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Articles by N. Afzali
Total Records ( 3 ) for N. Afzali
  S.J. Hosseini Vashan , N. Afzali , M. Mallekaneh , M.A. Nasseri and A. Allahresani
  Ninety-six 26-wk-old white leghorn layers (w-36 variety) were fed commercial diets containing 0, 4, 7 and 10% safflower seed (SS) and the diets were iso-caloric and iso-nitrogenous. Hens randomly assigned to 4 treatment diets, with 3 replicates and 8 layers in each replicate. The experiment was conducted over a period of 12 wk in order to study the effects of feeding safflower seed on hen performance (egg production, egg weight, egg mass, feed intake, feed conversion ratio (FCR) and weight gain) and egg quality parameters (Hough unit score, yolk color index, yolk index, egg shape, shell weight, shell thickness and density). The yolk of eggs extracted and cholesterol content were determined in each period. Blood samples were collected in non-heparinsed tubes from six hens in each treatment by puncturing the bronchial vein in end of experiment and serum was collected after 8-10 hrs as per standard procedures and was stored for subsequent analysis. Hen performance and egg quality parameters were not significantly (p > 0.05) different among treatments except in specific gravity and body weights. The lowest specific gravity observed in 10% SS (1.0806) and the highest gain weight was in 4% SS (140g) treatment. However the lowest Hough unit and shell thickness observed in 10% SS but the different among treatments were not statistically significant. The mean yolk cholesterol content, blood cholesterol and antibody titter against ND and IBD were not significantly (p < 0.05) different among treatments but the lowest yolk and blood cholesterol observed in 10 % SS.
  S.J. Hosseini-Vashan and N. Afzali
  Ninety-six 26-week-old white leghorn layers (w-36) were fed commercial diets containing 0, 1.5, 3, 4.5% Palm Olein Oil (PO) and the diets were iso-caloric and iso-nitrogenous. Hens randomly assigned to 4 treatment diets, with 3 replicates and 8 layers in each replicate. The experiment was conducted over a period of 12 week in order to study the effects of feeding palm olein oil on hen performance (egg production, egg weight, egg mass, feed intake, feed conversion ratio (FCR) and weight gain) and egg quality parameters (Hough unit score, yolk colour index, yolk index, egg shape, shell weight, shell thickness and density). The yolk of eggs extracted and cholesterol content were determined in each period. Blood samples were collected in non-heparin zed tubes from 6 hens in each treatment by puncturing the bronchial vein at end of experiment and serum was collected after 8-10 h as per standard procedures and was stored for subsequent analysis. Hen performance (egg production, egg weight, egg mass, feed intake and FCR) and egg quality parameters (Haugh unit score, yolk colour index, yolk index, egg shape, shell weight, shell thickness and density) were not significantly (p>0.05) different among treatments except in body weight. The highest and lowest gain body weight was observed on 10% (170 g) and 0% (90 g) PO treatment, respectively (p<0.05). The yolk and blood cholesterol content were increased in 4.5% palm olein oil and the different among palm olein oil levels and control were statistically significant (p<0.05).
  H. Kermanshahi , A.R. Hazegh and N. Afzali
  In an in vivo study, Sodium Bentonite (SB) was evaluated for its ability to reduce the deleterious effects of Aflatoxin B1 (AFB1) in broiler chickens. In this study, 288 days old Ross male broiler chickens were used and randomly assigned to 9 treatment groups, with 4 replicates of 8 birds each. Three levels of Aflatoxin B1, AFB1 (0, 500 and 1000 ppb) and 3 levels of SB (0.0, 0.5 and 1.0%) were fed to chickens from 0-42 days of age. Feeding levels of AFB1 alone significantly decreased (p<0.05) feed intake, body weight and body weight gain, while, SB levels alone or in combination with AFB1, had no effect on the mentioned traits. No significant difference was seen for feed conversion ratio during periods of 0-42 days of age. In the diet containing AFB1, relative weight of the carcass, thigh and breast were significantly decreased (p<0.05). Adding AFB1 alone into the diets significantly increased (p<0.05) serum ALT, AST and LDH enzymes and decreased serum GGT enzyme (p<0.05). However, SB alone or in combination with AFB1 had no effect on the above mentioned enzymes. It is suggested that sodium bentonite at the levels of 0.5-1.0% might be used for reducing the adverse effects of aflatoxins in broiler chickens.
 
 
 
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