Evaluation of commercial (intermediate strain) vaccine against IBD in Nepal
1996
Bohara, K.B. (Animal Health Research Division, Tripureshor, Kathmandu (Nepal))
This study was conducted to evaluate the pathogenecity and immunosuppressive effects of three intermediate and one hot strain of Infectious Bursal Disease (IBD) vaccine. Sixteen days old broiler chickens were vaccinated with these vaccine. Three weeks post IBD vaccination, they were also vaccinated orally in water with NDV4HR vaccine. The pathogenecity was evaluated by observing clinically visible signs and lesions on body surfaces and bursa, typical for IBD infection. Immunosuppressive effects were evaluated by determining the response of IBD vaccinated birds to NDV vaccine. Bursal lesions and mild muscular lesions were noticed in all four vaccine groups but no externally visible clinical symptoms with mortality is recorded for non of the vaccine group. All group respond to NDV4HR vaccine with variable results.
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