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Articles by S.D. Chowdhury
Total Records ( 2 ) for S.D. Chowdhury
  B. Dey , S.D. Chowdhury and K.D. Ahmed
  An experiment was carried out with laying hens to investigate the effect of feeding garlic at low dietary concentrations on cholesterol metabolism and productivity of laying hens. Sixty, 57 weeks old laying hens belonging to Shaver 579 strain was fed garlic at different dietary levels for 10 weeks. Five dietary treatments, each of four replications, containing either 0, 5, 15, 25 or 35 g garlic per kg were compared. The birds were reared in a pyramid-type laying cage during the experimental period. Blood and eggs were collected three times for the determination of cholesterol concentration in serum and yolk. Laying performance in terms of body weight gain, egg weight, total egg mass and FCR were recorded. Use of garlic at increasing concentration showed negative linear effects (p<0.01) on total lipids, yolk cholesterol and serum cholesterol. Analysis of performance data showed no significance differences from the control group except a linear increase in total egg mass and hen day egg production (p<0.01). It may be concluded that garlic can be considered as a hypocholesterolemic dietary feed additive in older hens but further feeding trials with dietary inclusion levels between 25 and 35 g kg-1 would be useful to establish these results.
  M. E. Hossain , S.D. Chowdhury , S.C. Das , H. Khatun and L. Asad
  Hatching performance of eggs of two broiler parent stocks was investigated in three different seasons of the year under Bangladesh conditions. Two strains of broiler breeder flocks were reared separately on floor from 22 to 48 weeks of age and eggs laid by these birds during spring, summer and monsoon were considered for this study. Each season was treated as treatment with 4 sets, each of 50 eggs as replicates within a treatment. One thousand two hundred hatching eggs (600 from Starbro and 600 from ISA MPK) were incubated in a James-way forced-draft electric incubator and the required records were kept during incubation and following taking out of hatches. The results of the experiment showed that hatching performance of eggs from Starbro was significantly better in spring than those observed during summer and monsoon. The hatchability results from ISA MPK also showed trends similar to Starbro but data did not differ significantly among seasons of the year. It may be concluded from the study that it is better to consider hatching of large number of eggs during spring if the broiler parents are reared in open-sided house.
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