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Effects of Coenzyme Q(10) on Growth Performance and Heart Mitochondrial Function of Broilers Under High Altitude Induced Hypoxia

文献类型： 外文期刊

作者： Huang, Beiying 1 ; Guo, Yuming 1 ; Hu, Xiaofei 2 ; Song, Yi 1 ;

作者机构： 1.China Agr Univ, Coll Anim Sci & Technol, State Key Lab Anim Nutr, Beijing 100193, Peoples R China

2.Henan Acad Agr Sci, Henan Key Lab Anim Immunol, Zhengzhou 450002, Peoples R China

关键词： broiler;CoQ10;heart mitochondria;high altitude;performance

期刊名称：JOURNAL OF POULTRY SCIENCE （ 影响因子：1.425； 五年影响因子：1.25 ）

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收录情况： SCI

摘要： In order to test whether exogenous coenzyme Q(10) (CoQ(10)) can improve growth performance and heart mitochondrial function of broilers grown at high altitude, a study was conducted on a farm in Xining City of Qinghai Province of China at an altitude of 2,200 m with a 78% of partial pressure of atmospheric oxygen (O-2) as compared to that at sea level. Three hundred, 1-d-old male, broilers (Arbor Acres) were divided into three groups and fed diets supplemented with 0 mg (control, C), 20 mg (Q1) or 40 mg (Q2) CoQ(10) per kg feed. CoQ(10) supplementation increased body weight (BW) of broilers at 21 d of age. BWs of Q1 (551.6 +/- 9.8 g) and Q2 (509.4 +/- 10.7 g) were higher than that of C (465.7 +/- 10.3 g) at 21 d of age (P<0.05). At 42 d of age, BW of Q1 (2047.5 +/- 40.8 g) was higher than that of C (1895.9 +/- 39.0 g; P<0.05). Supplementation with CoQ(10) decreased heart weight as a percentage of total BW (P<0.05) and improved yield (% BW) of breast muscle (P<0.05) as compared to C. Supplementation with CoQ(10) at 40 mg/kg feed decreased drip loss of breast muscle (P<0.05). Oxygen consumption of state III respiration and succinate-CoQ oxidoreductase (complex II) activity of heart mitochondria were increased by supplementation of CoQ(10) (P<0.05). Supplemental CoQ(10) at 40 mg/kg feed increased state IV respiration rate (P<0.05). There was no significant difference in respiration control rate of heart mitochondria among the three treatment groups. Supplementation with CoQ(10) at 20 mg/kg increased glutathione peroxidase activity (P<0.05), and concomitantly decreased (P<0.05) the content of malondialdehyde in serum of 35-d old broilers. These findings suggest that CoQ(10) can be used as a growth promoter in broilers at high altitude.

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