Common stock and thin, scrubby, or stunted calves seldom become in- fected. Sheep, goats, and hogs may contract the disease occasionally. Man, horses, dogs, cats, and fowl appear to be immune. Guinea pigs, which are used in laboratory diagnostic tests, are highly susceptible.

What animals does blackleg affect?

Blackleg, black quarter, quarter evil, or quarter ill (Latin: gangraena emphysematosa) is an infectious bacterial disease most commonly caused by Clostridium chauvoei, a Gram-positive bacterial species. It is seen in livestock all over the world, usually affecting cattle, sheep, and goats.

What are symptoms of blackleg?

Lameness, depression, loss of appetite and a hot painful swelling on a limb which crackles when pressed may indicate blackleg. Later, the skin over the swelling will become cold, dry and leathery. In areas where blackleg is a known problem, it should be suspected in cases of sudden death.