H. Jozdani; S. A Hosseini; H. Lofollahian
Abstract
In order to determination the methionine requirement of Arian broilers chickens during the starter period, a trial with 700 broiler chickens in a completely randomized design with 7 treatments, 5 replicates and 20 chicks in each experimental units was performed. Experimental groups were consisted of ...
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In order to determination the methionine requirement of Arian broilers chickens during the starter period, a trial with 700 broiler chickens in a completely randomized design with 7 treatments, 5 replicates and 20 chicks in each experimental units was performed. Experimental groups were consisted of 0.38, 0.43, 0.48, 0.53, 0.58, 0.63 and 0.68 % of methionine. Other amino acids provided higher than the recommendation. Broken line equations were used to determine the methionine requirement. Body weight at the age of 7 and 14 days, with weight gain and FCR during days 0-7 and 0- 14days were affected by different levels of methionine (p<0.05). Broken line models were fitted only for FCR at the age of 7 days. Methionine requirement for this period were 0.51 %. The feed and product prices (live weight) were used by order of maximum benefit to determining methionine requirement. Methionine requirement for this method were 0.55 percent
S. A. Hosseini; M. Hamdieh; H. Lofollahian
Abstract
To investigate the effects of Zataria multiflora Boiss essential oil (ZMB) on incidence of ascites syndrome and blood parameters of Arian broiler chicks, an experiment with 500 one-day-old chicks were conducted. This experiment was based on completely randomized design with 5 treatments including 1) ...
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To investigate the effects of Zataria multiflora Boiss essential oil (ZMB) on incidence of ascites syndrome and blood parameters of Arian broiler chicks, an experiment with 500 one-day-old chicks were conducted. This experiment was based on completely randomized design with 5 treatments including 1) control (basal diet), 2) basal diet with 100 mg/kg probiotic, 3) basal diet with 150 mg/kg avilamycine, 4) basal diet with 200 and 5) basal diet with 400 mg/kg Zataria multiflora Boiss essential oil) with 4 replicates and 25 chicks per replicate in a 42 days. At 35 days of age, 3 mL of blood was collected from the brachial vein of 2 birds from each pen. The concentrations of total protein, calcium, phosphorus, albumin, globulin, triglyceride, cholesterol, HDL and LDL in serum samples were subsequently measured. For investigating ascites related metabolites, hematocrits, RV/ TV ratio, heart weight, T3 and T4 hormones were measured.The RV/TV ratio was investigated at the age of 42 days According to result, using ZMB had no significant effect on blood parameters including, cholesterol, triglycerides, HDL, LDL, calcium, phosphorus, total protein, albumin, and globulin (p>0.05). Investigation of ascites related parameters indicated that red blood cells count, hematocrit, T3 and T4 hormones and heart weight didn’t affected by using ZMB (p<0.05). However, Zataria multiflora Boiss essential oil at levels of 200 and 400 mg/kg significantly reduced RV/TV ratio in comparison with control (p<0.05). As the RV/TV ratio is a reliable indicator for ascites, it can be concluded that Zataria multiflora Boiss essential oil could be attractive subject for future investigation in ascites induced broiler o-bid/_ nu�E ��C ataria multiflora Boiss essential oil) with 4 replicates and 25 chicks per replicate in a 42 days. At 35 days of age, 3 mL of blood was collected from the brachial vein of 2 birds from each pen. The concentrations of total protein, calcium, phosphorus, albumin, globulin, triglyceride, cholesterol, HDL and LDL in serum samples were subsequently measured. For investigating ascites related metabolites, hematocrits, RV/ TV ratio, heart weight, T3 and T4 hormones were measured.The RV/TV ratio was investigated at the age of 42 days According to result, using ZMB had no significant effect on blood parameters including, cholesterol, triglycerides, HDL, LDL, calcium, phosphorus, total protein, albumin, and globulin (p>0.05). Investigation of ascites related parameters indicated that red blood cells count, hematocrit, T3 and T4 hormones and heart weight didn’t affected by using ZMB (p<0.05). However, Zataria multiflora Boiss essential oil at levels of 200 and 400 mg/kg significantly reduced RV/TV ratio in comparison with control (p<0.05). As the RV/TV ratio is a reliable indicator for ascites, it can be concluded that Zataria multiflora Boiss essential oil could be attractive subject for future investigation in ascites induced broiler
M. H. Nemati; H. lotfollahian; M. H. Shahir; M. T. Harkinejad; S. A. Hoseini
Abstract
This experiment was performed to determine the role of vitamin E and coenzyme Q10 antioxidants on performance and ascites parameters of broiler chicks in cold stress conditions using a completely randomized design with 5 treatments and 5 replicates in each treatment. Treatments were: positive control ...
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This experiment was performed to determine the role of vitamin E and coenzyme Q10 antioxidants on performance and ascites parameters of broiler chicks in cold stress conditions using a completely randomized design with 5 treatments and 5 replicates in each treatment. Treatments were: positive control (PC, normal thermal conditions without antioxidants), negative control (NC, cold stress without antioxidants), NC + vitamin E (150 mg/kg diet), NC + Q10 (40 mg/kg diet) and NC + E (150 mg/kg diet) + Q10 (40 mg/kg diet). Temperature decreased gradually between days 15 to 21 and fixed at 15oC afterwards. Result showed that there were significant differences between treatments in body weight gain (BWG) and feed conversion ratio (FCR) (p<0.05). The NC group had the lowest BWG and the highest FCR amongst the dietary treatments but there were no significant difference between positive control and antioxidant group for this trait. In spite of a higher amount of FI for the negative control, there were no significant differences in FI between the treatments. Ascites indicators such as heart weight, RV/TV ratio, red blood cell count, hematocrit, and T3/T4 ratio were significantly increased in the negative control (p<0.05). Antioxidants in stressful conditions improved these parameters. Beside of an increase in liver weight and T3 were observed in the negative control but the differences were not significant (p<0.05). In general, the use of vitamin E and coenzyme Q10 antioxidants led to improvement in performance and ascites index in broiler chicken exposed to cold stress
