet as
of March 31, 1995 (the "March Balance Sheet"), which appears as Schedule 1.2;
(ii) any and all trade accounts payable incurred and expenses accrued subsequent
to the date of the March Balance Sheet; (iii) any and all contractual
obligations that are required to be performed by Seller under the Contracts
described on Schedule 1.1(d) and under any additional contracts entered into by
Seller in the ordinary course of business subsequent to the date of the March
Balance Sheet accruing, arising or relating to periods following the Closing;
and (iv) all obligations with respect to employees of Seller assumed by Buyer
pursuant to Section 1.3. The obligations of Seller to be assumed by Buyer as
defined in the preceding sentence are hereinafter referred to collectively as
the "Assumed Liabilities." Buyer shall be liable only with respect to the
Assumed Liabilities and shall not assume or be liable for any other liabilities,
debts, or obligations of Seller whatsoever.

                  1.3 Employees. Prior to the Closing Date Buyer shall offer
employment, effective immediately after the Closing, to all employees of Seller
existing on March 31, 1995, such offers of employment to be on substantially the
same terms and conditions under which said employees are currently employed by
Seller. With respect to each employee accepting such offer, Buyer shall assume
his or her accrued vacation and sick time, severance pay, and other
termination-related liabilities and claims. Seller shall remain liable for any
and all employment-related liabilities and costs, whether accrued or unaccrued
in accordance with Seller's employment policies or generally accepted accounting
principles, relating to any and all employees who do not accept Buyer's offer of
employment.
                  1.4 Further Assurances. At any time and from time to time
after the Closing Date, at the request of Buyer and without further
consideration, Seller will execute and deliver such other instruments of sale,
transfer, conveyance, assignment and confirmation as may be reasonably requested
in order more effectively to transfer, convey and assign to the Buyer and to
confirm the Buyer's title to the Purchased Assets.

                                ARTICLE II
                              PURCHASE PRICE

                  2.1 Purchase Price. The purchase price for the Purchased
Assets shall consist of the Base Purchase Price (as hereinafter defined) and the
Additional Purchase Price (as hereinafter defined, and together with the Base
Purchase Price, the "Purchase Price") determined and paid as follows:

                  (a) Base Purchase Price. The "Base Purchase Price" shall be
         $3,300,000, of which $3,000,000 shall be paid at the Closing and
         $300,000, together with interest , shall be paid on or before the third
         anniversary of the Closing.

                  (b) Additional Purchase Price. The "Additional Purchase Price"
         shall be (i) 35 percent of the cumulative earnings before taxes and
         interest ("EBIT") of Acquisition for the five years ending October 31,
         1999 in excess of $3,345,000 to the extent that such excess is
         $3,255,000 or less and (ii) 25 percent of such cumulative EBIT in
         excess of $3,345,000 to the extent that such excess is greater than
         $3,255,000. The Additional Purchase Price, together with interest
         computed as provided in Section 2.1(c), shall be paid on or before the
         tenth day following completion of the audit of the financial statements
         of such business for the year ending October 31, 1999. EBIT shall be
         determined in accordance with generally accepted accounting principles
         ("GAAP"); provided, that EBIT shall be adjusted to eliminate (i) all
         effects of any increase in Seller's book value of the Purchased Assets
         over that reflected in the March 31 Balance Sheet and (ii) all
         corporate management charges of Buyer, except charges for the fair and
         reasonable value of tangible services actually provided by Buyer with
         the consent of Seller, which consent shall not be unreasonably
         withheld.

                  (c) Interest. Interest shall be at the prime interest rate
         published by The Wall Street Journal computed on the basis of the
         average rate as of the first day of each month during the period for
         which the computation is made. Interest with respect to that portion of
         the Base Purchase Price payable on the third anniversary of the Closing
         shall be computed from the Closing Date through the date of payment.
         Interest with respect to the Additional Purchase Price shall be
         computed with respect to each of the five years ending October 31, 1999
         in accordance with the hypothetical calculation set forth in Schedule
         2.1(c).

                  2.2      Allocation.  The Purchase Price shall be allocated 
among the categories of Purchased Assets and the covenant not to compete (set 
forth in Section 6.15) based upon fair market value as set forth in Schedule 
2.2.  Buyer and Seller agree that any reporting of the Purchase Price or the 
allocation thereof on any federal or state tax return shall be consistent with
Schedule 2.2.

                  2.3 Payments. All payments of the Purchase Price shall be to
the order of Seller; provided, that in the event Seller's corporate existence
shall be terminated, all such payments due thereafter shall be made to the
individuals, at the addresses, and in the proportionate amounts set forth in
Schedule 2.3.

                                 ARTICLE III
                                   CLOSING

                  3.1 The Closing Date. Subject to the satisfaction or waiver of
each of the conditions contained in Articles IX and X of this Agreement, the
closing of the transaction contemplated by this Agreement (the "Closing") shall
be effective as of March 31, 1995 and shall take place at the offices of Wyrick,
Robbins, Yates and Ponton L.L.P., 4101 Lake Boone Trail, Suite 300, Raleigh,
North Carolina 27607, at 10:00 a.m. on April 28, 1995 or such other date
agreeable to the parties within five business days after the satisfaction or
waiver of all conditions to Closing set forth in Articles IX and X, or on such
other date or at such other location or time as may be agreed upon by the
parties (such date and time being called the "Closing Date"), but in no event
later than the Termination Date (as defined in Section 12.1(c)), unless extended
pursuant to Section 12.1(c).

                  3.2 The Closing. At the Closing, Seller shall deliver to the
Subsidiary or other designee of Buyer (i) such good and sufficient deeds, bills
of sale with covenants of warranty, endorsements, assignments, lessor's consents
and estoppels, mortgagee non-disturbance agreements, and other good and
sufficient instruments of conveyance and assignment, in form and substance
satisfactory to Buyer, necessary or desirable to vest in the Subsidiary or such
other designee all of the Seller's right, title and interest in and to the
Purchased Assets and (ii) such other certificates, instruments, documents and
opinions as are set forth in Article IX. Such delivery is being made against
delivery by Buyer to Seller of (i) a certified or bank check or wire transfer to
Seller in the amount of $3,000,000, (ii) such instruments and agreements, in
form and substance satisfactory to Seller, necessary or desirable to effect the
assumption by the Subsidiary or such designee of all liabilities and obligations
of Seller to be assumed hereunder pursuant to Section 1.2 and (iii) such other
certificates, instruments, documents and opinions as are set forth in Article X.

                  3.3      Physical Possession.  Simultaneously with the 
Closing, Seller shall deliver to Acquisition or other designee of Buyer 
possession of all of the tangible Purchased Assets.

                  3.4 Transfer Taxes. Buyer and Seller shall each be responsible
for 50 percent of any sales, use and transfer taxes imposed by federal, state,
county or local law with respect to the sale of the Purchased Assets to Buyer.


                                                         1

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                               ARTICLE IV
                  REPRESENTATIONS AND WARRANTIES OF SELLER

         Seller represents and warrants to Buyer as follows:

                  4.1 Organization and Qualification. Seller is a corporation
duly organized, validly existing and in good standing under the laws of the
state of North Carolina and is qualified as a foreign corporation in each
jurisdiction where it is required to be so qualified, except where the failure
to be so qualified would have no material adverse effect on the Business.

                  4.2 Corporate Power and Authority. Seller has full corporate
power and authority to carry on its business as now being conducted and to own,
operate and lease its properties in the places where such business is now
conducted and such properties are now owned, leased or operated. The outstanding
capital stock of Seller consists of 85,354 shares of common stock. This
Agreement and the transactions contemplated hereby have been duly approved by
the Board of Directors and the holders of a majority of the outstanding shares
of common stock of Seller, the only class of voting stock outstanding. Seller
has full corporate power and authority to enter into this Agreement and to
consummate the transactions contemplated hereby, and this Agreement and each of
the other agreements to be executed and delivered by Seller in connection
herewith constitute and will constitute the legal, valid and binding obligations
of Seller enforceable against it in accordance with their respective terms,
subject to applicable bankruptcy, reorganization, insolvency, moratorium and
other laws affecting creditors' rights generally from time to time in effect and
to general equitable principles.

                  4.3 No Violation. Except as set forth in Schedule 4.3, neither
the execution and delivery of this Agreement and the other documents and
instruments contemplated hereby and the consummation of the transactions
contemplated hereby or thereby, nor the performance of this Agreement and such
other documents and instruments in compliance with the terms and conditions
hereof and thereof, will (i) violate, conflict with or result in any breach of
any trust agreement, charter documents, bylaw, judgment, decree, order, statute
or regulation applicable to Seller, (ii) to Seller's knowledge, require any
consent, approval, authorization or permit of, or filing with or notification
to, any governmental or regulatory authority, (iii) violate, conflict with or
result in a breach, default or termination or give rise to any right of
termination, cancellation or acceleration of the maturity of any payment date of
any obligation of Seller or, to Seller's knowledge, increase or otherwise affect
the obligations of Seller under any law, rule, regulation or any judgment,
decree, order, governmental permit, license or order or any of the terms,
conditions or provisions of any mortgage, indenture, note, license, agreement or
other instrument or obligation related to Seller or to Seller's ability to
consummate the transactions contemplated hereby or thereby, except for such
defaults (or rights of termination, cancellation or acceleration) as to which
requisite waivers or consents, in form and substance satisfactory to Buyer, have
been or will be obtained in writing and provided to Buyer at or prior to the
Closing,
(iv) to Seller's knowledge, violate any order, writ, injunction, decree,
statute, rule or regulation applicable to Seller or (v) to Seller's knowledge,
result in the creation of any liability, claim, assessment, security interest,
lien, restriction, encumbrance, or right, title or interest in others
(collectively, a "Claim") upon or against the Purchased Assets.

                  4.4 Financial Statements. The financial statements of Seller
and other financial data attached hereto in Schedule 4.4 fairly present the
financial position of Seller as of their respective dates and the results of
operations of Seller for the periods presented therein, as the case may be, all
in conformity with GAAP, consistently applied, except as otherwise noted
therein.

                  4.5 Absence of Undisclosed Liabilities. Except as set forth or
reserved against in the March Balance Sheet, Seller (i) did not have as of the
date of the March Balance Sheet any material liability or obligation of any
nature, whether accrued, absolute, contingent, or otherwise and whether due or
to become due, including without limitation liabilities that may become known or
arise after the date hereof and which relate to transactions entered into or any
state of facts existing on or before the date of the March Balance Sheet that
would be required under GAAP to be shown in such balance sheet or referenced in
the notes thereto, and (ii) has not incurred since the date of the March Balance
Sheet any material liability or obligation except in the ordinary course of
business.

                  4.6 Conduct of Business Since the Date of the March Balance
Sheet. Since the date of the March Balance Sheet, there has been no material
adverse change in the condition of the Purchased Assets or the Business (a
"Material Adverse Change") nor is any such Material Adverse Change threatened,
contemplated or anticipated, and Seller has not, except as agreed in writing by
Buyer, taken or agreed to take any action that would obligate Seller to have:

                  (a)      Entered into any transaction, agreement or commitment
         with respect to the Business other than in the ordinary course of 
         business;

                  (b) Entered into or agreed to enter into any transaction,
         agreement, or commitment, or suffered the occurrence of any event or
         events, (i) that has interfered or is reasonably likely to interfere
         with the normal and usual operations of the Business or (ii) that,
         singly or in the aggregate, has resulted or is reasonably likely to
         result in a Material Adverse Change;

                  (c) Mortgaged, pledged or otherwise encumbered, or, other than
         in the ordinary course of business, sold, transferred or otherwise
         disposed of, any of the properties or assets (tangible or intangible)
         of Seller, including any claims held by Seller with respect to the
         Business;

                  (d)      Made any investment of a capital nature or entered 
         into a commitment for such investment with respect to the Business;

                  (e)      Paid any bonus compensation to any employee or 
         otherwise increased the compensation paid or payable to any such 
         person; or

                  (f)      Paid any dividend or made any other distribution to 
         stockholders.

                  4.7 Tangible Properties. Schedule 1.1(a) and Schedule 4.7
contain a true and complete list of all Equipment, Inventories, and other
tangible personal property owned by or leased to Seller and used in the Business
(the "Tangible Personal Property"). Except as shown on Schedule 4.7 with respect
to leased Tangible Personal Property, Seller has good and marketable title free
and clear of all agreements, liabilities, claims, assessments, security
interests, liens, restrictions, and encumbrances (collectively referred to as
"Claims") to the Tangible Personal Property listed as owned by Seller. With
respect to any Tangible Personal Property listed as leased by Seller, all
leases, conditional sale contracts, franchises or licenses pursuant to which
Seller may hold or use (or permit others to hold or use) such Tangible Personal
Property are valid and in full force and effect, and there is not under any of
such instruments any existing default or event of default or event which with
notice or lapse of time or both would constitute such a default; and Seller's
possession and use of such property has not been disturbed and no claim has been
asserted against Seller adverse to its rights in such leasehold interests. All
Tangible Personal Property is conveyed "as is" and "with all faults," and Seller
disclaims any warranty of fitness for a particular purpose or merchantability
with respect thereto; provided that Seller knows of no condition rendering any
Tangible Property currently inadequate or unsuitable for the purpose for which
it is currently used, except as set forth on Schedule 1.1(a) and Schedule 4.7.
The Equipment listed on Schedule 1.1(a) comprises substantially all the
Equipment that is materially necessary for the continuing operation of the
Business in the manner in which it has been operated to date.

     4.8 Premises. Seller owns no real property in connection with the Business.
The  real  property  (the  "Leased  Premises")  and the  leases  (the  "Leases")
described on Schedule 4.8 represent  all the real  property  leased or subleased
and real  property  leases and  subleases  entered into in  connection  with the
Business,  and the  descriptions of such Leased Premises and Leases are true and
complete.  Each Lease is in full force and effect, and there is not under any of
the Leases any existing material default or event of default or event which with
notice or lapse of time or both  would  constitute  such a  default.  Each Lease
conveys good and marketable  leasehold title to the leased real estate purported
to  be  conveyed  thereunder,  is  enforceable  by  Seller,  provides  exclusive
possession  of the  Leased  Premises,  and upon any  assignment  to Buyer at the
Closing will be  enforceable by Buyer in accordance  with its terms.  Seller has
the  right to use the  Leased  Premises  in  accordance  with the  terms of each
respective  Lease free and clear of all Claims.  The Leased  Premises are leased
"as is";  provided  that  Seller  knows of no  condition  rendering  any  Leased
Premises  currently  inadequate  or  unsuitable  for the purpose for which it is
currently  used,  except as set forth on Schedule  4.8.  To Seller's  knowledge,
except as set forth in Section 4.21, all structures,  improvements  and fixtures
on the Leased  Premises and the current uses of the Leased  Premises  conform in
all material respects to any and all material applicable federal,  state, county
and local laws,  building,  health and safety and other ordinances,  laws, rules
and regulations.  There is no violation of any material covenant, restriction or
other  agreement  or  understanding,  oral or written,  affecting or relating to
title or use of any Leased Premises. To Seller's knowledge, there are no pending
or threatened  condemnation or similar proceedings or assessments  affecting any
of the Leased Premises,  nor to Seller's  knowledge is any such  condemnation or
assessment contemplated by any governmen tal authority.  Seller has delivered to
Buyer true and correct copies of all Leases,  as amended to date. At or prior to
the  Closing,  Seller will have  delivered to Buyer  non-disturbance  agreements
executed and  delivered  by each  mortgagee  of each Leased  Premises  listed on
Schedule 4.8, in form and substance satisfactory to Buyer.

                  4.9 Licenses and Permits. Schedule 4.9 lists all material
licenses, permits, product registrations, pending applications, consents,
approvals and authorizations of or from any public or governmental agency, used
in or otherwise necessary for the conduct of the Business (collectively, the
"Permits") together with any conditions imposed thereon, each of which, except
as disclosed on Schedule 4.9, will be duly and validly transferred to Buyer on
the Closing Date. To Seller's knowledge, Seller has complied with all material
conditions and requirements imposed by the Permits and has not received any
notice that any appropriate authority intends to cancel, terminate, or suspend
any of the Permits and has no reason to believe that valid grounds for such
cancellation, termination, or suspension exist. Seller owns or has the right to
use the Permits in accordance with the terms thereof without any conflict or
alleged conflict or infringement with the rights of others and subject to no
Claim, and each Permit is valid and in full force and effect and, except as
disclosed in Schedule 4.9, no Permit transferred to Buyer will be subject to
termination, terminated, or adversely affected by such transfer.

                  4.10 Intellectual Property. To Seller's knowledge, Seller
owns, or is licensed or otherwise has the full and unrestricted right to use,
all patents, trademarks, trade names, copyrights, technology, know-how, trade
secrets, processes, formulas and techniques used in connection with the
operation of the Business, including all Intellectual Property described on
Schedule 1.1(c). Seller has not granted to any other person any license or other
right to use in any manner any of the Intellectual Property, whether or not
requiring the payment of royalties. To the knowledge of Seller (i) no other
person has a right or license granted directly or indirectly by or through
Seller to use any Intellectual Property; (ii) none of the Intellectual Property
is being infringed by others, or is subject to any outstanding order, decree,
judgment or stipulation; and (iii) there are no claims or demands of any other
person, and no proceedings have been instituted, or are pending or threatened,
relating to the Intellectual Property.

                  4.11 Outstanding Commitments. The Contracts described on
Schedule 1.1(d) constitute all existing material contracts, agreements, leases,
subleases, commitments, licenses and franchises, whether written or oral,
relating to the Business. Seller has delivered or made available to Buyer true,
correct and complete copies of all material written Contracts, and Schedule
1.1(d) contains an accurate and complete description of all material Contracts
that are not in writing. All of the Contracts are in full force and effect,
Seller and each other party to each of the Contracts has performed all the
obligations required to be performed by it to date, and there is not under any
of the Contracts any material existing default or event of default or
event which with notice or lapse of time or both would constitute such a
default. Seller has no present expectation or intention of not fully performing
all its obligations under each of the Contracts and has no knowledge of any
breach or anticipated breach by any other party to any of the Contracts. None of
the Contracts has been terminated or notice of termination given with respect
thereto, no notice has been given by any party thereto of any alleged default
thereunder by any party thereto, and Seller is aware of no intention or right of
any party to any Contract to declare a default by another party to any Contract.
There exists no actual or, to the knowledge of Seller, threatened termination,
cancellation or limitation of the business relationship of Seller with any party
to any Contract. Except as stated in Schedule 4.11, no customer of Seller has
notified Seller that it intends to terminate or materially change its business
relationship with the Business following the consummation of the transactions
contemplated hereby.

                  4.12 Title to Assets. Seller will transfer to Buyer at the
Closing, good, marketable and undivided title to and possession of all of the
Purchased Assets, free and clear of any material Claim.

                  4.13 Litigation. Except as set forth on Schedule 4.13 and
Schedule 4.21, there is no material (i) action, suit, claim, proceeding or
investigation pending or, to the best of Seller's knowledge, threatened against
or affecting Seller (whether or not Seller is a party or prospective party
thereto) or any of the Purchased Assets, at law or in equity, or before or by
any federal, state, municipal or other governmental department, commission,
board, bureau, agency or instrumentality, domestic or foreign, (ii) pending or,
to the best of Seller's knowledge, threatened arbitration proceeding relating to
Seller or (iii) governmental inquiry, to the best of the Seller's knowledge,
pending or threatened against or involving Seller, and there is no basis for any
of the foregoing. Except as set forth on Schedule 4.13, Seller has not received
any opinion or memorandum or legal advice from legal counsel to the effect that
it is exposed, from a legal standpoint, to any liability or disadvantage which
may be material to the prospects, financial condition, operations, property or
affairs of the Business. Except as set forth on Schedule 4.13, to Seller's
knowledge, there are no outstanding orders, writs, judgments, injunctions or
decrees of any court, governmental agency or arbitration tribunal against,
involving or affecting Seller, and there are no facts or circumstances which may
result in institution of any action, suit, claim or legal, administrative or
arbitration proceeding or investigation against, involving or affecting Seller,
the Purchased Assets or, the transactions contemplated hereby.

                  4.14 Compliance with Law. Seller is not subject to any
judgment, order, writ, injunction or decree. Except as set forth in Schedule
4.14, Seller has complied in all material respects with and is not in default
under, all material laws, ordinances, legal requirements, rules, regulations and
orders applicable to it, its operations, properties, assets, products and
services. Seller is not aware of any existing law, rule, regulation or order, or
proposed law, rule, regulation or order, whether federal or state, that would
prohibit or materially restrict Buyer from, or otherwise materially adversely
affect the Buyer in, conducting the Business or owning the Purchased Assets.

                  4.15 Labor and Employee Relations. Seller is not party to or
bound by any collective bargaining agreement with any labor organization, group,
or association covering any of its employees, and Seller has no knowledge of any
attempt to organize any of their employees by any person, unit, or group seeking
to act as their bargaining agent. There are no pending or threatened charges (by
employees, their representatives or governmental authorities) of unfair labor
practices or of employment discrimination or of any other wrongful action with
respect to any aspect of employment of any employee of Seller.

                  4.16 Certain Employees. Schedule 4.16 lists the names of all
of the employees and consultants employed by Seller in connection with the
Business, together with the title or job classification of each such person and
his or her current compensation. Except as set forth on Schedule 4.16, none of
such persons has (i) an employment agreement or understanding, whether oral or
written, with Seller that is not terminable on thirty (30) days or less notice
by Seller in order to perform his or her duties without cost or other liability
to Seller or (ii) a non-competition non-disclosure and/or non-solicitation
agreement or understanding with Seller, whether written or oral, and all such
employment and other agreements are set forth on Schedule 1.1(d). Except as
otherwise stated therein, no person listed on Schedule 4.16 has indicated that
he or she intends to terminate his or her employment with Seller or seek a
material change in his or her duties or status. Set forth on Schedule 4.16 is
the amount, if any, of Seller's severance liability with respect to each person
there listed.

                  4.17 Employee Benefits. Schedule 4.17 lists all pension,
profit sharing, retirement, deferred compensation, stock purchase, stock option,
incentive, bonus, vacation, severance, disability, hospitalization, medical
insurance, life insurance, fringe benefit, welfare, and other employee benefit
plans, programs or arrangements to which Seller's employees are or may be
entitled. Each "Employee Welfare Benefit Plan" (as defined in Section 3(1) of
the Employee Retirement Income Security Act of 1974, as amended ("ERISA"))
covering any present or former employee of Seller subject to the requirements of
the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA") has
complied with all requirements for continuation coverage under group health
benefit plans under COBRA, and there are no claims against Seller for a failure
or alleged failure to comply with the COBRA continuation requirements. Each
employee plan that is subject to ERISA conforms to, and its operation and
administration are in compliance with, all applicable requirements of ERISA.
There are no actions, suits or claims pending (other than routine claims for
benefits) or threatened against any employee plan or against the assets of any
employee plan.

                  4.18 Insurance. Schedule 4.18 correctly describes (by type,
carrier, policy number, limits, premium and expiration date) the insurance
coverage carried by the Sellers with respect to the Business, which insurance
will remain in full force and effect with respect to all events occurring prior
to the Closing. Seller shall use its best efforts to name Buyer as an additional
insured under all of Seller's liability insurance policies applicable to
occurrences within five years prior to the Closing Date or to obtain the
insurers' consent to the assignment of Seller's rights under such policies to
Buyer. Seller (i) has not failed to give any notice or
present any claim under any such policy or binder in due and timely fashion,
(ii) has not received notice of cancellation or non-renewal of any such policy
or binder, (iii) is not aware of any threatened or proposed cancellation or
non-renewal of any such policy or binder and (iv) has not received notice of and
is not otherwise aware of any insurance premiums that will be materially
increased in the future. There are no outstanding claims under any such policy
which have gone unpaid for more than 45 days, or as to which the insurer has
disclaimed liability.

                  4.19 Taxes. Seller has filed all tax returns and reports
required to be filed, including returns and estimated returns, with respect to
federal, state, foreign and local taxes, and have paid in full all taxes shown
due thereon and all estimated taxes when due (together with all interest,
penalties, assessments and deficiencies assessed in connection therewith due
through the date hereof).

                  4.20 Brokers. No agent, person or firm acting on behalf of
Seller or under its authority is or will be entitled to a financial advisory
fee, brokerage commission, finder's fee or like payment in connection with the
transactions contemplated hereby.

     4.21 Environmental Laws. To Seller's knowledge,  and except as described in
Schedule  4.21,  Seller has  operated  and  continues to operate the Business in
compliance  in all  material  respects  with all Laws (as  hereinafter  defined)
relating to (i) pollution or protection of the environment, natural resources or
human health from any  Hazardous  Substances  (as  hereinafter  defined) or (ii)
nuisance, trespass or "toxic tort", including, without limitation, Laws relating
to  emissions,  discharges,  releases or  threatened  releases of any  Hazardous
Substance or otherwise  relating to the  manufacture,  processing,  importation,
distribution, use, generation,  treatment, storage, disposal,  transportation or
handling of any Hazardous  Substance  (collectively,  "Environmental  Laws"). To
Seller's knowledge, and except as described in Schedule 4.21, no Leased Premises
nor, to the knowledge of Seller, any real property contiguous thereto, is or has
been  designated  by any state,  local or federal  agency or body as a hazardous
waste disposal site or a site or location requiring investigation concerning, or
management, clean-up or removal of, any Hazardous Substance. Except as described
on Schedule 4.21, there is no material civil,  criminal or investigative action,
suit,  litigation,  hearing,  communication  (written or oral),  demand,  claim,
citation,  notice or notice of violation,  warning,  consent decree, judgment or
order  by any  person  or  entity  alleging,  claiming,  concerning  or  finding
liability or potential  liability arising out of, based on or resulting from, in
whole or in part,  (a) the  actual  or  alleged  presence,  threatened  release,
release, emission,  disposal,  storage, treatment,  transportation,  generation,
manufacture  or use of any  Hazardous  Substance  at or from any location or (b)
circumstances forming the basis of any violation,  or alleged violation,  of any
Environmental Laws (collectively, "Environmental Claims"), pending or threatened
against  Seller  or  against  any  person  or  entity  whose  liability  for any
Environmental   Claim  Seller  has  or  may  have  retained  or  assumed  either
contractually  or by  operation of law.  Except as  described on Schedule  4.21,
Seller has received no notice from any state, local or federal agency or body of
any material past or present  actions,  activities,  circumstances,  conditions,
events,  incidents or  practices,  including  the release,  threatened  release,
emission, discharge, disposal, storage, treatment,  transportation,  generation,
manufacture  or use of any Hazardous  Substance that could form the basis of any
Environmental  Claim against Seller or, to the Seller's  knowledge,  against any
person or entity whose liability for any  Environmental  Claim Seller has or may
have retained or assumed  either  contractually  or by operation of law. As used
herein, "Hazardous Substance" means any chemical, pollutant,  contaminant, waste
(including  toxic,  hazardous,  infectious,  sanitary,  solid,  radioactive  and
petroleum  waste,  toxic substance,  hazardous  substance,  extremely  hazardous
substance,  hazardous material, radioactive material, oil and petroleum product,
as such terms,  or any similar terms,  are or shall be used under any applicable
federal, state, local and foreign laws, regulations,  rules, ordinances, permits
(including,  without limitation,  authorizations,  approvals,  registrations and
licenses),   administrative  orders,   judicial  decisions  or  the  like  (all,
collectively,  "Laws")  relating to pollution or protection of the  environment,
natural resources or human health.

                  4.22 Books and Records. The books, records, accounts, ledgers
and files of Seller are accurate and complete in all material respects and have
been maintained in accordance with good business and bookkeeping practices.

                  4.23 Disclosure. All documents and schedules delivered or to
be delivered by or on behalf of Seller in connection with this Agreement and the
transactions contemplated hereby are complete, and all such documents and
schedules, together with the schedules to this Agreement, contain no untrue
statement of a material fact nor omit a material fact necessary to make the
statements contained herein or therein, in light of the circumstances in which
made, not misleading.

                                 ARTICLE V
                   REPRESENTATIONS AND WARRANTIES OF BUYER

Buyer represents and warrants to Seller as follows:

                  5.1      Organization. Buyer is a corporation duly 
incorporated, validly existing and in good standing under the laws of the State 
of Delaware.

                  5.2 Buyer's Power and Authority. Buyer has full corporate
power and authority to carry on its business as now being conducted and to own,
operate and lease its properties in the places where such business is now
conducted and such properties are now owned, leased or operated. This Agreement
and the transactions contemplated hereby have been duly approved by the Board of
Directors of Buyer. Buyer has full corporate power and authority to enter into
this Agreement and to consummate the transactions contemplated hereby, and this
Agreement and all other agreements to be executed and delivered by Buyer in
connection herewith constitute the legal, valid and binding obligations of Buyer
enforceable against it in accordance with their respective terms.

     5.3 No Violation.  Neither the execution and delivery of this Agreement and
the other documents and instruments contemplated hereby, the consummation of the
transactions  contemplated  hereby  or  thereby,  nor  the  performance  of this
Agreement and such other  documents and instruments in compliance with the terms
and conditions hereof and thereof will (i) conflict with or result in any breach
of any trust agreement,  charter  documents,  bylaw,  judgment,  decree,  order,
statute or regulation  applicable to Buyer, (ii) require any consent,  approval,
authorization  or permit of, or filing with or notification to, any governmental
or regulatory authority, (iii) result in a breach of or default (or give rise to
any right of termination,  cancellation or acceleration)  under any law, rule or
regulation or any judgment, decree, order, governmental permit, license or order
or any of the terms, conditions or provisions of any mortgage,  indenture, note,
license,  agreement or other instrument to which Buyer is a party or (v) violate
any order, writ, injunction,  decree,  statute, rule or regulation applicable to
Buyer.

                  5.4 Broker. No agent, broker, person or firm acting on behalf
of Buyer or under its authority is or will be entitled to a financial advisory
fee, brokerage commission, finder's fee or like payment from Seller in
connection with any of the transactions contemplated hereby.

     5.5  Financings.  Buyer has  sufficient  funds  available  to purchase  the
Assets.

                  5.6 Disclosure. All documents and schedules delivered or to be
delivered by or on behalf of Buyer in connection with this Agreement and the
transactions contemplated hereby are complete and neither contain any untrue
statement of a material fact nor omit a material fact necessary to make the
statements contained herein or therein, in light of the circumstances in which
made, not misleading.

                  5.7 Capitalization and Authorization to Issue Stock. Buyer is
authorized to issue 20,000,000 shares of common stock, $.01 par value per share,
of which 8,079,914 shares are issued and outstanding. At the Closing Date, all
of the shares of Buyer's common stock proposed to be issued in connection with
the transactions contemplated hereby will be duly authorized and reserved for
issuance.

                               ARTICLE VI
                           COVENANTS OF SELLER

         Seller covenants and agrees with Buyer as follows:

                  6.1 Best Efforts Cooperation. Until the Closing, Seller shall
use its best efforts in good faith to perform and fulfill all conditions and
obligations to be fulfilled or performed by it hereunder, to the end that the
transactions contemplated hereby will be fully and timely consummated.

                  6.2 Access. Until the Closing, Seller shall give Buyer, its
attorneys, accountants, and other authorized representatives complete access,
upon reasonable notice and at reasonable times, to Seller's offices, suppliers,
employees, business and financial records, contracts, business plans, budgets
and projections, agreements and commitments and other documents and information
concerning Seller and the Business and persons employed by or
doing business with Seller. In order that Buyer may have full opportunity to
make such examination and investigation as it may desire of the Business, the
Sellers will furnish the Buyer and its representatives during such period with
all such information as such representatives may reasonably request and cause
the respective officers, employees, consultants, agents, accountants, and
attorneys of Seller to cooperate fully with the representatives of Buyer in
connection with such review and examination and to make full disclosure to Buyer
of all material facts affecting Seller's financial condition and the operations,
properties, and prospects of the Business; provided, that Buyer will, until the
Closing, hold the documents and information concerning Seller and the Business
confidential in accordance with Section 8.3 hereof. Following the Closing,
Seller shall provide Buyer with access to, and upon request will deliver
originals of, any and all records relating to the Business that remain in the
possession of accountants, attorneys, and other parties.

                  6.3 Insurance. Until the Closing, Seller shall maintain with
financially sound and reputable insurers, insurance against such casualties and
contingencies and of such types and in such amounts as is customary for
companies similarly situated. In the event Seller is unable to name Buyer as an
additional assured or to obtain the consents to assignment of Seller's rights
under liability insurance policies as provided for in Section 4.18, Seller shall
maintain its corporate existence for a period of five years following the
Closing and shall submit to the jurisdiction of any court in which a claim shall
have been asserted against Buyer based upon events occurring prior to the
Closing and shall invoke any insurance coverage applicable to such events.

                  6.4 Compliance with Laws. Until the Closing, Seller shall
conduct the Business in compliance in all material respects with all applicable
laws, rules, regulations and orders.

                  6.5 Keeping of Books and Records. Until the Closing, Seller
shall keep adequate records and books of account, in which complete entries will
be made in accordance with GAAP consistently applied, reflecting all financial
transactions and in which all proper reserves for depreciation, depletion,
obsolescence, amortization, taxes, bad debts and other purposes in connection
with the Business shall be made.

                  6.6 Actions Prior to Closing. Seller shall conduct the
Business pending the Closing only in the ordinary and usual course consistent
with past practice. Without limiting the generality of the foregoing, Seller
will not, except in the ordinary and usual course, without the prior written
consent of Buyer, (i) make any acquisition or disposition of assets used in
connection with the Business, (ii) enter into any contract or release or
relinquish any material contract or other right relating to the Business, or
(iii) enter into or renew any employment agreement with any employee or grant
any increase in the compensation or benefits to, or agree to pay any bonus,
severance or termination payment or other special compensation to such person.

     6.7 Litigation. Until the Closing, Seller will promptly notify Buyer of any
lawsuits,  claims,   proceedings,  or  investigations  that  are  threatened  or
commenced  against  or by Seller or its  affiliates,  or against  any  employee,
consultant or director of Seller.

                  6.8 Continued Effectiveness of Representations and Warranties.
From the date hereof up to and including the Closing Date, (i) Seller will
conduct the Business in a manner such that the representations and warranties
contained herein shall continue to be true and correct on and as of the Closing
Date as if made on and as of the Closing Date, except for changes and events
arising as a consequence of the Closing, or actions in the ordinary and usual
course of business after the date hereof which do not have a material adverse
effect on the properties, assets, operations, or condition (financial or
otherwise) or prospects of the Business; and (ii) Seller will advise Buyer
promptly in writing of any condition or circumstance occurring from the date
hereof up to and including the Closing Date that could cause any material
representa tions or warranties of Seller to become untrue.

                  6.9 Discharge of Liabilities. Following the Closing, Seller
shall promptly and fully discharge all liabilities and obligations of or
relating to the Business or its operation incurred, accrued or relating to
periods prior to the Closing Date other than the Assumed Liabilities.

                  6.10 No Negotiations. Until the Closing, or the earlier
termination of this Agreement in accordance with its terms, Seller and each
officer, director, employee, consultant, advisor, or agent of Seller shall not,
directly or indirectly, initiate, solicit or continue discussions with, engage
in negotiations with, or provide any information to any corporation,
partnership, person or other entity or group involving the possible sale,
directly or indirectly, transfer or joint venture of any part of the Purchased
Assets, the Business, or the capital stock of Seller to any person or entity
other than Buyer.

     6.11 Monthly  Statements.  Until the Closing,  Seller will deliver to Buyer
monthly financial statements of Seller and the Business within 10 days after the
end of each month.

                  6.12 Charter Amendments. Until the Closing, Seller will not
amend or propose to amend its charter documents in any manner that could have
the effect of increasing the shareholder vote necessary to authorize the
transactions contemplated by this Agreement.

     6.13 Issuance of Stock.  Until the Closing,  Seller will not issue or cause
to be issued any additional shares of its capital stock.

     6.14 Change of Name.  Within 10 days  following  the Closing,  Seller shall
take all actions, and shall make all filings,  necessary to change the corporate
name of Seller to a new name not  containing  the word  "Zema"  or  "Pulvex"  or
otherwise confusingly similar, in the sole discretion of Buyer, to the corporate
name or products of Buyer or any of its affiliates.  From and after the Closing,
without  the prior  consent  of Buyer,  Seller  shall not  create or cause to be
created any  corporation,  partnership,  joint venture or other business  entity
that uses all or any part of the existing corporate name of Seller,  name of any
existing product of the Business,  or any term likely to be confused with all or
any part of any such name.

                  6.15 Covenant Not To Compete. For a period of seven years
following the Closing Date, neither Seller nor its President, Hal K. Bowman
("Bowman"), shall engage or become interested in, as owner, employee, partner,
through stock ownership (except for ownership of less than one percent interest
of any class of securities which are listed for trading on a national securities
exchange), investment of capital, lending of money or property, rendering of
services or otherwise, either alone or in association with others, in the
operation, management or supervision of any type of business or enterprise that
is engaged in the business of formulating, packaging, or marketing animal health
care or grooming products.

     6.16  Certain  Agreements.  Seller will not agree to do or cause to be done
any of the acts that it has covenanted not to do under this Article VI.

                              ARTICLE VII
                         COVENANTS OF THE BUYER

                  7.1 Best Efforts Cooperation. Buyer covenants and agrees that
it shall use its best efforts in good faith to perform and fulfill all
conditions and obligations to be fulfilled or performed by it hereunder to the
end that the transactions contemplated hereby will be fully and timely
consummated.

                  7.2 Financing. Buyer covenants and agrees that at the Closing,
it will have sufficient funds with which to pay that portion of the Base
Purchase Price required by Section 2.1(a) to be paid at the Closing.

                  7.3 Employee Bonuses. Buyer covenants and agrees that
following the Closing it will pay to those employees, and in such respective
proportions, designated by Bowman and approved by Buyer, whose approval shall
not be unreasonably withheld, bonuses in the aggregate amount of 10 percent of
the annual EBIT of Acquisition, calculated as provided in Section 2.1(b), for
each of the five years ending October 31, 1999 in excess of $669,000, said
bonuses to be paid in the form of shares of Buyer's common stock valued at the
closing sales price on the NASDAQ National Market on October 31 of the
respective year as to which such bonus is payable.

                  7.4 Taxes. As soon as is reasonably practicable after the
final results of Seller's operations through April 28, 1995 are available, Buyer
shall cause Acquisition to pay to Seller such amount as shall be necessary to
reimburse Seller's shareholders for any net income tax liability with respect to
the income of Seller subsequent to December 31, 1994.


                                                         2

<PAGE>


                              ARTICLE VIII
                            MUTUAL COVENANTS

     8.1 General Covenants. Following the execution of this Agreement, Buyer and
Seller agree:

                  (a) If any event should occur, either within or without the
         knowledge or control of any party, that would prevent fulfillment of
         the conditions to the obligations of any party hereto to consummate the
         transactions contemplated by this Agreement, to use its or their
         reasonable efforts to cure the same as expeditiously as possible;

                  (b) To cooperate fully with each other in preparing, filing,
         prosecuting, and taking any other actions that may be reasonable and
         necessary to obtain the consent of any governmental instrumentality, or
         any third party to accomplish the transactions contemplated by this
         Agreement;

                  (c) To deliver such other instruments of title, certificates,
         consents, endorse ments, assignments, assumptions, and other documents
         or instruments, in form reasonably acceptable to the party requesting
         the same and its counsel, as may be reasonably necessary to carry out
         and/or to comply with the terms of this Agreement and the transactions
         contemplated herein; and

                  (d) To confer on a regular basis with the other, report on
         material operational matters and promptly advise the other orally and
         in writing of any change or event having, or which, insofar as can
         reasonably be foreseen, could have, a material adverse effect on such
         party or which would cause or constitute a material breach of any of
         the representations, warranties or covenants of such party contained
         herein.

                  8.2 Public Announcements. The parties shall consult with each
other prior to the issuance by either party of any press release or any written
statement with respect to this Agreement or the transactions contemplated
hereby.

     8.3 Confidentiality.  As used herein,  "Confidential Information" means any
information  or data  that a party  has  acquired  from  another  party  that is
confidential or not otherwise available to the public,  whether oral or written,
including any analyses,  computations,  studies or other documents prepared from
such information or data by or for the directors, officers, employees, agents or
representatives  of  such  party  (collectively,  the  "Representatives"),   but
excluding  information  or data that (i) the party can  demonstrate  it lawfully
obtained or developed  prior to its first  meeting  with the other  party,  (ii)
became available to the public other than as a result of such party's  violation
of this Agreement, (iii) became available to such party from a source other than
the other party if that source was not bound by a confidentiality agreement with
such other party and such source lawfully  obtained such information or data, or
(iv) is required to be disclosed by applicable law, provided that promptly after
being  compelled to disclose any such  information  or data,  the party being so
compelled  shall provide  prompt notice  thereof to the other party so that such
other party may seek a protective order or other,appropriate  remedy. Each party
covenants and agrees that it and its Representatives shall keep confidential and
shall not disclose all Confidential  Information,  except to its Representatives
who need to know such information and keep it confidential.  Each party shall be
responsible  for any breach of this  provision  by its  Representatives.  In the
event that the Closing does not occur,  each party will  promptly  return to the
other all copies of such other party's Confidential Information.

                              ARTICLE IX
                    CONDITIONS TO BUYER'S OBLIGATIONS

         The obligation of Buyer to pay the Purchase Price on and after the
Closing Date in accordance with Section 1.2 and to consummate the other
transactions contemplated hereby is subject to the satisfaction, on or before
the Closing Date, of the following conditions each of which may be waived by
Buyer in its sole discretion:

                  9.1 Representations and Warranties True. All of the
representations and warranties of Seller contained in this Agreement or in any
schedules or other documents attached hereto or referred to herein or delivered
pursuant hereto or in connection with the transactions contemplated hereby shall
be true, correct and complete in all material respects on and as of the date
hereof and on and as of the Closing Date, as if made on and as of the Closing
Date. On the Closing Date, the President of Seller shall have executed and
delivered to Buyer a certificate, in form and substance reasonably satisfactory
to Buyer and its counsel, to such effect.

                  9.2 Performance. Seller shall have performed and complied with
all covenants and agreements contained herein required to be performed or
complied with by it prior to or at the Closing Date. The President of Seller
shall have executed and delivered to Buyer a certificate, in form and substance
reasonably satisfactory to Buyer and its counsel, to such effect and to the
further effect that all of the conditions set forth in this Article IX have been
satisfied.

                  9.3 Consents. Seller shall have obtained all requisite
approvals and consents of, and made all requisite filings with, all governmental
entities and third parties which are necessary to be obtained or made to (i)
permit the valid execution, delivery, and performance by Seller of this
Agreement, including the transfer and assignment of the Purchased Assets or (ii)
prevent any material Permit or agreement relating to the Business from
terminating prior to its scheduled termination as a result of the consummation
of the transactions contemplated hereby. In addition, Buyer shall have received
or obtained all licenses, permits, consents, approvals and authorizations from
any public or governmental agency or any third party reasonably necessary for
Buyer to own the Purchased Assets and operate the Business on and after the
Closing Date, and any appeal period with respect to the same shall have expired
without an objection thereto having been filed.

     9.4 No Material  Adverse  Change.  No Material  Adverse  Change  shall have
occurred or be threatened.

                  9.5 No Actions, Suits or Proceedings. As of the Closing Date,
no action, suit, investigation or proceeding brought by any governmental agency
or instrumentality shall be pending or, to the knowledge of the parties to this
Agreement, threatened, before any court or governmental body (i) to restrain,
prohibit, restrict or delay, or to obtain damages or a discovery order in
respect of this Agreement or the consummation of the transactions contemplated
hereby, (ii) which has resulted or may result in a Material Adverse Change, or
(iii) which has or may materially adversely affect the operation of the
Purchased Assets or has or may result in the imposition of material liability on
Buyer. No order, decree or judgment of any court or governmental body shall have
been issued and remain in effect at the Closing restraining, prohibiting,
restricting or delaying, the consummation of the transactions contemplated by
this Agreement. No insolvency proceeding of any character including without
limitation, bankruptcy, receivership, reorganization, dissolution or arrangement
with creditors, voluntary or involuntary, affecting Seller shall be pending, and
Seller shall not have taken any action in contemplation of, or which would
constitute the basis for, the institution of any such proceedings.

                  9.6 No Material Adverse Economic Event. There shall not have
occurred (i) any general suspension of trading in, or limitation on prices for
securities on the New York Stock Exchange or NASDAQ National Market, (ii) a
declaration of a banking moratorium or any suspension of payments in respect of
banks in the United States, (iii) any material limitation (whether or not
mandatory) by any governmental authority on lending institutions, or (iv) in the
case of any of the foregoing existing on the date hereof, a material
acceleration or worsening thereof.

                  9.7 Employment Agreement and Facilities Lease. Buyer and
Bowman shall have entered into an employment agreement (the "Employment
Agreement") in substantially the form set forth in Schedule 9.7(a) and Buyer
shall have entered into a lease of the premises used by Seller as its principal
facility in Raleigh, North Carolina with the owner of said premises (the
"Facilities Lease") in substantially the form set forth in Schedule 9.7(b).

     9.8 Shareholder's Guaranty.  Bowman shall have executed a personal guaranty
of the payment of up to $300,000 of Seller's indemnity  obligation under Section
11.2 in the form set forth in Schedule 9.8.

     9.9 Opinion of Counsel. Buyer shall have received the opinion of counsel to
the Sellers in substantially the form set forth as Schedule 9.9 hereto.

     9.10 Closing Documents. Seller shall have delivered all of the resolutions,
certificates, documents and instruments required by this Agreement, including:

                  (a) Resolutions of the Board of Directors and shareholders of
         Seller, certified by its Secretary, and evidence reasonably
         satisfactory to Buyer that the requisite approval of the shareholders
         of Seller has been obtained;

                  (b) Certificates of Good Standing with respect to Seller
         issued by the Secretary of State of North Carolina and of any state
         where it is qualified to do business as a foreign corporation;

                  (c)      Estoppel Certificates from the lessors under each of 
         the Leases in form and substance reasonably satisfactory to Buyer; and

                  (d) Non-disturbance agreements executed and delivered by each
         mortgagee of each Licensed Premises listed on Schedule 4.8 in form and
         substance satisfactory to Buyer.

                  9.11 Approval of the Buyer and Its Counsel. All actions,
proceedings, consents, instruments and documents required to be delivered by, or
at the behest or direction of, Seller hereunder or incident to its performance
hereunder, and all other related matters, shall be reasonably satisfactory as to
form and substance to Buyer and its counsel.

         The obligation of Buyer to pay the $300,000 portion of the Base
Purchase Price on or before the third anniversary of the Closing Date is subject
to the satisfaction, as of said third anniversary, of the following additional
condition which may be waived by Buyer in its sole discretion:

                  9.12 Continued Employment of Bowman. Bowman shall continue to
be employed by Buyer or an affiliate of Buyer unless his failure to be so
employed shall have resulted from his death or disability or from a termination
of the Employment Agreement by Buyer or any of its subsidiaries or other
affiliates for any reason other than "Just Cause" as defined by the Employment
Agreement.

                                      ARTICLE X
                           CONDITIONS TO SELLER'S OBLIGATIONS

         The obligations of Seller to transfer the Purchased Assets to Buyer and
of Seller to consummate the other transactions contemplated hereby are subject
to the satisfaction, on or before the Closing Date, of the following conditions,
each of which may be waived by Seller in its sole discretion:

                  10.1 Representations and Warranties to be True and Correct.
The representa tions and warranties contained in Article V shall be true,
complete and correct, on and as of the Closing Date, as if made on and as of
such date, and Buyer shall have delivered to Seller a certificate, in form and
substance reasonably satisfactory to Seller and its counsel, to such effect.

                  10.2 Performance. Buyer shall have performed and complied with
all agreements contained herein required to be performed or complied with by it
prior to or at the Closing Date, and Buyer shall have delivered a certificate to
Seller, in form and substance reasonably satisfactory to Seller and its counsel
to such effect.

                  10.3 Opinion of the Buyer's Counsel. Seller shall have
received from Dyer, Ellis, Joseph & Mills, counsel to Buyer, an opinion dated as
of the Closing Date substantially in the form of Schedule 10.3 hereto.

                  10.4 No Actions, Suits or Proceedings. As of the Closing Date,
no action, suit, investigation or proceeding brought by any governmental agency
or instrumentality shall be pending or, to the knowledge of the parties to this
Agreement, threatened, before any court or governmental body to restrain,
prohibit, restrict or delay, or to obtain damages or a discovery order in
respect of this Agreement or the consummation of the transactions contemplated
hereby. No order, decree or judgment of any court or governmental body shall
have been issued and remain in effect at the Closing restraining, prohibiting,
restricting or delaying, the consummation of the transactions contemplated by
this Agreement. No insolvency proceeding of any character including without
limitation, bankruptcy, receivership, reorganization, dissolution or arrangement
with creditors, voluntary or involuntary, affecting the Buyer shall be pending,
and Buyer shall not have taken any action in contemplation of, or which would
constitute the basis for, the institution of any such proceedings.

     10.5  Employment  Agreement.  Buyer and Bowman  shall have  entered into an
employment agreement in substantially the form set forth in Schedule 9.7.

     10.6 Closing Documents.  Buyer shall have delivered all of the resolutions,
certificates,  documents and instruments  required to be delivered by it by this
Agreement.

     10.7  Approval  of  Seller  and  its  Counsel.  All  actions,  proceedings,
consents,  instruments  and  documents  required to be  delivered  by, or at the
behest  or  direction  of,  Buyer  hereunder  or  incident  to  its  performance
hereunder, and all other related matters, shall be reasonably satisfactory as to
form and substance to Seller and its counsel.

                                  ARTICLE XI
                                INDEMNIFICATION

                  11.1 Survival. Every representation, warranty, covenant, and
agreement of the parties set forth in this Agreement and every one of the rights
and remedies of the other party for any one or more breaches thereof shall
survive, and not be deemed waived by, the Closing, and shall be effective
regardless of any investigation that may have been made at any time by or on
behalf of any party or its directors, officers, employees or agents; provided
that the representations and warranties of Seller set forth in Article IV shall
not survive that date which is 30 days following completion of the audit of
Buyer's financial statements for the year ended October 31, 1995.

                  11.2 Indemnification by Seller. Seller agrees to exonerate,
indemnify, and hold harmless Buyer and its, affiliates, successors, and assigns
from, against and in respect of any and all liabilities, losses, costs, damages,
charges or expenses (all such liabilities, losses, costs,
damages, charges and expenses, including any assessments, judgments, recoveries,
interest, penalties, costs and expenses (including reasonable attorneys" fees)
related thereto, being hereinafter referred to as the "Damages") based upon,
resulting from or arising as a result of (i) the failure of Seller to transfer
to Buyer good, marketable, and undivided title to the Purchased Assets free and
clear of all Claims; (ii) non-compliance with any so-called bulk sales law of
any state applicable to the transactions contemplated hereby; (iii) any and all
material liabilities of Seller of any nature, whether absolute, contingent or
otherwise, not specifically assumed by the Buyer pursuant to Section 1.2 hereof,
including liabilities for federal, state, county, local, foreign and applicable
taxes of every kind and description; (iv) any material liabilities arising under
Environmental Laws or with respect to any Environmental Claim (other than such
liabilities relating to the premises subject to the Principal Facility Lease
resulting from events occurring during Buyer's occupancy of said premises); (v)
any material misrepresentation, breach of warranty or nonfulfillment of any
agreement on the part of Seller contained in this Agreement or in any of the
instruments, documents or agreements delivered pursuant hereto; and (vi) any
material actions, claims, suits, proceedings and demands relating to any of the
foregoing; provided that (A) Seller shall have no liability under this Section
11.2 until Buyer's aggregate Damages exceed $15,000, (B) Seller's aggregate
liability under this Section 11.2 shall not exceed $600,000, (C) the first
$300,000 of such liability shall be payable solely by offset of the $300,000
portion of the Base Purchase Price or, if not payable because the condition set
forth in Section 9.12 has not been fulfilled, by Bowman pursuant to the guaranty
provided for in Section 9.8, and (D) the remaining $300,000 of such liability
shall be payable solely by offset of the first $300,000 of the Additional
Purchase Price that shall be otherwise payable; and provided further that the
resulting Damages do not arise out of any material breach of Buyer's
representations, warranties, covenants or agreements set forth in this
Agreement.

                  11.3 Indemnification by Buyer. Buyer agrees to exonerate,
indemnify and hold harmless Seller and its shareholders, officers, directors,
affiliates, successors, and assigns from, against and in respect of any and all
Damages based upon, resulting from, or arising as a result of (i) any actions,
claims, suits, proceedings and demands arising after the Closing and relating to
events occurring after the Closing; (ii) any misrepresentation, breach of
warranty or nonfulfillment of any agreement on the part of Buyer contained in
this Agreement or in any of the instruments, documents or agreements delivered
pursuant hereto or thereto; and (iii) any actions, claims, suits, proceedings
and demands relating to any of the foregoing; provided that the resulting
Damages do not arise out of any material breach of Seller's representations,
warranties, covenants or agreements set forth in this Agreement.

                               ARTICLE XII
                               TERMINATION

     12.1  Termination.  This Agreement may be terminated  and the  transactions
contemplated hereby may be abandoned at any time prior to the Closing:

                  (a)      By mutual written consent duly authorized by the 
         Boards of Directors of Seller and Buyer;

                  (b)      By Seller or Buyer if

                           (i) any court or governmental body of competent
                  jurisdiction shall have issued an order, decree or ruling, or
                  taken any other action, permanently restraining, enjoining or
                  otherwise prohibiting the transactions contemplated by this
                  Agreement, provided that no termination shall be permitted
                  under this paragraph unless the party seeking such termination
                  shall have used its reasonable best efforts to oppose such
                  issuance or taking; or

                           (ii) the other party commits any material breach of
                  its representations, warranties, or covenants set forth herein
                  and such breach has not been cured within 7 days after notice
                  is given to terminate this Agreement as a result of such
                  breach; or

                  (c) By Seller or Buyer if the conditions set forth in Articles
         IX or X, respectively, have not been satisfied or waived by June 30,
         1995 (the "Termination Date"), or by such later date not more than
         three months thereafter that Seller and Buyer shall mutually select.

         Upon the occurrence of any of the events specified in this Section 12.1
(other than paragraph (a) hereof), written notice of such event shall forthwith
be given to the other party to this Agreement, whereupon this Agreement shall
terminate.

                  12.2 Effect of Termination. In the event of the termination
and abandonment of this Agreement pursuant to Section 12.1, this Agreement,
except for the provisions of Section 8.3 and Articles XI, XII, and XIII, shall
forthwith become void and be of no effect, without any liability on the part of
any party or its affiliates, directors, officers or shareholders; provided that
nothing in this Section 12.2 shall relieve any party to this Agreement of
liability for breach of this Agreement.

                              ARTICLE XIII
                              MISCELLANEOUS

                  13.1 Notices. All notices, requests, consents and other
communications hereunder shall be in writing, shall be addressed to the
receiving party's address set forth below or to such other address as a party
may designate by notice hereunder, and shall be either (i) delivered by hand,
(ii) made by telex, telecopy or facsimile transmission with a confirmatory copy
by regular mail, (iii) sent by recognized overnight courier or (iv) sent by
registered or certified mail, return receipt requested, postage prepaid.


                                                         3

<PAGE>


         If to the Seller:

         Zema Corporation
         6514 Chapel Hill Road
         Raleigh, North Carolina  27607
         Attn:  Hal K. Bowman
         Facsimile telephone number:  919-859-2170

         with a copy to:

         Wyrick, Robbins, Yates & Ponton L.L.P.
         4101 Lake Boone Trail, Suite 300
         Raleigh, North Carolina  27607
         Attn:  Larry E. Robbins
         Facsimile telephone number:  919-781-4865

         If to the Buyer:

         Agri-Nutrition Group Limited
         13801 Riverport Drive, Suite 111
         Maryland Heights, Missouri 63043
         Attn:  George W. Daignault
         Facsimile telephone number: 314-298-0902

         With a copy to:

         Dyer, Ellis, Joseph & Mills
         600 New Hampshire Ave., N.W.
         Washington, D.C. 20037
         Attn:  Linda K. Rosenthal
         Facsimile telephone number: 202-944-3068

All notices, requests, consents and other communications hereunder shall be
deemed to have been properly given (i) if by hand, at the time of the delivery
thereof to the receiving party at the address of such party set forth above,
(ii) if made by telex, telecopy or facsimile transmission, at the time that
receipt thereof has been acknowledged by electronic confirmation or otherwise,
(iii) if sent by overnight courier, on the next business day following the day
such notice is delivered to the courier service or (iv) if sent by registered or
certified mail, on the fifth business day following the day such mailing is
made.

     13.2 Entire  Agreement.  This Agreement  together with the Schedules hereto
and the other  documents  executed  and to be  executed in  connection  herewith
(together,  the  "Documents")  embodies the entire  agreement and  understanding
between  the  parties  hereto  with  respect to the  subject  matter  hereof and
supersedes all prior oral or written agreements and  understandings  relating to
the subject matter hereof. No statement,  representation,  warranty, covenant or
agreement of any kind not expressly set forth in the Documents shall affect,  or
be used to interpret,  change or restrict,  the express terms and  provisions of
this Agreement.

     13.3  Modifications  and  Amendments.  The  terms  and  provisions  of this
Agreement may be modified or amended only by written  agreement  executed by all
parties hereto.

                  13.4 Waivers and Consents. No failure or delay by a party
hereto in exercising any right, power or remedy under this Agreement, and no
course of dealing between the parties hereto, shall operate as a waiver of any
such right, power or remedy of the party. No single or partial exercise of any
right, power or remedy under this Agreement by a party hereto, nor any
abandonment or discontinuance of steps to enforce any such right, power or
remedy, shall preclude such party from any other or further exercise thereof or
the exercise of any other right, power or remedy hereunder. The election of any
remedy by a party hereto shall not constitute a waiver of the right of such
party to pursue other available remedies. No notice to or demand on a party not
expressly required under this Agreement shall entitle the party receiving such
notice or demand to any other or further notice or demand in similar or other
circumstances or constitute a waiver of the rights of the party giving such
notice or demand to any other or further action in any circumstances without
such notice or demand. The terms and provisions of this Agreement may be waived,
or consent for the departure therefrom granted, only by written document
executed by the party entitled to the benefits of such terms or provisions. No
such waiver or consent shall be deemed to be or shall constitute a waiver or
consent with respect to any other terms or provisions of this Agreement, whether
or not similar. Each such waiver or consent shall be effective only in the
specific instance and for the purpose for which it was given, and shall not
constitute a continuing waiver or consent.

                  13.5 Assignment. Neither this Agreement, nor any right
hereunder, may be assigned by any of the parties hereto without the prior
written consent of the other parties; provided that Buyer may assign this
Agreement to Acquisition and Seller may (i) at any time following the Closing
assign this Agreement to its shareholders and (ii) at any time following the
dissolution of Seller, assign this Agreement to any parties specified in writing
to Buyer by Seller, subject to Buyer's consent thereto, which consent shall not
be unreasonably withheld.

                  13.6 Parties in Interest. This Agreement shall be binding upon
and inure solely to the benefit of each party hereto and their permitted
assigns, and nothing in this Agreement, express or implied, is intended to
confer upon any other person any rights or remedies of any nature whatsoever
under or by reason of this Agreement. Nothing in this Agreement shall be
construed to create any rights or obligations except among the parties hereto,
and no person or entity shall be regarded as a third-party beneficiary of this
Agreement.

                  13.7 Governing Law. This Agreement and the rights and
obligations of the parties hereunder shall be construed in accordance with and
governed by the internal laws of the State of North Carolina, without giving
effect to the conflict of law principles thereof.

                  13.8 Jurisdiction and Service of Process. Any legal action or
proceeding with respect to this Agreement may be brought in the courts of the
State of North Carolina or of the United States of America for the Eastern
District of North Carolina. By execution and delivery of this Agreement, each of
the parties hereto accepts for itself and in respect of its property, generally
and unconditionally, the jurisdiction of the aforesaid courts. The parties
hereby irrevocably waive any objection or defense that they may now or hereafter
have to the assertion of personal jurisdiction by any such court in any such
action or to the laying of the venue of any such action in any such court, and
hereby waive, to the extent not prohibited by law, and agree not to assert, by
way of motion, as a defense, or otherwise, in any such proceeding, any claim
that it is not subject to the jurisdiction of the above-named courts for such
proceedings. Each of the parties hereto irrevocably consents to the service of
process of any of the aforementioned courts in any such action or proceeding by
the mailing of copies thereof by registered mail, postage prepaid, to the party
at its address set forth in Section 13.1 hereof. Nothing in this Section 13.8
shall affect the rights of the parties to commence any such action in any other
forum or to serve process in any such action in any other manner permitted by
law.

                  13.9 Severability. In the event that any court of competent
jurisdiction shall finally determine that any provision, or any portion thereof,
contained in this Agreement shall be void or unenforceable in any respect, then
such provision shall be deemed limited to the extent that such court determines
it enforceable, and as so limited shall remain in full force and effect. In the
event that such court shall determine any such provision, or portion thereof
wholly unenforceable, the remaining provisions of this Agreement shall
nevertheless remain in full force and effect.

                  13.10 Interpretation. The parties hereto acknowledge and agree
that: (i) each party and its counsel reviewed and negotiated the terms and
provisions of this Agreement and have contributed to its revision; (ii) the rule
of construction to the effect that any ambiguities are resolved against the
drafting party shall not be employed in the interpretation of this Agreement;
and (iii) the terms and provisions of this Agreement shall be construed fairly
as to all parties hereto and not in favor of or against any party, regardless of
which party was generally responsible for the preparation of this Agreement.

                  13.11 Headings and Captions. The headings and captions of the
various subdivisions of this Agreement are for convenience of reference only and
shall in no way modify, or affect, or be considered in construing or
interpreting the meaning or construction of any of the terms or provisions
hereof.

     13.12 Choice of Remedies and Enforcement.  The parties shall be entitled to
pursue any and all remedies available to them, in law or in equity, in the event
of a breach of this  Agreement.  Each of the  parties  hereto  acknowledges  and
agrees  that the rights  acquired  by each party  hereunder  are unique and that
irreparable  damage would occur in the event that any of the  provisions of this
Agreement to be performed  by the other party were not  performed in  accordance
with their specific terms or were otherwise breached.  Accordingly,  in addition
to any other  remedy to which  the  parties  hereto  are  entitled  at law or in
equity,  each party hereto shall be entitled to an injunction or  injunctions to
prevent   breaches  of  this  Agreement  by  the  other  party  and  to  enforce
specifically  the terms and  provisions  hereof in any federal or state court to
which  the  parties   have   agreed   hereunder   to  submit  to   jurisdiction.
Notwithstanding  the  foregoing  provisions of this Section  13.12,  any dispute
between the parties  with  respect to the  calculation  of EBIT for  purposes of
Section 2.1(b) and Section 7.3 shall be determined by a national accounting firm
mutually agreeable to the parties, whose decision shall be final and binding.

                  13.13 Expenses. Each of the parties hereto shall pay its own
fees and expenses (including the fees of any attorneys, accountants, appraisers
or others engaged by such party) in connection with this Agreement and the
transactions contemplated hereby whether or not the transactions contemplated
hereby are consummated.

                  13.14 Counterparts. This Agreement may be executed in one or
more counterparts, and by different parties hereto on separate counterparts,
each of which shall be deemed an original, but all of which together shall
constitute one and the same instrument.

         IN WITNESS WHEREOF, Buyer and Seller have executed this Agreement as of
the day and year first above written.


AGRI-NUTRITION GROUP LIMITED                   ZEMA CORPORATION



By:                                            By:
         Title:                                            Title:


ZEMA ACQUISITION CORPORATION


By:
         Title: