Abstract
The present study was conducted to determine the immune response induced in indigenous chicken produced against BAU-FC and DLS-FC vaccines with their efficacy study against Pasteurella multocida. A total of forty (40) chickens were selected and divided into Group A (15), Group B (15) and Group C (10). Group A and B were vaccinated with BAU-FCV and DLS-FCV, respectively at the dose rate of 0.5 ml through SC at six weeks of age followed by boostering at 10 weeks of age while Group C was kept as unvaccinated control. Sera samples were collected after primary and booster vaccination and antibody titre was determined by Passive hemagglutination (PHA) test. The mean PHA titres recorded at 4 weeks after primary vaccination was 51.20 ± 7.84 in birds of group A and 38.40 ± 6.40 in birds of Group B. After booster vaccination, mean PHA titer was found 140.80 ± 31.35 at 16 weeks of age in case of BAU-FC vaccinated group and 115.20 ± 12.80 in case of DLS-FC vaccinated group. The mean PHA titer was 204.80 ± 31.35 and 179.20 ± 31.35 at 19 weeks of age in birds of BAU-FC and DLS-FC vaccinated group, respectively. Birds of all groups were challenged with virulent P. multocida at 17 weeks of age. It was observed that vaccinated chickens showed maximal resistance (100%) following challenge with virulent whereas unvaccinated control birds failed to resist the challenge infection. It can be assumed from the findings of present research work that both BAU-FCV and DLS-FCV are able to protect indigenous chicken from the outbreak of avian pasteurellosis and BAU-FV vaccine showed relatively higher immuno-protective titre than that of DLS-FC vaccine.Res. Agric., Livest. Fish.5(2): 193-199, August 2018
Highlights
In Bangladesh, poultry keeping is an integral part of the rural farming system that provides family income and creates employment opportunity for rural people small, marginal and landless poor farmers (Khan et al, 1999)
The present study was conducted to determine the immunoprotective potential and comparative efficacy of BAU-Fowl cholera (FC) and DLS-FC vaccines in indigenous chicken reared in villages
Vaccines Two types of vaccine were used to immunize the chicken namely, BAU-Fowl cholera vaccine produced at Livestock and Poultry Vaccine Research and Production Center (LPVRPC), Bangladesh Agricultural University, Mymensingh and DLS-Fowl cholera vaccine produced at Livestock Research Institute (LRI), Mohakhali, Dhaka
Summary
In Bangladesh, poultry keeping is an integral part of the rural farming system that provides family income and creates employment opportunity for rural people small, marginal and landless poor farmers (Khan et al, 1999). As indigenous birds are relatively resistant compare to commercial chicken and no capital is invested, the women in villages mainly prefer to rear them. These are a source of earning money for the poor people. It is contagious bacterial diseases that affects domestic and wild avian species including chicken and hamper the profitable poultry production (OIE, 2008). It usually appears as a septicemic disease associated with high morbidity and mortality. The present study was conducted to determine the immunoprotective potential and comparative efficacy of BAU-FC and DLS-FC vaccines in indigenous chicken reared in villages
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