<PAGE>   1
                                                                   EXHIBIT 10.25



                                PROMISSORY NOTE


     For value received, I, we or all of us hereby promise to pay to the order
of WALKER RESOURCES, INC., P. O. Box 8430, Metairie, La  70003, the sum of ONE
MILLION TWO HUNDRED FIFTY THOUSAND AND 00/100 ($1,250,000.00) DOLLARS, with
interest thereon payable at the rate of Eight and 00/100 (8.0%) per cent, to be
paid as follows:

     Eighty-four (84) equal, consecutive monthly installments, each in the
     amount of Nineteen Thousand Four Hundred Eighty-two and 77/100 ($19,482.77)
     Dollars. The first installment is due on the 1st day of December, 1993 with
     subsequent installments on the 1st day of each month thereafter until paid.

     Failure to pay any installment promptly when due shall, at the option of
the holder, immediately mature the entire unpaid balance, with interest thereon
from maturity until paid.

     In the event it becomes necessary to place this note in the hands of an
attorney at law for collection, an attorney fee of ten (10%) per cent of the
unpaid debt and costs shall be due and payable.

     In the event of the death, insolvency, act of bankruptcy or any bankruptcy
proceedings by or against the maker, endorser or surety of this note in any
capacity, this note shall immediately mature and become due and exigible at the
option of the holder hereof, without notice or demand.

     The maker, endorsers and sureties hereon severally waive presentment for
payment, demand, protest, notice of protest, notice of nonpayment and all pleas
of division or discussion, and consent to any and all extensions of payment.
The obligation of all, whether maker or endorser, is in solido, as original
promisors.

     Maker hereby confesses judgment in favor of holder.

     The property described and listed below, and any property that may be
substituted therefor or added thereto, or any and all other property that may
now or at any time hereafter be given or left in the possession of Holder for
any purpose by the maker of makers hereof, or any of them, or any property
belonging to any maker hereof that may come or be in possession of Holder or
that may be in transit to or from Holder for any purpose, are hereby pledged
and delivered to Holder to secure the payment of this note, and of any note
given in extension or renewal hereof, as well as for the payment of any other
obligation or liability, direct or contingent, of any of the makers hereof to
said Holder whether due or to become due, and whether now existing or hereafter
arising, with loan finance charge, attorney fees, and costs. All parties hereto
severally consent and agree that the property hereby pledged may be exchanged
or surrendered from time to time without notice to, or sent from any party
hereto, and without in any manner releasing or altering the obligations hereof.

                                             BARBE'S DAIRY, INC.
          
                                        BY:  /s/ VICTOR J. BARBE
                                            ---------------------------------
                                            VICTOR J. BARBE, President

     
<PAGE>   2
                A M O R T I Z A T I O N   S C H E D U L E                 PAGE 1
================================================================================

------ PREPARED FOR -----------        ------------- PREPARED BY ---------------
BARBE'S DAIRY, INC.                    CONNICK, LENTINI, MOULEDOUX,
                                       WIMBERLY & deLAUP
------ NAME/LOAN # ------------        833 FOURTH STREET
                                       GRETNA, LOUISIANA
================================================================================
PRINCIPAL amount of loan: $ 1,250,000.00       NUMBER OF PAYMENTS:            84
INTEREST (simple annual rate):   8.00000%      PAYMENT AMOUNT:        $ 19482.77
********************************************************************************


<TABLE>
<CAPTION>
      DUE        INTEREST       INTEREST        INTEREST       PRINCIPAL         LOAN            DATE
      DATE      THIS YEAR        TO DATE         PAYMENT        PAYMENT         BALANCE          PAID
<S>               <C>             <C>            <C>           <C>            <C>                <C>
   12/01/93       8333.33         8333.33        8333.33       11149.44       1238850.56
   01/01/94                      16592.33        8259.00       11223.77       1227626.79
   02/01/94                      24776.51        8184.18       11298.59       1216328.20
   03/01/94                      32885.36        8108.85       11373.92       1204954.28
   04/01/94                      40918.39        8033.03       11449.74       1193504.54
   05/01/94                      48875.09        7956.70       11526.07       1181978.47
   06/01/94                      56754.95        7879.86       11602.91       1170375.56
   07/01/94                      64557.45        7802.50       11680.27       1158695.29
   08/01/94                      72282.09        7724.64       11758.13       1146937.16
   09/01/94                      79928.34        7646.25       11836.52       1135100.64
   10/01/94                      87495.68        7567.34       11915.43       1123185.21
   11/01/94                      94983.58        7487.90       11994.87       1111190.34
   12/01/94      94058.19       102391.52        7407.94       12074.83       1099115.51
   01/01/95                     109718.96        7327.44       12155.33       1086960.18
   02/01/95                     116965.36        7246.40       12236.37       1074723.81
   03/01/95                     124130.19        7164.83       12317.94       1062405.87
   04/01/95                     131212.90        7082.71       12400.06       1050005.81
   05/01/95                     138212.94        7000.04       12482.73       1037523.08
   06/01/95                     145129.76        6916.82       12565.95       1024957.13
   07/01/95                     151962.81        6833.05       12649.72       1012307.41
   08/01/95                     158711.53        6748.72       12734.05        999573.36
   09/01/95                     165375.35        6663.82       12818.95        986754.41
   10/01/95                     171953.71        6578.36       12904.41        973850.00
   11/01/95                     178446.04        6492.33       12990.44        960859.56
   12/01/95      82460.25       184851.77        6405.73       13077.04        947782.52
   01/01/96                     191170.32        6318.55       13164.22        934618.30
   02/01/96                     197401.11        6230.79       13251.98        921366.32
   03/01/96                     203543.55        6142.44       13340.33        908025.99
   04/01/96                     209597.06        6053.51       13429.26        894596.73
   05/01/96                     215561.04        5963.98       13518.79        881077.94
   06/01/96                     221434.89        5873.85       13608.92        867469.02
   07/01/96                     227218.02        5783.13       13699.64        853769.38
   08/01/96                     232909.82        5691.80       13790.97        839978.41
   09/01/96                     238509.68        5599.86       13882.91        826095.50
   10/01/96                     244016.98        5507.30       13975.47        812120.03
   11/01/96                     249431.11        5414.13       14068.64        798051.39
   12/01/96      69899.68       254751.45        5320.34       14162.43        783888.96
   01/01/97                     259977.38        5225.93       14256.84        769632.12
   02/01/97                     265108.26        5130.88       14351.89        755280.23
   03/01/97                     270143.46        5035.20       14447.57        740832.66
   04/01/97                     275082.34        4938.88       14543.89        726288.77
</TABLE>
<PAGE>   3
<TABLE>
<CAPTION>
   DUE       INTEREST       INTEREST       INTEREST     PRINCIPAL      LOAN        DATE
   DATE      THIS YR.       TO DATE        PAYMENT      PAYMENT        BALANCE     PAID

<S>         <C>           <C>              <C>         <C>            <C>          <C>
 5/1/97                   279924.27        4841.93     14640.84       711647.93
 6/1/97                   284668.59        4744.32     14738.45       696909.48
 7/1/97                   289314.65        4646.06     14836.71       682072.77
 8/1/97                   293861.80        4547.15     14935.62       667137.15
 9/1/97                   298309.38        4447.58     15035.19       652101.96
10/1/97                   302656.73        4347.35     15135.42       636966.54
11/1/97                   306903.17        4246.44     15236.33       621730.21
12/1/97    56296.59       311048.04        4144.87     15337.90       606392.31
 1/1/98                   315090.66        4042.62     15440.15       590952.16
 2/1/98                   319030.34        3939.68     15543.09       575409.07
 3/1/98                   322866.40        3836.06     15646.71       559762.36
 4/1/98                   326598.15        3731.75     15751.02       544011.34
 5/1/98                   330224.89        3626.74     15856.03       528155.31
 6/1/98                   333745.93        3521.04     15961.73       512193.58
 7/1/98                   337160.55        3414.62     16068.15       496125.43
 8/1/98                   340468.05        3307.50     16175.27       479950.16
 9/1/98                   343667.72        3199.67     16283.10       463667.06
10/1/98                   346758.83        3091.11     16391.66       447275.40
11/1/98                   349740.67        2981.84     16500.93       430774.47
12/1/98    41564.46       352612.50        2871.83     16610.94       414163.53
 1/1/99                   355373.59        2761.09     16721.68       397441.85
 2/1/99                   358023.20        2649.61     16833.16       380608.69
 3/1/99                   360560.59        2537.39     16945.38       363663.31
 4/1/99                   362985.01        2424.42     17058.35       346604.96
 5/1/99                   365295.71        2310.70     17172.07       329432.89
 6/1/99                   367491.93        2196.22     17286.55       312146.34
 7/1/99                   369572.91        2080.98     17401.79       294744.55
 8/1/99                   371537.87        1964.96     17517.81       277226.74
 9/1/99                   373386.05        1848.18     17634.59       259592.15
10/1/99                   375116.66        1730.61     17752.16       241839.99
11/1/99                   376728.93        1612.27     17870.50       223969.49
12/1/99    25609.56       378222.06        1493.13     17989.64       205979.85
 1/1/00                   379595.26        1373.20     18109.57       187870.28
 2/1/00                   380847.73        1252.47     18230.30       169639.98
 3/1/00                   381978.66        1130.93     18351.84       151288.14
 4/1/00                   382987.25        1008.59     18474.18       132813.96
 5/1/00                   383872.68         885.43     18597.34       114216.62
 6/1/00                   384634.12         761.44     18721.33        95495.29
 7/1/00                   385270.76         636.64     18846.13        76649.16
 8/1/00                   385781.75         510.99     18971.78        57677.38
 9/1/00                   386166.27         384.52     19098.25        38579.13
10/1/00                   386423.46         257.19     19225.58        19353.55
11/1/00     8330.42       386552.48         129.02     19353.55             .00

                                        LAST PAYMENT   19482.57
</TABLE>