Zaheer Ahmad
Role Of Maternal Antibodies In Protection Against Infectious Bursal Disease (Ibd) In Commercial Broilers - 1992
In this study, the decay rate of maternal antibodies to infectious bursal disease virus (IBDV) protective efficacy of maternal antibodies to experimental IBDV challenge and the protective efficacy of a live IBD virus vaccine (Bursine 11) to I8DV experimental challenge were studied. Enzyme Linked Immunosorbent 1ssay (ELISP) was standardized and performed to analyze the serum samples.
The level of maternal antibodies to (IBDV) was found to be positive till the fourth week of age. The line of best fit to this decay rate within the study period was found to be Y=0.43-O.O53 (week) and has the coefficient of determi- nation 0.904. The positive level of maternal antibodies after second week of age were found insufficient to protect broiler chicks against the IBDV challenge. Maximum mortality (207.) was observed after experimental IBDV challenge at 35 days of age in broiler chicks. This suggested that the offsprings need to be vaccinated with the live IBD virus vaccine before that age.
The maternal antibodies were demonstrated to interfere with the live vaccination.
vaccination. Live virus at 14 days of age were found to be protective and a booster with the same vaccine in the fifth week of age prevented the chicks from infection.
Department of Microbiology
0250,T
Role Of Maternal Antibodies In Protection Against Infectious Bursal Disease (Ibd) In Commercial Broilers - 1992
In this study, the decay rate of maternal antibodies to infectious bursal disease virus (IBDV) protective efficacy of maternal antibodies to experimental IBDV challenge and the protective efficacy of a live IBD virus vaccine (Bursine 11) to I8DV experimental challenge were studied. Enzyme Linked Immunosorbent 1ssay (ELISP) was standardized and performed to analyze the serum samples.
The level of maternal antibodies to (IBDV) was found to be positive till the fourth week of age. The line of best fit to this decay rate within the study period was found to be Y=0.43-O.O53 (week) and has the coefficient of determi- nation 0.904. The positive level of maternal antibodies after second week of age were found insufficient to protect broiler chicks against the IBDV challenge. Maximum mortality (207.) was observed after experimental IBDV challenge at 35 days of age in broiler chicks. This suggested that the offsprings need to be vaccinated with the live IBD virus vaccine before that age.
The maternal antibodies were demonstrated to interfere with the live vaccination.
vaccination. Live virus at 14 days of age were found to be protective and a booster with the same vaccine in the fifth week of age prevented the chicks from infection.
Department of Microbiology
0250,T