KRS 253.080

There is hereby reserved to the State of Kentucky the brands of "B" and "T" on the jaw of cattle, and "V" and "AV" on the body, and it shall be unlawful for any person other than authorized agents of the State Board of Agriculture to use any of these brands. Cattle carrying the "B" on the jaw shall be recognized as reactors to brucellosis abortus (Bangs disease). Cattle carrying the brand "T" on the jaw shall be recognized as reactors to bovine tuberculosis. Cattle carrying the brand "V" or "AV" on the body are officially calfhood vaccinated.