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Articles by H. Aliarabi
Total Records ( 3 ) for H. Aliarabi
  A.A. Saki , F. Mirzaaghatabar , P. Zamani and H. Aliarabi
  The present study was conducted to investigate the effect of various levels of methionine and metabolisable energy on carcass characteristics and visceral organs of broiler chickens. A total of 400 broiler chickens (Lohman) were allocated to a factorial 2x2 in completely random design with 4 replicates (25 birds in each). Levels of methionine were 1.2 and 0.45% which adjusted to 2800 and 3200 kcal kg-1 Metabolisable Energy (ME) in starters and 0.9 and 0.33% to 2800 and 3200 kcal kg-1 ME in grower periods, respectively. On 21st and 42nd days of age two birds were selected and after slaughter carcass and visceral organs characteristics were measured. The mentioned parameters were differently affected by all treatments. Moreover, the highest carcass weights percentage was obtained at 42nd days of age in low levels of methionine (p<0.05). Significant increases of breast were observed in chickens fed by low levels of methionine at 21st days of age (p<0.05). There were no significant differences between neck and backside weights at 21st days of age (p<0.05). All treatments caused significant differences in wing weights at 21st days of age (p<0.05). Significant increases in proventriculus were observed in 21st days of age (p>0.05). Also, significant changes were found in liver and heart weights at 21st and 42nd days of age in at this case (p>0.05). The results of current study have shown that various metabolizable energy and methionine interaction reflected in external (Carcass trait) and internal (Visceral organs) trait.
  M.M. Tabatabaie , H. Aliarabi , A.A. Saki , A. Ahmadi and S.A. Hosseini Siyar
  Eighty layer hens were assigned in a completely randomized design to four dietary treatments containing zinc sulphate or organic zinc as Albino-Zn in two levels of 25 or 50 ppm. Feed intake was expressed on a per hen basis. Daily egg collection was expressed on a hen-day basis. Eggs were weighed to calculate egg mass. Feed conversion ratio was calculated as feed consumed per egg mass. Also all eggs produced on days 14, 28 and 42 were collected and used for egg quality parameters. Albumen height was measured and HU was calculated. The yolk and dried shell were weighed then albumen weight was calculated. There was no effect of zinc source or zinc level on egg production, egg weight or feed conversion ratio. However, feed intake was lower in the group receiving 50 mg kg-1 organic zinc. There were no significant treatment differences for weight of egg components or shell thickness, but albumen height and HU were higher in the second fortnight for the groups receiving organic zinc at 25 or 50 mg kg-1 than in the un-supplemented group.
  A. Ahmadi , M.M. Tabatabaei , H. Aliarabi , A.A. Saki and S.A. Hosseini Siyar
  Ninety hens were divided into six groups as a 2x3 factorial design and fed diets containing Wheat Bran (WB) at two levels of 0 and 5% and the enzyme phytase at three levels of 0, 150 and 300 FTU kg-1. Egg weight, egg production, feed intake and Feed Conversion Ratio (FCR) were determined. Eggs were collected on two consecutive days at fortnightly intervals to measure egg size and egg component weights. Shell thickness was measured. Egg production, egg weight, FCR and feed intake were not affected by WB. Egg production, egg weight and feed intake were significantly higher in phytase-supplemented groups than unsupplemented groups. FCR differed significantly between dietary treatments as phytase supplementation significantly decreased FCR. Inclusion of WB to the diets had no effect on egg size and albumen weight. Phytase supplementation did not affect yolk weight, although albumen and shell weight were significantly affected.
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