Texas Administrative Code › Title 4 - AGRICULTURE › Part 2 - TEXAS ANIMAL HEALTH COMMISSION › Chapter 43 - TUBERCULOSIS › Subchapter C - ERADICATION OF TUBERCULOSIS IN CERVIDAE › Section 43.20 - Definitions

Current through Reg. 49, No. 28; July 12, 2024
The following words and terms, when used in this
					 subchapter, shall have the following meanings, unless the context clearly
					 indicates otherwise.
(1) Accredited
				  Herd--A herd that has passed at least two consecutive official tuberculosis
				  tests of all eligible animals conducted at nine to 15 month intervals, has no
				  evidence of bovine tuberculosis, and meets the requirements of the UM &
				  R
(2) Affected herd--A herd that
				  contains or has recently contained one or more animals infected with
				  Mycobacterium bovis and has not passed the required tests for release from
				  quarantine.
(3) Approved
				  laboratory--A State/Federal Veterinary Diagnostic laboratory. The primary
				  laboratory for tuberculosis histopathology and bacteriology culture and Cervid
				  TB Stat-Pak Antibody Testing shall be the National Veterinary Services
				  Laboratory, Ames, Iowa. Food Safety Inspection Service, Field Service
				  Laboratories, may be utilized for histopathology.
(4) Cervid TB Stat-Pak Antibody Test--A
				  primary supplemental serologic test used to screen for bovine tuberculosis in
				  elk, red deer, white-tailed deer, fallow deer, and reindeer only. Samples for
				  this test shall only be collected by state and federal animal health officials
				  or designated accredited veterinarians.
(5) Cervidae--All species of deer, elk, and
				  moose raised under agricultural conditions for the production of meat, the
				  production of other agricultural products, sport, or exhibition.
(6) Commission--The Texas Animal Health
				  Commission.
(7) Comparative
				  Cervical Tuberculin (CCT) Test--The intradermal injection of biologically
				  balanced bovine Purified Protein Derivative (PPD) tuberculin and avian PPD
				  tuberculin at separate sites in the mid-cervical area to determine the probable
				  presence of bovine tuberculosis (Mycobacterium bovis) by comparing the response
				  of the two tuberculins 72 hours (plus or minus six hours) following injection.
				  This test may be used for retesting Single Cervical Tuberculin Test suspects
				  and shall be administered only by an approved state or federal
				  veterinarian.
(8) Designated
				  Accredited Veterinarian (DAV)--An accredited veterinarian trained and approved
				  to conduct the Single Cervical Test for tuberculosis on Cervids and the Cervid
				  TB Stat-Pak Antibody Test for tuberculosis on elk, red deer, white-tailed deer,
				  fallow deer, and reindeer.
(9)
				  Designated Tuberculosis Epidemiologist (DTE)--An epidemiologist who has
				  demonstrated the knowledge and ability to perform the functions specified by
				  the Bovine Tuberculosis Eradication Uniform Methods and Rules. The DTE must be
				  selected jointly by the cooperating State Animal Health Official, the Area
				  Veterinarian in Charge, and the Regional Epidemiologist. The National Animal
				  Health Programs staff must concur in the appointment. The DTE has the
				  responsibility to determine the scope of epidemiological investigations, assist
				  in development of individual herd plans, and to coordinate disease surveillance
				  and eradication programs within their geographic area of responsibility. The
				  DTE has authority to make independent decisions concerning the use and
				  interpretation of diagnostic tests and management of affected herds when those
				  actions are supported by sound disease eradication principles.
(10) Direct shipment to slaughter--The
				  shipment of tuberculosis reactors and suspects and tuberculosis-exposed cervids
				  from the premises of origin, by permit, directly to a slaughtering
				  establishment operating under state or federal inspection, without diversion to
				  assembly points of any type.
(11)
				  Dual-Path Platform Test (DPP)--A secondary more specific serologic test used
				  when animals have non-negative results on the Stat-Pak test. The initial DPP is
				  run on the non-negative blood submitted for the Stat-Pak test.
(12) Herd--A group of cervids and other hoof
				  stock maintained on common ground or two or more groups of cervids and other
				  hoof stock under common ownership or supervision that are geographically
				  separated but can have an interchange or movement without regard to health
				  status. (A group is construed to mean one or more animals.)
(13) Individual Herd Plan--A written disease
				  management plan that is designed by the herd owner and/or other herd
				  representative and a State or Federal veterinarian to eradicate tuberculosis
				  from an affected herd while reducing human exposure to the disease. The herd
				  plan will include appropriate herd test frequencies, tests to be employed, and
				  any additional disease or herd management practices deemed necessary to
				  eradicate tuberculosis from the herd in an efficient and effective manner. The
				  plan must be approved by the State Animal Health Official and the Area
				  Veterinarian in Charge, and have the concurrence of the Regional or Designated
				  Tuberculosis Epidemiologist.
(14)
				  Monitored Herd--A herd on which identification records are maintained on
				  animals over one year of age slaughtered and inspected for tuberculosis at an
				  approved State/Federal slaughter facility or an approved laboratory, and
				  animals tested negative for tuberculosis in accordance with the requirements
				  for interstate movement specified in the Tuberculosis Eradication in Cervidae
				  Uniform Methods and Rules. The initial qualifying total herd size is the annual
				  average of animals one year of age or older during the initial qualifying
				  period, which period shall not exceed three years. The combined number of
				  slaughtered or tested animals in the sample must be evenly distributed over a
				  three year period, and no less than half of the qualifying animals must be
				  slaughter inspected. The rate to detect infection at a 2.0% prevalence level
				  with 95% confidence would require a maximum number of 178 animals.
Attached
					 Graphic
(15)
				  Negative animals--Cervids that show no response to a Single Cervical Tuberculin
				  test or elk, red deer, white-tailed deer, fallow deer or reindeer that test
				  negative on the Stat-Pak test. Animals that show a non-negative response on the
				  Single Cervical Tuberculin Test or the Stat-Pak test may be classified negative
				  by the DTE based upon history, secondary supplemental tests (CTT or DPP) or
				  examination of carcasses.
(16) No
				  gross lesion (NGL) animals--Cervids that do not reveal a lesion(s) of bovine
				  tuberculosis upon necropsy.
(17)
				  Official eartag--An identification eartag that provides unique identification
				  for each individual animal by conforming to the alpha-numeric National Uniform
				  Eartagging System.
(18) Official
				  tuberculosis test--A test for bovine tuberculosis applied and reported by
				  approved personnel. The official tests for cervidae are the single cervical
				  test and the comparative cervical test. The Stat-Pak test and the DPP test are
				  considered official tests for elk, red deer, white-tailed deer, fallow deer or
				  reindeer only.
(19) Permit--An
				  official document issued by a representative of the Commission, USDA APHIS-VS,
				  or an accredited veterinarian that is required to accompany reactor, suspect or
				  exposed cervids to slaughter. The permit will list the reactor tag number or
				  official eartag number in the case of suspect and exposed cervids; the owner's
				  name and address; origin and destination; number of cervids included; and the
				  purpose of the movement. If a change in destination becomes necessary, a new
				  permit must be issued by authorized personnel. No diversion from the
				  destination of the permit is allowed.
(20) Qualified herd--A cervid herd that has
				  undergone at least one complete official negative test of all eligible animals
				  within the past 12 months and is not classified as an accredited herd, has no
				  evidence of bovine tuberculosis, and meets the standards of the UM &
				  R
(21) Reactor--Any cervid that
				  shows a response to an official tuberculosis test and is classified a reactor
				  by the DTE.
(22) Single Cervical
				  Tuberculin Test (SCT)--The intradermal injection of 0.1 mL (5,000 tuberculin
				  units) of USDA PPD Bovis tuberculin in the mid-cervical region with reading by
				  visual observation and palpation in 72 hours (plus or minus six hours)
				  following injection. This test shall be administered only by a state, federal,
				  or designated accredited veterinarian.
(23) Surveyed Herd--A cervid herd in which
				  surveillance records are maintained on all animals over one year of age that
				  are surveyed for evidence of bovine tuberculosis by routine post mortem
				  inspection at an approved state/federal slaughter facility, or approved
				  diagnostic laboratory, or routine tuberculosis tests performed by a designated
				  accredited veterinarian or by other appropriate surveillance methods approved
				  by a representative of the TAHC.
(24) Suspect--Any cervid that shows a
				  response to the single cervical tuberculin test or any elk, red deer,
				  white-tailed deer, fallow deer or reindeer that test non-negative on the
				  Stat-Pak test and is not classified a reactor, or is classified suspect by a
				  supplemental tuberculosis test.
(25) Tuberculin--A product that is approved
				  by and produced under USDA license for the intradermal injection of cervids for
				  the purpose of detecting bovine tuberculosis.
(26) Tuberculosis--A disease in Cervidae
				  caused by Mycobacterium bovis (M. bovis).