You searched for: “gangrenous cellulitis
gangrenous cellulitis, gangrenous dermatitis
Gangrenous necrosis of the skin of the thorax and thighs of chickens of one to four months of age caused by Clostridium septicum and other clostridia.

Clostridia refers to any of various rod-shaped, spore-forming, chiefly anaerobic bacteria of the genus Clostridium; such as, the nitrogen-fixing bacteria found in soil and those causing botulism and tetanus.

Most affected birds die and the mortality rate in a flock may be as high as 60%. Also known as necrotic dermatitis.