Tex. Agric. Code § 162.005
If cattle examined by a veterinarian show a positive reaction to the tuberculin test or show evidence of tuberculosis infection by clinical or laboratory examination, the veterinarian shall:
Acts 1981, 67th Leg., p. 1409, ch. 388, Sec. 1, eff. Sept. 1, 1981.
Amended by Acts 2001, 77th Leg., ch. 522, Sec. 2, eff. Sept. 1, 2001.