COMPOSITIONS BIODEGRADABLES A LIBERATION MAITRISEE D'AGENTS D'AMELIORATION DE LA CROISSANCE ET LEUR UTILISATION CHEZ LES RUMINANTS

摘要

Controlled release formulations comprised of a polyether antibiotic admixed with a copolymer derived from lactic acid and glycolic acid are effective in the prolonged growth promotion of ruminants. A method for continuous dosing of active ingredients to a ruminant is provided.