Clostridium perfringens type A による牛のEnterotoxemia

概要

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The evidence of Enterotoxemia in bovine due to Clostridium perfringens type A has been presented in the results obtained from clinical and bacteriological examinations. This is the first report of this disease in Japan. The affected animal was a 14 month old beef cattle and was housed in T farm in Obihiro city. The animal was found to be dead early on the morning of March 20, 1968. An autopsy was performed immediately and gross lesions were observed chiefly in the ileum and in its associated lymphnodes. Severe hyperemia and catarrhal inflamation were found extensively. In other organs, however, there were no marked gross lesions. In 24 hours a heavy growth of the causative agents was obtained from the bowel in its pure state on five per cent sheep blood agar plates under strict anaerobic condition at 37℃. The agents were identified as Clostridium perfringens type A, through the results of biological examination and toxin-antitoxin neutralization test in mice. Pathogenicity of the agents were also examined with the inoculation of the guinea pig. Many strains of Clostridium perfringens were easily isolated from the feces samples of calves and dairy cattle examined under the same conditions as described above. There was a marked increase in the isolation rate, especially, with the method of enrichment cultures in liquid broth media.
帯広畜産大学の論文
1970-11-25