Section 02.04.20.400 - OFFICIAL IDENTIFICATION OF SWINE01.Swine Tested at Farm. All swine bled on the farm as part of a complete herd test for swine brucellosis shall be individually identified by official VS-approved eartags, visible tattoos, or ear notches, provided the ear notch has been recorded in the book of record of a purebred registry association.02.Swine Tested at Market or Slaughter. Sows and boars six (6) months of age and older shall be identified by an official VS-approved paper or plastic backtag applied to the head or poll region and/or an official VS-approved eartag when tested for swine brucellosis at markets or slaughter establishments.03.Reactor Swine. Swine reacting to the swine brucellosis test shall be identified by placing an official VS-approved reactor tag in the left ear.Idaho Admin. Code r. 02.04.20.400