8 Ill. Adm. Code 85.30
Identification Ear Tags for Livestock
Section 85
Section 85.30 Identification
Ear Tags for Livestock
a) All livestock, except purebred or crossbred animals registered
with an approved registry association, tested for brucellosis and/or
tuberculosis in the State of Illinois, shall be identified by an official ear
tag as defined at 9 CFR 78.1 (2017).
b) Purebred or crossbred animals registered with an approved
registry association may be identified for test or vaccination by registration
number, microchip, or record association approved individual tattoo.