1. Firmicutes: Clostridium chauvoei
B. Rush F2013
Modified byh DYH
Firmicutes: Clostridium chauvoei
Gram positive, anaerobic, spindle shaped rod bacterium that is causative agent of the disease “Blackleg.”
Form chains of 2-3 bacteria
Infects cattle, sheep, and pigs. Mortality rates are high. Preventative vaccine is most effective measure.
Spore forming!
Bacterium can persist
in the environment for
decades, and infect
animals grazing in
pastures, but does not
spread from animal to
animal.

2. Firmicutes: Clostridium chauvoei
B. Rush F2013
Modified byh DYH
Firmicutes: Clostridium chauvoei
Genome estimated to be 2,825,126 BP long.
C. chauvoei toxin A, (CctA,) exotoxin protein is the major virulence factor; creates unregulated pores in membranes of target cells, and causes hemorrhaging symptoms for which the disease is named. Other factors include Dnase, (β-toxin,) and Hyaluranase, (γ-toxin.)
Kills in just a few hours. Young healthy animals are at the greatest risk!
Can be treated with heavy antibiotics. Deceased must be burned, or buried and ground covered in lime.