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Articles by A. Ashraf
Total Records ( 3 ) for A. Ashraf
  M.M.I. Chowdhury , A. Ashraf , S.P. Mondal , Newaz Md. Abu Al Moin Mondol and M.M. Hasan
  This study was conducted in Regional Duck Breeding Farm, Daulatpur, Khulna, Bangladesh with a view to know the seasonal effect on the hatchability of duck eggs. The number of eggs set in the incubator and the number of eggs hatched was used to determine the hatchability percentage. Duck breeding farm practiced artificial incubation for hatching eggs. Data were collected from the record registers of the farm covering the year 1995 to 2002 and 5199928 eggs were set in incubator from 2789000 ducklings were hatched during the period. Data were analyzed using MSTAT-C Statistical Package Program. The result revealed that hatchability of duck eggs were highest in January (59.54%) and lowest in July (48.27%) in case of month wise hatchability whereas winter (57.676%) shows the highest followed by summer (54.135%) and monsoon or rainy season (49.134%). Least-square Analysis of Variance showed that both season and individual months had significant effects on the hatchability of duck eggs. Therefore, it can be concluded that both individual month and season influenced the hatchability of duck eggs.
  B. Sarkar , S.S. Islam , Z.H. Khandaker , S.M.E. Ershad , A. Ashraf and M.H. Rashid
  The study was conducted in the Department of Animal Nutrition, Bangladesh Agricultural University with an aim to assess the degradability of crude protein (CP) and crude fibre (CF) of Jumbo grass grown in four different doses of nitrogen (N) fertilizer. The four doses of N fertilizer were 0, 50, 100 and 150 kg urea ha 1 in a Completely Randomized Design having four replications in each treatment. The unit plot size of each replicate was 4x4 m2. The fodder was harvested at the pre flowering stage at 68 days after sowing for first cutting. Four adult male cattle of about 170 kg live weight and about four years of age, fitted with permanent rumen canula, were used for the experiment. Approximately 3 g of each ground sample was placed in nylon bag separately for ruminal incubation. The size of the bag was 7x5 cm2 with pore size of 60 μ m. The bags with samples were incubated for the period of 2, 6, 12, 24, 48 and 72 h in the rumen. The bags with contents were removed from rumen and dried in an oven at 100 ° C for complete removal of moisture. The residues were analyzed for crude protein (CP) and crude fibre (CF) estimation. The disappearance values were obtained by difference in weight of the sample before and after incubation. From the percentage of disappearance data, the degradation characteristics were calculated by using the NAWAY computer programme. The results of the study showed that the effective degradability of crude protein (EDCP) of the fodder increased by increasing the N fertilizer doses while effective degradability of crude fibre (EDCF) remain unchanged. Due to fertilization the values of potential degradable fractions ‘(a+b) ’ decreases for CF and this value remain unchanged for CP. Rate constant (c value) was increased due to N fertilizer for both CP and CF.
  B. Sarkar , S.S. Islam , Z.H. Khandaker , S.M.E. Ershad , A. Ashraf and M.I. Hossain
  The experiment was carried out at the Department of Animal Nutrition, Bangladesh Agricultural University, Mymensingh, to study the effects of different doses of nitrogen (N) fertilizer on yields and chemical composition of Zamboo grass. The fodder was cultivated at 4 levels of N fertilizer viz., 0, 50, 100 and 150 kg urea ha-1 in a completely randomized design having four replications in each treatment. The unit plot size of each replicate was 4×4 m. The fodder was harvested at the pre flowering stage (68 days after sowing) for first cutting and again 40 days after first cutting. The proximate components of the fodder for each plot were determined at the laboratory, Department of Animal Nutrition. The results of the study showed that the total yields (t ha-1) of Zamboo grass on fresh basis were 11.08, 15.63, 22.35 and 26.72 in the first cuttings and 7.94, 12.24, 16.65 and 22.41 in the second cutting using 0, 50, 100 and 150 kg urea ha-1, respectively. The total dry matter (DM) yield of fodder for first cutting at the treatment levels of 0, 50, 100 and 150 kg urea ha-1 were found to be 1.85, 2.75, 3.66 and 4.60 t ha-1 and those in second cutting were 0.67, 2.13, 3.08 and 3.97 t ha-1, respectively. Total yields of fodder green as well as DM basis in both cutting progressively and significantly increased with the increasing levels of N fertilizer doses. Similarly crude protein (CP), crude fiber (CF) and ether extract (EE) yields (t ha-1) were increased with increasing fertilizer doses. The green fodder as well as DM yields and percent of different proximate components of each treatment were higher in the first cutting than that of the second cutting except CF. The DM percent of the fodder was almost similar for different fertilizer treatments in both cutting. Among the various proximate components, CP, CF and EE percent increased by increasing the N fertilizer doses while ash percentage decreased.
 
 
 
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