Green Global
Foundation   Journal
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DETECTION OF INFECTIOUS BURSAL DISEASE VIRUS IN DIFFERENT SMALL SCALE COMMERCIAL BROILERS (Pages : 16 - 20)

The experiment was conducted for the determination of infectious bursal disease virus from broiler chicken in Dinajpur during July-December 2013. A total number of 8 different small scale commercial broiler farms in Dinajpur were suspected to be infected with IBDV were observed. The size of the affected flocks was 500 to 1500 birds. Identification of IBDV was done by Clinico-Pathological investigation and determination of serum antibody titer of birds by indirect ELISA test. Morbidity of the flocks were about 0 to 100% and mortality ranged from 3% to 40%. The chicks aged between 21 to 32 days were affected. Depression, anorexia, ruffled feathers, diarrhoea, extreme weakness and death were the common clinical manifestation. At necropsy the major gross lesions included oedematous swelling or atrophy of the bursa of Fabricius, occasionally with petechial and ecchymotic haemorrhage were often observed in leg and breast muscle. The antibody titers of the suspected broilers were determined by indirect ELISA test. At the different age birds it shows that within eight flocks, four flocks show positive seroconversion and only one flock shows 100% seropositive and rest of flocks shows seronegative with very low antibody titer resulting they might be infected any time with IBDV due to lack of protective level of serum antibody.Download