Used in veterinary medicine as an antibacterial agent to treat infections in animals, particularly in poultry, cattle, and swine. It is effective against a wide range of Gram-negative and some Gram-positive bacteria, including E. coli, Salmonella, Pasteurella, and Mycoplasma species. Commonly administered in drinking water, feed, or by injection to control respiratory, gastrointestinal, and systemic bacterial infections. Its use is restricted to animals due to potential toxicity and regulatory concerns in human medicine.