NEW POLYPEPTIDIC ANTIBIOTIC PRODUCED BY A NEW SUBSPECIES OF STREPTOSPORANGIUM, AND ITS USE TO IMPROVE THE USE OF FEED IN ANIMALS

摘要

Disclosed is a novel sulfur-containing polypeptide antibiotic compound obtained by culturing Streptosporangium roseum subspecies incarnatum Routien ATCC 31265 or ATCC 31266 under aerobic conditions immersed in an aqueous nutrient medium containing assimilable sources of carbon and carbon. nitrogen. /P P This compound is useful for the treatment of microbial infections and improves feed utilization efficiency in ruminants.