POLYETHER ANTIBIOTIC MI215-NF3, PRODUCTION THEREOF, AND DRUG FOR TREATING FOWL COCCIDIOSIS

摘要

This invention relates to a new polyether antibiotic MI215-NF3 of formula (I) and salts thereof. These compounds are actinomycetes obtained from the culture of Actinomadura sp. MI215-NF3, a new strain belonging to the genus Actinomadura. They are used effectively for the treatment of fowl coccidiosis and also have a useful antibacterial activity against certain bacteria.