Lamb Dysentery is enterotoxaemic disease of newborn lambs (1 day to 2 weeks), and occasionally up to 3 weeks of age. The disease is caused by the toxins produced by Cl. Perfringens (welchii) Type B, which are gram +ye anaerobic spore bearing bacteria. The spore of Genus Clostridia can exist in the soil for many years. The infection can occur by the ingestion of the organism which grow either in the intestinal contents or in the mucosa of ulcerated area of the   intestine.   The clinical signs of the disease inciude sudden death without premonitory symptoms in newborn lambs from 1-15 days and diarrhea tinged with blood. The diagnosis of the disease based on clinical signs, post mortum lesions (Hypremic and ulcerated intestines) and laboratory diagnosis by demonstration of Cl. Perfringens and its toxins in th4e intestinal contents of dead iambs. Lamb Dysentery can be prevented by immunization of ewes before iambing with Bivalent Alum Precipitated Cl. Perfringens Type B & D vaccine. Two doses are given. the second dose should be given two weeks before lambing.