Pathology of mesenteric lymph nodes of buffaloes and cattle with special reference to salmonellosis.

Enlarged mesenteric lymph nodes were collected from ninety buffaloes and sixty cattle slaughtered at Faisalabad abattoir. Among these, salmonellae were isolated from lymph nodes of 32 (21.33%) animals. Maximum preponderance of salmonellosis was recorded in animals over two years of age. Enlargement, pale to dark red in color, increased consistency and even calcification were the main gross pathological lesions. Histopathological lesions included thickened capsule, typical lymphofollicular reaction, accumulation of oedematous fluid and haemorrhages.