抄録
A collective outbreak of bovine actinobacillosis was seen in Kushima, Miyazaki, over a period from 1975 to 1976. The disease took the form of suppurative granulomatous inflammation. The affected cattle had been fed slender flexible stems of sweet potatoes abundantly and found as such mostly after the occurrence of suppuration. Therefore, Actinobacillus may have been spread in the barn in a month or two.