Blackleg (disease)

Blackleg, black quarter, quarter ill (Latin: Gangraena emphysematosa) is an infectious bacterial disease of sheep and cattle, caused by Clostridium chauvoei bacteria. It is found all over the world. A symptom of blackleg is characteristic swellings which make a cracking sound under pressure. Blackleg vaccine gives immunity against it.

Causative Organism
Clostridium chauvoei and Clostridium feseri.

Vaccination and Prevention
The use of 7-type clostridial vaccination is the most common preventative measure taken against blackleg. Burning the upper layer of soil to eradicate left-over spores is the best way to stop the spread of blackleg from diseased cattle.