Used primarily as an antibiotic in veterinary medicine, especially in livestock such as cattle, swine, and poultry to treat bacterial infections including respiratory diseases, urinary tract infections, and wound infections. It is effective against a broad spectrum of Gram-positive and Gram-negative bacteria, as well as some intracellular pathogens. Commonly administered through feed, water, or injection, it also serves as a growth promoter in animal husbandry. In agriculture, it helps control bacterial diseases in crops and is sometimes used in aquaculture. Limited use in human medicine due to resistance and availability of safer alternatives.