Veterinary Preventive Medicine-II

DIFFERENTIAL DIAGNOSIS

• Rinderpest: In Rinderpest both cattle and small ruminants are involved. The symptoms are very severe in cattle than small ruminants.
• Pasteurellosis: The disease is characterized by obvious respiratory signs, infrequent diarrhoea, and a mortality rate rarely exceeding 10 per cent. The bipolar organisms can be readily demonstrated in smears.
• CCPP: There is no digestive system involvement, and the clinical signs and lesions are confined to the respiratory system and pericardium.
• Bluetongue: Sheep are mostly affected. Swelling of the lips, muzzle, oral mucosa and coronitis are more common.
• Contagious ecthyma/orf : Proliferative necrotic lesions are seen in the lips rather than the whole oral cavity. The absence of nasal discharges and diarrhoea also distinguish orf from PPR.