›› 2015, Vol. 42 ›› Issue (4): 896-902.doi: 10.16431/j.cnki.1671-7236.2015.04.019

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Effects of Supplemental Amino Acids on the Performance,Plasma Antioxidant Capacity and other Metabolic Index of Yanqi Horse

CAO Li-ping1,2, ZANG Chang-jiang1,2, XU Xiang-jun1,2, LI Hai-ying1,2   

  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:2015-01-05 Online:2015-04-20 Published:2015-05-05

Abstract: This test mainly studied the effects of supplemental different levels of amino acids 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, 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 groups Ⅰ and Ⅱ were fed with diet supplemented with different levels of amino acids. All horses were participated in 20 km racing, on the 20th day. Temperature, heart rate, respiratory rate of all horses were measured, 30 min after the racing. Simultaneously, blood samples were collected from the jugular vein. The result showed that the heart rate value of 0 min after the racing, groups Ⅰ and Ⅱ were significantly lower than control group (P<0.05), the heart rate of 20 min after the racing and respiratory rate of 5 min after the racing, groupsⅠ and Ⅱ were highly significantly lower than the control group (P<0.01);The plasma GSH-Px, T-SOD activity and GLU concentration of groups Ⅰ and Ⅱ compared with control group respectively increased by 34.41% (P>0.05), 37.02% (P<0.01), 37.41%(P<0.01) and 32.06%(P>0.05), 35.46%(P<0.01), 26.98%(P<0.05);The plasma MDA, LA concentration of groups Ⅰ and Ⅱ compared with control group respectively decreased by 38.46%(P<0.05), 17.56%(P<0.05) and 38.26%(P<0.05), 13.04%(P>0.05). The results showed that the performance and antioxidant capacity of Yanqi horse could be improved by the basic ration added different levels of amino acids. The physiological function of Yanqi horse could be fast recovery after the racing. The symptoms of fatigue of Yanqi horse were mitigated during the race. Compared, added 0.25% lysine feed supplement was especially effective.

Key words: Yanqi horse; amino acids; performance:antioxidant

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