Treatment and prevention of respiratory, enteric, mixed and/or complicated diseases, secondary infections and to maintain corporal weight gain. Pigs: Mycoplasmosis, mycoplasmal pneumonia (enzootic), ileitis and swine dysentery, colitis, atrophic rhinitis, pneumonias,pleuro-pneumonia, Glässer's disease, infectious synovitis, necrotic and infectious enteritis, salmonellosis, colibacillosis, cervical and joint abscess. Poultry: Chronic respiratory disease (CRD), air sacculitis and sinusitis, necrotic enteritis, bacterial enteritis, Ornithobacterium rhinotracheale, colisepticemia, infectious coryza, avian cholera, pneumonia, omphalitis, synovitis, stress or early mortality.