Fluorescent antibody test in diagnosis of ulcerative enteritis.

A direct fluorescent antibody (FA) test to demonstrate the presence of Clostridium colinum in cryostat sections of liver and intestine from chickens with ulcerative enteritis ("quail disease") was investigated. Both field cases and experimentally infected birds were studied by FA, bacterial isolation of the clostridium, and histopathology. The FA test proved highly specific for Cl. colinum. It was concluded that the described direct FA procedure offers simplicity and speed over bacterial isolation procedures for etiologic diagnosis of ulcerative enteritis.