Official Identification is required for every bull tested: What forms of ID are official?
Unique official identification is required for each animal tested. Examples of approved individual official identification include USDA metal silver brite tags; USDA approved electronic identification devices, and breed registry tattoos with corresponding paperwork. Tags that only have a herd id number such as bangle ear tags, brands, and backtags are not considered official identification for the trichomonosis program.
