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Articles by S. Navid
Total Records ( 5 ) for S. Navid
  S. Navid , A. Sheikhlar and K. Kaveh
  The study was conducted to improve meat quality of spent layer hens through supplementing the old layer hens feed with vitamin D3 in combination with papaya leaf meal applied 3 weeks prior to slaughter. Eighty spent chickens were served in this study after a period of laying for 80 weeks. Diets were a corn-soybean, meal based diet for finisher layer with and without vitamin D3 which was supplemented with different levels of 0, 0.5, 1 and 2% for papaya leaf meal. Experiment lasted for 21 days. At day 0, 7, 14 and 21, the birds were scarified; breast muscle was obtained for meat and skin color, shear force, drip loss, cooking loss, crude protein, fat and calcium. Most of parameters showed significant improvement when diet supplemented with papaya leaf meal and vitamin D3. It can be concluded that for some characteristics related to meat quality, combination of papaya leaf meal and vitamin D3 has synergistic effect.
  S. Navid , A. Sheikhlar and K. Kaveh
  Eighty spent chickens were employed in this experiment to assay the effect of combination of vitamin D3 and papaya leaf on antioxidant activity of meat in spent layer hens. Diets were a corn-soybean meal based diet for finisher layer with and without vitamin D3 which was supplemented with different levels of 0, 0.5, 1 and 2% for papaya leaf meal. Experiment lasted for 21 days. At day 0, 7, 14 and 21, the birds were scarified and breast muscle was obtained to determine antioxidant activity. Antioxidant activity was measured using 1,1-Diphenyl-2-Picrylhydrazyl (DPPH). Result obtained from this study demonstrated that antioxidant activity of meat showed remarkable improvement between dietary treatments fed mix of vitamin D3 and papaya leaf and control group. In conclusion, vitamin D3 and papaya leaf when combined indicated an improvement in antioxidant activity of the spent meat.
  S. Navid , M. Hilmi , A.Q. Sazili and A. Sheikhlar
  A study was undertaken to improve meat quality of spent layer chicken through supplementing the old layer birds diet with vitamin D3, papaya leaf meal and pineapple skin meal a few days prior to slaughter. Forty spent layers were obtained to conduct this study after a period of laying for 80 weeks. About 4 diets which were fed to the chicken included diet 1: control diet (based on NRC recommendation level to meet or exceed the bird requirements at finisher stage), diet 2: control + (1x105) I.U. Vitamin D3, diet 3: control + 1% Pineapple Skin Meal (PSM) and diet 4: control + 1% Papaya Leaf Meal (PLM). Chicken were kept in an individual cage and fed for 7 days. At day 7, the chicks were scarified, breast muscle was taken for meat color, shear force, pH of the muscle, CP, fat, Ca, drip loss and cooking loss analysis. The results indicated that both vitamin D3 and papaya leaf meal were potent additives to improve tenderness, drip loss, cooking loss and meat color. However, Vitamin D3 appeared to be the most effective one in improving meat quality of spent layers.
  S. Navid , M. Hilmi , A.R. Alimon , A.Q. Sazili and A. Sheikhlar
  Eighty spent chickens were employed in this study to assay the effect of combination of vitamin D3 and papaya leaf on antioxidant activity of meat in spent layer hens. Diets were a corn-soybean meal based diet for finisher layer with and without vitamin D3 which was supplemented with different levels of 0, 0.5, 1 and 2% for papaya leaf meal. Experiment lasted for 21 days. At day 0, 7, 14 and 21, the birds were scarified and breast muscle was obtained to determine antioxidant activity. Antioxidant activity was measured using 1, 1-Diphenyl-2-Picrylhydrazyl (DPPH). Result obtained from this study demonstrated that antioxidant activity of meat showed remarkable improvement between dietary treatments fed mix of vitamin D3 and papaya leaf and control group. In conclusion, vitamin D3 and papaya leaf when combined indicated an improvement in antioxidant activity of the spent meat.
  A. Sheikhlar and S. Navid
  An investigation was carried out to assay the concentration of dietary 1, 25-dihydroxycholecalciferol [1, 25(OH)2D3] on growth parameters and bone characteristics includes bone ash, Tibial Dyschondroplasia (TD) incidence and plasma minerals in broiler quails. Diets comprised control diet (diet 1) with sub optimal levels of calcium (0.71%) and total phosphorus (0.37%) and diets 2, 3, 4 and 5 that contained control diet supplemented with 2.5, 4.5, 6.5 or 8.5 μg/Kg 1,25(OH)2D3. Dietary treatments had no effect (p>0.05) on the live weight gain and feed conversion ratio. Bone ash was increased significantly (p<0.05) by 6.5 μg/Kg 1, 25(OH)2D3 at 3 wk of age. Treatments effects were shown (p<0.05) on calcium of bone but there was no influence on bone’s phosphorus. The incidence and severity of TD were reduced pronouncedly (p<0.05) by 6.5 μg/Kg 1, 25(OH)2D3 at 3 wk of age. Plasma calcium improved significantly (p<0.05) however; plasma phosphorus did not show any differences (p>0.05) among experimental treatments. In conclusion, dietary level of 6.5 μg/Kg 1, 25(OH)2D3 showed positive effect on the reduction of TD in broiler quails at 3 wk of age.
 
 
 
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