ANALYSIS OF PREVALENCE OF INFECTIOUS BURSAL DISEASE IN BROILER FLOCKS IN DINAJPUR

Rahman, M.S., Islam, M.S., Rahman, M.T., Parvez, N.H, Rahman, M.M. 2010. Analysis of prevalence of infectious Bursal disease in broiler flocks in Dinajpur. Int. J. Sustain. Crop Prod. 5(1)15-18. The study was conducted in fourty broiler farms of Dinajpur district for the determination of infectious bursal disease (IBD) during the period of 20 th November to 30 th December 2009. On the basis of history and postmortem pathological lesions, the prevalence of IBD was 7.13%, 7.19%, 5.97% and 6.46% in Kotwali, Kaharol, Birgonj and Birol thanas respectively. The mortility was 3.73% in Kotwali, 3.39% in Kaharol, 4.33% in Birgonj, 4.39% in Birol thanas. The highest prevalence was found in Kaharol and lowest was found in Birgonj. The highest mortality was found in Birol thana. The main pathological lesions observed in this study were hemorrhages on thigh and brest muscles; inflamed, edematous, hyperemic and atrophied with haemorrhagic bursa of fabricious and in some cases kidneys were found swollen. The study also showed that the broilers of four weeks of old were highly susceptible to IBD (55%) whereas in third week 12.5% and in fifth week 32.5% and the broilers of two weeks of age were not affected with IBD.