POLYETHER ANTIBIOTIC MI215-NF3 SUBSTANCE, PRODUCTION PROCESS THEREOF, AND AGENT FOR CONTROL OF CHICKEN COCCIDIOSIS

摘要

TITLE OF INVENTION Polyether antibiotic MI215-NF3 substance, production process thereof, and agent for control of chicken coccidiosis In the present invention, a new microbial strain which is a strain of Actinomycetes and belongs to the genus Actinomadura, namely Actinomadura sp. MI215-NF3 strain is cultured, and MI215-NF3, a novel antibiotic classifiable as a polyether antibiotic, is recovered from the resultant culture. MI215-NF3 substance and its salts obtaiend by the present invention are useful for the therapeutic treatment of chicken coccidiosis and also have useful antibacterial activities against certain species of bacteria.