Type C botulism was broken out in cattle at Pochun country, Kyonggi in Korea. The main cause was on the feed of fermented food contaminated with Clostridium botulinum. It was supposed to be contaminated with C botulinum during producing the fermented food because of either using contaminated food residues or adding contaminated additive materials like sausage. One hundred and twenty out of 642 cattle in 11 farms showed typical botulism symptoms and 95 among them died. The incubation period was from 2 to 14 days and the average incubation period was 8 days. The mortality in this case was 18.3%.