The Microflora of Fodders Associated with Bovine Respiratory Disease

SUMMARY: The microflora of samples of fodder fed to cattle on 41 farms where some cattle suffered respiratory disease was comparable with the microflora of hays, previously reported. Of the 59 samples of fodder examined, 30 from 29 different farms were very mouldy and were comparable with farmer's-lung-type hay in being rich in Micropolyspora faeni and Thermoactinomyces vulgaris. The remaining samples were classified as either good or mouldy in almost equal numbers.