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Articles by M. J. Khan
Total Records ( 3 ) for M. J. Khan
  Begum N , M. J. Khan and K.M.S. Islam
  The experiment was conducted for a period of 90 days with 9 local growing male calves of 18-24 months of age and average live weight 68 kg to determine the effect of feeding complete ration with road side grass, maize (Zea mays) silage and water hyacinth (Eichhornia crassipes) on growth, digestibility of different nutrients, total digestible nutrients and feed efficiency. The animals were randomly divided into three groups, having three bull calves in each. The calves of group A were fed 40% rice straw, 60% road side grass and concentrate mixture. The calves of group B were fed 40% rice straw, 60% maize silage and concentrate mixture and the calves of group C were fed 40% rice straw, 60% water hyacinth and concentrate mixture. The concentrate mixture contained 27% wheat bran, 40% rice polish, 55 fish meal, 2% bone meal and 1% common salt. The concentrate mixture was provided in quantities to satisfy 1/3rd of DM requirement. The animals of maize silage group B showed best P<0.01) performance in weight gain (0.152 kg/d) followed by C (0.115 kg/d) and A (0.107 kg/d). Dry matter intake per day in group A, B and C were 2.31, 2.42 and 2.29 kg respectively. The amount of feed required per kg body weight gain (P<0.01) were lower in maize silage group B (16.61) followed by C (19.92) and A (21.74). A higher trend of digestibility of nutrients were observed in maize silage feeding group (B). So, the maize silage in combination with straw and concentrate mixture can be fed to growing animals for better performances. Fresh water hyacinth leaves can also be allowed to calves in combination with straw and concentrate, without any adverse effect on growth of animals.
  M. E. Hossain , M. Shahjalal , M. J. Khan and A. A. Bhuiyan
  Six female sheep were used in a 90 day trial to study the effect of dietary energy supplementation to grazing on feed intake, growth and reproductive performance of female sheep. Animals were blocked according to live weight and blocked groups were assigned at random into two feeding regimes i.e. low and high energy (10.02 and 11.98 MJ ME/kg DM). Each sheep received 250 grams of supplemental diet in addition to grazing. Results showed that, feeding of sheep with increased levels of dietary energy supplementation did not have significant (P>0.05) differences for daily average dry matter and crude protein intake. However, daily average ME intake significantly (P<0.05) increased in a linear fashion and the mean values were 4.67 and 5.76 MJ/d for low and high energy supplemented diets respectively. The digestibility of dry matter (DM), organic matter (OM) and crude fibre (CF) significantly (P<0.05) increased as the level energy supplementation was increased. However, the digestibility of crude protein (CP), nitrogen free extract (NFE) and ether extract (EE) was similar (P>0.05) for all dietary energy regimes. Average daily live weight gain significantly (p<0.05) increased from 34.8 to 48.5 g/d as the level of supplement energy increased from 10.02 to 11.98 MJ ME/Kg DM. The birth weight of lambs was highest i.e. 0.71 kg fed high energy diet and lowest i.e. 0.50 kg fed low energy diet. These results indicate that, increasing levels of supplemental energy improve growth and reproductive performance of female sheep. Therefore, supplementation of higher level of dietary energy (11.98 MJ ME/kg DM) may be suggested for optimizing growth and reproductive performance of female sheep under grazing condition.
  M. E. Hossain , M. Shahjalal , M. J. Khan and M. S. Hasanat
  Twelve female goats were used in a 90 day trial to study the effects of dietary energy supplementation to grazing on feed intake, growth and reproductive performance of female goats. Animals were blocked according to live weight and blocked groups were assigned at random into three feeding regimes i.e. low, medium and high energy (10.02, 11.06 and 11.98 MJ ME/kg DM). Each goat received 250 grams of supplemental diet in addition to grazing. Results showed that, daily average dry matter and crude protein intake significantly (P<0.05) decreased from 406.1 to 362.4 g/d and 47.7 to 40.4 g/d when supplemental energy level increased from 10.02 to 11.98 MJ ME/kg DM. Energy supplementation had positive effect on energy intake. ME intake significantly (P<0.05) increased from 3.75 to 4.25 MJ/d as well as the digestibility of OM and CF significantly (P<0.05) increased from 62.25 to 73.68% and 43.80 to 53.21% respectively as the level of supplemental energy increased from 10.02 to 11.98 MJ ME/kg DM. However, the digestibility of DM, CP, NFE and EE was similar (P>0.05) irrespective of level of energy supplementation. Average daily live weight gain increased (P>0.05) in a linear fashion and the mean values were 37.7, 44.4 and 52.9 g/d for low, medium and high energy supplemented diets respectively. Birth weight of kids was highest i.e. 0.75 kg fed high energy diet and lowest i.e. 0.55 kg fed low energy diet. These results indicate that, increasing levels of supplemental energy improved live weight gain and reproductive performance of female goats. Therefore, supplementation of higher level of dietary energy (11.98 MJ ME/kg DM) may be suggested for optimizing growth and reproductive performance of female goats under grazing condition.
 
 
 
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