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| Articles
by
M. S. K. Sarker |
Total Records (
2 ) for
M. S. K. Sarker |
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J. Alam
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M. M. Rahman
,
B. K. Sil
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M. S. R. Khan
,
Giasuddin
and
M. S. K. Sarker
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Infectious bursal disease is one of the most important viral disease of poultry usually affects young chickens of 3-6 weeks. Hygienic management and proper vaccination are main way of control of this disease. But maternal antibody affects vaccination with live vaccine. To determine the effect of maternally derived antibody on live vaccine, the study was conducted. A total of 100 day old chicks (50 from vaccinated parent stock and 50 from non-vaccinated parent stock) were used in this study. A preset vaccination schedule was followed for chicken and blood samples were collected to find out the actual effect. It is observed that day old chicks contain high level (6294.14±24.95) of maternally derived antibody which gradually decline below positive level within 15-20 days (390.45 ±19.42) and half-life is about 5 days. Vaccination of chicken with high level of maternally derived antibody interferes with the vaccine virus results no immune response but revaccination provokes immune response. Better immune response is found in chickens vaccinated at day 21 and boostered at day 28. But there may be chance of infection because maternal antibody declined below positive level within 15-20 days. Chickens from non-vaccinated parent stock shows good immune response from first time that is from primary vaccination at day 7 and boosting at day 14. |
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M. S. K. Sarker
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M. A. Islam
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S. U. Ahmed
and
J. Alam
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A total of 100 ISA-Vedette, 100 Arbor Acres and 1000 Hybro fast growing broiler
chicks were divided in to 5 replications having 20 chicks in each, reared up to 42
days of age to select the suitable broiler strain of better profitability and meat yield
traits. A total of 30 representative male and female broiler from each breed
slaughtered at 42 days of age to investigate the dressing yield. ISA-Vedette was
the highest in respect of body weight (1552.25 m/b) and feed intake (3105 m/b)
followed by Hybro (1401.60 and 2764 m/b) and Arbor Acres (1372.48 and 2749
m/b) respectively. Production cost and profitability of ISA-Vedette, Hybro and
Arbor Acres were 44.23 and 25.77, 50.01 and 20.00 and 50.41 and 19.49 Tk/kg
live bird respectively. The strains were significantly for body weight, blood
weight and giblet weight. Despite there was no significant difference among the
strains, ISA-Vedette was the superior for dressing yield to the other strains. That
ISA-Vedette is the most suitable strain in tropical environment in comparison
with the other strains (Hybro and Arbor Acres). |
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