Cloacitis, commonly referred to as vent gleet may also be called pasting or nasty chicken butt. Regardless it is the inflammation of the chicken’s cloaca. Vent gleet isn’t a specific disease but more of a gastrointestinal condition that can be caused by a number of different reasons, including many types of organisms such as fungi, protozoa, parasites, yeast, and bacteria. Stress causes an increase in pH levels which predisposes chickens to developing infection in the cloaca and nearby organs including the rectum and uterus.
In the Backyard Poultry article here, Kenny Coogan shares insights from Donna Kelly, DVM adding to the information from the Poultry DVM above. Kelly addresses the misinformation often found in social media and internet searches warning poultry keepers of medications not approved in the U.S. She also identifies pros and cons of home remedies.
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Providing proper nutrition and clean, sanitized water is the best way to prevent chicken gleet. Dry roosting conditions are also important.”