| abstract |
New polyether antibiotic A80190, its acyl and alkyl ester, acyl ester and urethane derivatives, and salts thereof, are useful antibacterial and anticoccidial agents and increase feed-utilization efficiency in animals. Methods of making A80190 by culture of Actinomodura oligospora NRRL 15877 and synergistic compositions of the A80190 compounds with nicarbazin, 4,4'-dinitrocarbanilide, certain napthalenamine and benzenamine compounds and metichlorpindol are also provided. |