Used in the treatment of infections caused by susceptible bacteria in cattle. It is used in the treatment of respiratory tract infections caused by Mannheimia haemolytica, Pasteurella multocida, Haemophilus somnus, and Corynebacterium pyogenes; in bacterial foot diseases such as foot rot, interdigital necrobacillosis, and infectious pododermatitis caused by Fusobacterium necrophorum and Bacteroides melaninogenicus; and in the treatment of infectious keratoconjunctivitis caused by Moraxella bovis.