The Role of the Infectious Bursal Agent and Several Avian Adenoviruses in the Hemorrhagic-Aplastic-Anemia Syndrome and Gangrenous Dermatitis

Abstract

The effect that breeder-flock immune status regarding the infectious bursal agent (IBA) and 2 avian adenoviruses (DPI-1 and DPI-2) has on the susceptibility of their commercially reared Delmarva broiler progeny to the hemorrhagic-aplastic-anemia syndrome and concurrent gangrenous dermatitis was determined. Lack of immunity to the IBA in breeder flocks was related to an increased susceptibility of progeny to anemia and dermatitis. Breeder-flock immunity to the 2 adenoviruses could not be related to the resistance or susceptibility of their progeny to the hemorrhagic-aplastic-anemia syndrome and gangrenous dermatitis.