The black leg, black dwarf or emphysematous gangrene is an infectious bacterial disease of sheep and cattle, caused by the bacterium Clostridium chauvoei. It is found all over the world. A symptom of the black leg is the characteristic swelling that makes a cracking noise under pressure. The black leg vaccine gives immunity against the disease.
Causing organismsClostridium chauvoei
Vaccination and prevention The use of clostridial vaccination of 7 types is the most common preventive measure against blackleg. Burning the top layer of soil to eradicate the spores left on it is the best way to stop the spread of blackleg from sick cattle.
wiki
