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).
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| Source Note: The provisions of this §43.20 adopted to be effective August 31, 1995, 20 TexReg 5857; amended to be effective October 1, 1997, 22 TexReg 11345; amended to be effective June 14, 2007, 32 TexReg 3172; amended to be effective October 7, 2013, 38 TexReg 6912 |
