Evaluation of Specific Antibody Response in Backyard Chickens to Infectious Bursal Disease Live Vaccine
Infectious Bursal Disease (IBD) is one of the oldest and widely known poultry diseases all over the world. It is caused by IBD virus of Avibirnavirus genus of family Birnaviridae family. IBD has great economical impact on backyard poultry world as it causes high weakness and mortality. The objective of present study was to evaluate the antibody response in village chickens in India after vaccinating them with IBD live vaccine. Serum was collected at regular intervals from chickens up to 112 days after vaccination. Antibodies against IBD virus were measured using ELISA method. It was observed that the vaccines with both intermediate and intermediate invasive strain caused good immune response in the birds. Serum antibody level was found significantly high in 28 days blood collection, which decreased gradually up to 112 days. It was also observed that Intermediate invasive strain produced higher amount of antibodies than intermediate strain of the vaccine. Furthermore, it is also suggested that good diet and biosecurity measures in backyard chickens and proper vaccination program can benefit the local farmers of Asian countries.
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