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Articles by A.A. Saki
Total Records ( 8 ) for A.A. Saki
  Z. Ansari Pirsaraei , A.A. Saki , M. Kazemi Fard and H. Saleh
  The effect of diets with different levels of tallow on broiler breeder performance was evaluated in the study. About 3 different levels of fats (0.5, 1 and 1.5%) were added into a corn-soybean meal-based broiler breeder diet. The control diet included no supplementary fat. All diets were isocaloric and isonitrogenous. Feeding of experimental diets was initiated when broiler breeders (Ross 308) were 22 week old. Body weight of females was not affected by dietary treatments during the experimental period. Adding different levels of tallow to broiler breeder diet affected egg yolk weight (%), albumen weight (%) and yolk: albumen ratio (%) compared with controls (p<0.05). However, double-yolked egg, liveability, fertility (%), hatchability of fertile eggs (%), hatchability of total eggs set (%) and chick weight (g) were not affected by dietary treatments. Tallow supplementation to breeder diet significantly reduced hen-day egg production and egg weight (p<0.01) in comparison with controls. Female body weights were not affected by dietary fat addition through the entire experimental period. These data suggest that inclusion of different levels of tallow up to a level of 1.5% to the corn-soybean meal diet may affect egg production performance, fertility, egg weight, chick weight, hatching of eggs set and specific gravity without any adverse effect on body weight and settable egg characteristics.
  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.
  A.A. Saki , G. Pourhesabi , A. Yaghobfar , M.A. Mosavi , M.M. Tabatabai and M. Abbasinezhad
  An experiment was conducted to study the effects of different levels of raw and processed vetch (Vicia sativa) seeds on broiler performance. The experiment was carried out in a Completely Randomized Design. Four hundred and seventy six day-old broilers of male Hubbard strain were used. Seven treatments (dietary contain 0, 10, 20 and 30% levels raw or processed vetch seeds) were arranged by 4 replications and 17 broilers in each. The experiment period was 42 days and diets were isonitrogenous and isocaloric. Body weight gain was reduced significantly (p<0.05) by 20 and 30% raw and processed vetch seeds in comparison with control. No significantly difference was shown in body weight gain by 10% processed and 20% raw vetch seeds compared with control group. The similar reaction was found in feed conversion ratio between treatments with exception by 30% raw dietary vetch seed. The results of this study have shown that desirable performance was observed by 10% of common vetch seeds in broiler performance.
  A.A. Saki , H.A. Mohammad Pou , A. Ahmdi , M.T. Akhzar and M.M. Tabatabie
  The experiment was conducted with two levels of protein (23 and 20% in starter, 20 and 18% in grower) and three levels of methionine (NRC, 110 of NRC and 120% of NRC in starter and grower stages). No significant differences were found for protein, methionine or their interaction on Feed Intake (FI) and Feed Conversion Ration (FCR) for starter and grower, with the exception of an interaction of 20% CP and 0.46% (120% of NRC) methionine which significantly improved (p<0.05) the FCR compared with 18% CP and 0.38% (NRC) level of methionone, at the grower stage. Carcass yield and breast meat were significantly (p<0.05) increased by 23% Crude Protein (CP) compared to 20% in starter. In contrast, abdominal fat was significantly decreased (p<0.05) by 23 and 20% CP diet in starter and grower, respectively compared to the other levels of CP as well as by high levels of methionine. In the interaction of 20% CP and high level of methionine (0.46%) on carcass yield, a significant increase (p<0.05) was found in grower stage compared with 18% CP and both 0.38% and 0.42% (110% of NRC) of methionine levels. A similar effect was found on breast meat yield compared with interaction of both 0.5% (NRC) and 0.55% (110% of NRC) of methionine and 20% CP at 21 days, as well as at 42 days of age with 0.38% methionine and 18% CP. Finally, the results of this study, have suggested that methionine/CP ratio could be adjusted at 0.024% (0.024 g methionine/per g crude protein) in starter and 0.023% for grower. Decreased CP in the diet, increased breast meat yield and reduction of abdominal fat were achieved by these ratios of methionine/protein.
  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.
  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.A. Saki , M.M. Tabatabie , A. Ahamadi , S.A. Hossenin Sayer , S. Mirzayi and N. Kiani
  Kitchen-waste could be used in poultry feeding. One hundred and eighty Arian day old chickens were placed in 4 treatments, includes 4 replicates and 23 chickens in each. Treatments were consisted in (0, 10, 20 and 30%) kitchen-waste which was used after processed. Gross and metabolizable energy in kitchen-waste were 4300 and 1999 kcal kg-1, respectively. No significant differences were observed in body weight, weight gain and feed conversion ratio in 42 days of age. In contrast feed intake was significantly (p<0.05) higher in 10% of kitchen waste compared to other treatments. Brest meat was significantly greater (p<0.05) in kitchen-waste diets than control. The similar trend was shown in intestinal viscosity. The result of this study has shown that kitchen-waste could be used 10% in broiler feeding without any adversely effect.
  Mohammad K. Fard , H.N. Moghadam and A.A. Saki
  This experiment was carried out to effect of different levels of calcium, phosphorus and vitamin D3 on the calcium, phosphorus and magnesium of plasma, hatchability and performance from Ross 308 broiler breeders with 20 weeks af age at begining of the experiment. A completely randomized experimental design was applied in 3x2 factorial arrangement with 3 levels of calcium 3.122, 85, 2.56 and 3 levels of phosphorous 0.41, 0.37, 0.33 and 2 levels of vitamin D3 (3300, 3000 IU) with 4 replicates of 10 birds plus one cockerel in each pen. At end of experiment different parameters such as calcium, phosphorus and magnesium of plasma percentage, egg shell percentage, egg weight, calcium and phosphorus of tibia, hatchability, production and feed conversion ratio measured. After statistical analysis, it became clear that the treatments effect on all parameters except, production, hatchability and FCR cannot have a significant affect (p<0.05). It was concluded that the positive function of vitamin D3 Iin this field.
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