Infectious bursal disease virus infection attempts in turkeys and Coturnix quail.

Attempts failed to infect Coturnix quail with infectious bursal disease (IBD) virus by exposure at 7, 14, 21, and 31 days old. There were no clinical signs or gross and microscopic changes in the bursa of Fabricius, and serologic tests and virus isolation attempts from cloacal swabs were negative. Turkeys of two breeds exposed to IBD virus at 6 or 8 weeks old showed no clinical signs or lesions in the bursa of Fabricius, and the virus could not be isolated from cloacal swabs. They did respond serologically, however, by developing both precipitin and virus-neutralizing antibodies.