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Articles by B.C. Das
Total Records ( 3 ) for B.C. Das
  M.M. Bhuiyan , M.H. Khan , M.A.H. Khan , B.C. Das , N.S. Lucky and M.B. Uddin
  The experiment was conducted with 40 Pekin, 40 Muscovy and 40 Deshi White day-old as hatched broiler ducklings under farmers condition to investigate the comparative performance of three breeds of ducks under farmer`s management up to the 09 weeks of age. The final live weight in Pekin, Muscovy and Deshi White were 1763.0, 1225.0 and 1208.0 g/ducks respectively (P < 0.05 ). The total feed consumption up to the brooding period in three breeds were 2047.00, 1652.06 and 1430.05 g/ducklings respectively (P < 0.05) and the respective feed conversion ratios were 2.40, 2.91 and 3.05. Mortality was non- significant (P>0.05) among the breeds of ducks. The highest (70%) dressing yield was found from Pekin and the lowest (65%) from Deshi White. The highest production cost was found in Pekin and the lowest in Deshi White. The highest gross margin and BCR (Tk.34.93/duck and 1.66 respectively) were obtained from Pekin and the lowest (Tk. 11.45/duck and 1.23 respectively) from Deshi White. From the results it may be concluded that exotic breeds /improved breeds of broiler ducks rearing is possible at FSRD site, Sylhet and farmers can be benefited within short time. The breed of Pekin ducks is superior over Muscovy and Deshi White.
  K.N. Shahjahan Karim , B.C. Das and M. Khalequzzaman
  Population of A. gossypii Glover on Solanum melongena L. was studied. Monthly data were collected from 5 plants along with their natural enemies. Mean monthly temperature, relative humidity, dew point, rainfall, soil temperature and photoperiod were also collected. Correlation coefficient was calculated. Aphid population started growing from August, became highest in January and vanished in April. Multiple correlation coefficient was also highly significant.
  S. Habib , B.C. Das , M.N. Islam , M.K. Hossain and M.F. Ahmed
  The effect of various tranquilizer and sedative agents was studied in sheep. The respiration rates, pulse rates and rectal temperature in sheep reduced significantly (P<0.01) with all the tranquilizing and sedative agents except promethazine hydrochloride. The chlorpromazine hydrochloride produced longest onset and shortest duration of sedation and recovery period, while xylazine hydrochloride produced shortest onset and longest duration of sedation and recovery period. Xylazine hydrochloride and diazepam decreased the rumen motility significantly (P<0.01) whereas chlorpromazine hydrochloride and promethazine hydrochloride decreased insignificantly. Hemoglobin (Hb) and packed cell volume decreased significantly (P<0.01) compared with the pre-sedative control values with all the above tranquilizers and sedatives except promethazine hydrochloride. Xylazine hydrochloride reduced the PCV in a marginally significant (P<0.05) level. Promethazine hydrochloride significantly (P<0.01) increased the Hb but PCV insignificantly. Xylazine hydrochloride and diazepam produced good sedation in sheep but chlorpromazine hydrochloride produced moderate sedation whereas promethazine hydrochloride only tranquilizes the sheep.
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