Effect of the Infectious Bursal Disease Vaccine on the Aero-Anaerobic Enteric Bacterial Flora of Chickens

Abstract

The enteric bacterial flora of birds was examined after vaccination with the infectious bursal disease (IBD) vaccine via the ocular and oral routes. Throughout the test period, the bacterial loads were higher in the test groups than in the control (p < 0.05). However, significant differences between the two test groups only occurred in the first three weeks postvaccination. The bacteria isolates included Salmonella sp., Edwardsiella sp., Escherichia sp. and Klebsiella sp. in the test and control groups.