Abstract:
The study is focusedthe gross lesions and pathological changes, the mortality rate caused by IBD virus and serological profile during infection caused by infectious bursal disease IBD virus. The main pathological changes are oedema, in Bursa and haemorrhages in different organs.
The Mortality of IBD infected layer flocks were evaluated and recorded, the authors found that the total mortality in the infected flock was 22494 which contributes about 28% of the flock.