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Articles by G. C. Sil
Total Records ( 2 ) for G. C. Sil
  G. C. Sil , P. M. Das , M. R. Islam and M. M. Rahman
  To find out the diseases occurring in cockerels and its relationship with the management of cockerel`s farm an investigation was carried out from day-old chicks up to marketing at three different cockerel farms in Mymensingh district. In the farm 1, IBD appeared at the age of 31-35 day, the morbidity being 100% and mortality 28.57%. Vaccination at high environmental temperature and use of no fumigation, might be the managemental factors contributed in the causation of the malady. In the farm 2, the morbidity and mortality of yolk sac infection, hypovitaminosis-E, coccidiosis and miscellaneous condition were recorded 3.6 and 2.4%; 4.4 and 2.0%; 8.4 and 0.8%; 0.4 and 0.4%, respectively. However, litter management problem and problem in maintenance of optimum temperature in the shed might be related to these maladies. In the farm 3, the morbidity and mortality rates of the diagnosed diseases like IBD and hypovitaminosis E were 8.6 and 1.4%; 1.2 and 0.4%, respectively. The proportionate mortality of cockerels in these farms were 81.6% for IBD, 8.04% for hypovitaminosis E, 6.89% for yolk sac infection, 2.29% for coccidiosis and 1.14% for miscellaneous condition. IBD occurred in age group of >2-8 weeks, hypovitaminosis E in 0-2 and >2-8 weeks group, yolk sac infection in 0-2 weeks, coccidiosis in >8-20 weeks and the miscellaneous condition in 0-2 weeks group. The findings indicate that IBD is the major disease problem in cockerel farming in Mymensingh.
  M. M. Rahman , A. S. M. Bari , M. Giasuddin , M. R. Islam , J. Alam , G. C. Sil and M. M. Rahman
  An attempt has been undertaken to evaluate the humoral immunity against Newcastle disease in vaccinated chickens. Two different vaccination schedules were followed in 4000 Bovans White chickens (2000 in each treatment) with the history of ND vaccination in parent stock. The mean HI antibody titres of control groups of Treatment-1 and Treatment-2 revealed day-1 (285.51 and 289.43), day-5 (145.74 and 143.78), day-10 (73.58 and 71.47), day-15 (34.44 and 34.52) and day-20 (18.65 and 17.14) respectively. Birds of treatment-1 were vaccinated at 10 and 24 days old with live ND clone-30 vaccine and at 31 (half dose) and 120 (full dose) days old with oil adjuvant inactivated vaccine. Birds of treatment-2 were vaccinated at 10, 24 and 60 days old with live ND clone-30 vaccine and at 120 days old with oil adjuvant inactivated vaccine (full dose). The mean HI antibody titres for vaccinated groups of Treatment-1 and Treatment-2 revealed at day-10 (69.71 and 70.39), day-24 (19.73 and 24.34), day-31 (57.85 and 53.72), day-60 (251.52 and 76.34), day-120 (50.30 and 26.28) and day-150 (442.71 and 371.80) respectively. Vaccination program used in Treatment-1 gave better humoral immune response than in Treatment-2.
 
 
 
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