In this subchapter:

(1) "Epidemiological investigation" means the scientific investigation conducted to determine the population of cattle or cattle herds that may be affected with or exposed to trichomoniasis.

(2) "Exposed herd notification" means owners or managers of exposed herds have been notified by the Department of Livestock or its agent that the owner's herd may have been exposed to a test positive animal or test positive herd.

(3) "Exposed herds" means cattle herds that have, within the previous twelve months, had direct commingling or cross-fence contact with a test positive animal or a test positive herd during the time of potential breeding activity.

(4) "Herd" means a group or groups of sexually intact cattle 12 months of age or older under common ownership or supervision that have commingled during the previous 12 months.

(5) "Hold order" means a restriction placed on test positive animals, test positive herds, or exposed herds prohibiting their movement from a premises or a portion of a premises to minimize exposure to other animals or herds.

(6) "Individual identification" means an official United States Department of Agriculture (USDA) eartag, a breed registry tattoo, an official state-issued trichomoniasis eartag, or any other means of permanent identification approved by the state veterinarian.

(7) "Official trichomoniasis test" means the sampling procedure conducted by a licensed veterinarian of the preputial content of a sexually intact male bovine and submitted to a laboratory accredited by the American Association of Veterinary Laboratory Diagnosticians or a laboratory approved by the state veterinarian to identify Tritrichomonas foetus by direct microscopic examination, in vitro cultivation, PCR testing, or other test approved by the state veterinarian.

(8) "Test positive animal" means an animal in which a laboratory accredited by the American Association of Veterinary Laboratory Diagnosticians or a laboratory approved by the state veterinarian has identified Tritrichomonas foetus by direct microscopic examination, in vitro cultivation, PCR testing, or other test approved by the state veterinarian.

(9) "Test positive herd" means a herd of cattle in which a licensed veterinarian or an approved laboratory has identified Tritrichomonas foetus in one or more animals by direct microscopic examination, in vitro cultivation, PCR testing, or other test approved by the state veterinarian.

(10) "Trichomoniasis" means a sexually transmitted disease of cattle caused by the protozoan organism Tritrichomonas (Trichomonas) foetus.