Braxy is an inflammatory disease in the abomasal lining of sheep caused by the bacterium Clostridium septicum (aka Bacillus septicus), followed by rapid death.
Braxy is often brought on by a change from succulent food to dry (or icy) food. It is usually seen in young sheep, in particular those not protected with a Clostridial vaccine.
The mutton affected with this disease can also be referred to as braxy.
A vaccine against braxy was developed by Prof John Russell Greig at the Moredun Research Institute in Scotland.
References
Braxy Wikipedia(Text) CC BY-SA