DISTRIBUTION OF LESIONS IN OVINE SALMONELLOSIS

Four forms of salmonellosis were recognised in feedlots and during tra nsport by sea: septicaemic, and acute, subacute and chronic enteric. T he severity and distribution of lesions in the enteric forms varied ac cording to the progression of the pathological process. The acute dise ase involved the abomasum and small Intestine whereas the subacute dis ease centred on the lower small intestine and upper large intestine. C hronic disease involved considerable mucosal repair in the Ileum, caec um and proximal colon. Septicaemic salmonellosis was often accompanied by acute enteritis and occasionally by cholecystitis. S typhimurium w as the most frequently encountered serotype.