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Articles by M. A. R. Howlider
Total Records ( 4 ) for M. A. R. Howlider
  M. S. Islam , M. A. R. Howlider , F. Kabir and J. Alam
  A total of 3000 eggs; 750 eggs from each breed namely Barred Plymouth Rock (BPR),White Leghorn (WLH), Rhode Island Red (RIR) and White Rock (WR) were collected in 3 batches following AI from individually caged hens and were hatched to compare hatching parameters among breeds. The different hatchability traits of hen of different breeds; BPR, WLH, RIR and WR were compared. Hatching egg weight had no significant (P>0.05) difference among 4 genotypes. Fertility was highest in WLH, intermediate in WR and lowest and similar in BPR and RIR (P<0.01) with differences of fertility among 3 batches (P<0.01). Breed had little effect on hatchability of fertile eggs (P>0.05), but it differed among batches (P<0.01). Hatchability on total eggs was highest in WLH, intermediate in BPR and WR and lowest in RIR (P<0.05) and having also differences among batches (P<0.01). No significant (P>0.05) difference in dead in germs (DG) and dead in shell (DS) were found attributable to genotype, but DG and DS differed significantly(P<0.01) among 3 batches. Breed and batch had little effect on normal chicks and abnormal chicks hatched (P>0.05). Chick weight at hatching was highest (P<0.05) and similar in BPR (38.95 g) and WLH (38.96 g), intermediate in RIR (38.50 g) and lowest in WR (38.13 g). Batch had little effect on chick weight. Percent chick weight was found highest (P<0.01) in BPR (67.21%), intermediate in RIR (65.96%) and lowest and similar in WLH (65.17%) and WR (65.46%) without significant (P>0.05) difference in batches. There were some correlations among different hatchability traits depending on genotype within breed. The correlations were more profound among WLH. It was clear that chick weight as percent of egg weight was not just a function of egg weight, but also genotype played an important role favouring the heavier breeds.
  M. H. Hossain , M. U. Ahammad and M. A. R. Howlider
  A total of 144 day old straight run starbro broiler chicks were fed ad libitum up to 42 days of age on 3 different iso-nitrogenous and iso-energetic diets formulated by replacing dietary fish meal (FM) partially to completely by broiler offal (BO). In 3 diets 0, 4 and 8% BO replaced equal amount of FM to compare growth performance, profitability and meat yield among 3 diets. At 42 day of age, live weight increased almost linearly with increasing levels of dietary BO (P<0.01). Feed consumption was also positively correlated with BO concentration in diet. Feed conversion also improved on increasing levels of dietary BO (P<0.01). But survivability had little relation with dietary BO. Profitability of broiler rearing increased at increasing concentration of BO in diet. Meat yield also increased as BO replaced the dietary FM. It was concluded that replacement of costly conventional dietary FM by unconventional BO could increase performance of broilers with increased profitability and meat yield.
  M. J. Alam , M. A. R. Howlider , M. A. H. Pramanik and M. A. Haque
  A total of 144 day-old straight run Arbor Acres broiler chicks were fed on 4 iso-nitrogenous and iso-energetic diets; starter control contained 22.1% CP and 2924 Kcal/kg ME and finisher control had 19.25% CP and 3005 Kcal/kg ME. In three test diets exogenous Alquerzim (1g/kg), Roxazyme-G (0.01g/kg) and Feedzyme (0.05g/kg) were supplemented to control diet to observe whether addition exogenous enzyme improves efficiency of broiler production. The growth rate, feed intake, feed conversion, dressing yield and profitability were increased by addition of exogenous enzymes. The addition of enzyme is effective to overcome antinutritive effect of NSP on broiler performances. Enzyme had no effect on survivability. Roxazyme-G and Feedzyme are more profitable than Alquerzim. Therefore, it may be concluded that exogenous enzyme may be used in broiler diet by proper selection of enzyme to get best result.
  T. Yeasmin , M. A. R. Howlider and M. U. Ahammad
  An experiment was conducted to assess the effect of introgressing autosomal recessive dwarf gene (adw) from Bangladeshi indigenous (deshi) dwarf (DD) chicken to Rhode Island Red (RIR), White Leghorn (WLH) and Fayoumi (FO) on body weight and egg production. Deshi normal (DN), DD, RIR, WLH and FO were used in crossings to produce 8 genotypes; RIR, WLH, FO, DN, DD, RIR x DD, WLH x DD and FO x DD. At 19 weeks of age, for separation of crossbreds into normal and dwarf on the basis of shank length, altogether gave 11 genetic groups; RIR, WLH, FO, DN, DD, RIR x DD normal, WLH x DD normal, FO x DD normal, RIR x DD dwarf, WLH x DD dwarf and FO x DD dwarf. At 19 weeks of age, 154 pullets; 14 from each genetic group were individually caged up to 42 weeks of age to compare egg production performance. Introgression of adw gene significantly reduced mature body weight and feed intake and adw pullets utilized feed more efficiently into egg mass in comparison with their normal size counterparts. Conservation and improvement of deshi adw chicken is suggested for their future use in breeding for egg production.
 
 
 
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