If you're putting a fluoroquinolone antibiotic into cattle for anything other than respiratory disease, you're breaking the law. This class of antibiotics includes enrofloxa-cin (Baytril 100~R) and danofloxacin (Advocin~(TM)). Illegal uses would include treatment of diarrhea (scours) or ear infections.These drugs were approved with a prohibition of extralabel (EL) use because of their importance in human medicine, and the intent to limit their uses to only those diseases where microbial safety has been demonstrated. The fluoroquinolone antibiotics areonly labeled to treat and control respiratory disease in cattle (only enrofloxacin for control, which means metaphylaxis, or mass medication on arrival), for which this use has been proven safe and effective. Any other use in cattle is illegal.
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