Used primarily in swine production as a feed additive to control bacterial swine dysentery and to promote growth. It helps reduce the incidence of infections caused by susceptible strains of bacteria in the gastrointestinal tract. Commonly administered in low concentrations in animal feed, especially during early growth stages. Its use is highly regulated due to concerns over residues and potential carcinogenic byproducts, leading to bans in several countries including the European Union and restrictions in others. Not approved for use in breeding animals or in food-producing animals in some regions.