An acute outbreak of Pasteurellosis in broilers in Bidar farm

D.T. Naik, D.G.K. Rao, and S.S. Manjunatha
Department of Veterinary Pathology, Veterinary College , Bidar (Karnataka)

Dead broiler chicks, fifteen in number of fourth week were brought to the department of Pathology for Post-mortem examination with a history of sudden death. The carcasses appeared debilitated and emaciated. On cutting open the carcasses; there was ramiform congestion of both abdominal and thoracic skin. Petechial and ecchymotic hemorrhages were widely distributed. There were also subepicardial and subserosal hemorrhages in addition to hemorrhages of lungs, kidneys, caecal tonsils, abdominal fat and intestinal mucosa. Increased amounts of pericardial and peritoneal fluids were also seen. Liver was swollen containing multiple small focal areas of white necrosis. Increased amounts of viscid mucous in the digestive tract particularly in the pharynx, crop and intestine were also evident. Typically, the heart revealed vegetative endocarditis of the right ventricle. The impression smears from liver and smears from the blood revealed characteristic bipolar organisms on methylene blue staining. Finally, the organisms could be isolated from liver and heart blood and typed as P.multocida, avian strain.

Source : IPSACON-2005

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