Ulcerative enteritis (UE) is an inflammation of the digestive tract, caused by the Clostridium colinum
bacterium. The disease has been found primarily in game birds (quail, pheasants, grouses). Chickens and turkeys are usually affected by a similar disease called Necrotic enteritis
. Both diseases tend to occur in birds under stress and/or suffering from a concurrent infection such as coccidiosis or infectious bursal disease.
Birds infected with UE will shed infectious spores in their feces. UE is transmitted between birds by ingestion of litter, soil, feed or water that is contaminated with feces containing C. colinum