›› 2015, Vol. 42 ›› Issue (3): 575-582.doi: 10.11843/j.issn.1671-7236.2015.03.011

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Effects of Supplemental Lipoic acid on the Sport Performance,Plasma Antioxidant Capacity and other Metabolic Index of Yanqi horse

ZHOU Chen1,2, LI Hai-ying1,2, ZANG Chang-jiang1,2, XU Xiang-jun1,2, YU Xiong1,2   

  1. 1. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Xinjiang Key Laboratory of Meat-and-Milk-Production Herbivore Nutrition, Urumqi 830052, China
  • Received:2014-12-05 Online:2015-03-20 Published:2015-03-30

Abstract: This study was conducted to the effects of supplemental different levels of lipoic acid on the performance,plasma antioxidant capacity and other metabolic index of Yanqi horse.11 Yanqi horses were randomly divided into three groups according to performance,body weight,body measurement and age. The groups were referred to as the control group (3 horses),groupⅠ (4 horses) and group Ⅱ (4 horses).The control group was fed basal diet.Horses in the groupsⅠ and Ⅱ were fed with diet supplemented with different levels of lipoic acid.All horses were participated in 20 km racing,on the 20th day.The temperature,the heart rate,the respiratory rate of all horses were measured,30 min after the racing.Simultaneously,blood samples were collected from the jugular vein.The results showed that the heart rate value of the groups Ⅰ and Ⅱ were highly significant lower than the control group (P <0.01),0 and 20 min after the racing.Compared with that of the control group,the plasma GSH-Px activity of the group Ⅰincreased by 44.30% (P <0.05);In addition,the plasma SOD,T-AOC activity of the groups Ⅰ and Ⅱ respectively increased by 42.33% (P <0.01),44.72% (P <0.01) and 77.41% (P >0.05),68.62% (P >0.05);The plasma MDA concentration of the groups Ⅰ and Ⅱ decreased by 41.09% (P <0.05)and 23.48% (P >0.05);and there was a tendency that the plasma NEFA concentration of the groups Ⅰ and Ⅱ were higher than that of the control group (P >0.05).The results showed that the performance and plasma antioxidant capacity of Yanqi horse could be improved by the basal diet added different levels of lipoic acid.Also the physiological function of Yanqi horse could be fast recovery after the racing.Moreover,the symptoms of fatigue of Yanqi horse were mitigated during the racing.In contrast,the effect was better by the addition of lipoic acid in diets of 12.5 g/(d·horse).

Key words: Yanqi horse; lipoic acid; sport performance; antioxidant capacity

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