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Influence of the Levels of Vitamin A on Blood Biochemical Parameters and Sersum Antioxidant Indexes of Hainan-Japanese Cattles

LIU Quan-wei1, SUN Rui-ping1, WEI Li-min1, WANG Feng2, ZHENG Xin-li1, CHAO Zhe2, LIU Hai-long2, HUANG Li-li1, WU Duo-de3   

  1. 1. Institute of Animal Science and Veterinary Medicine,Hainan Academy of Agricultural Sciences, Haikou 571100,China;
    2. Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemil Disease Research, Haikou 571100, China;
    3. Hainan Station for Popularizing Techniques of Animal Science, Haikou 570203,China
  • Received:2012-02-14 Online:2012-09-20 Published:2012-09-18

Abstract: This experiment was undertaken to investigate the effects of vitamin A levels on serum antioxidant indexes and blood biochemical indexes of Hainan-Japanese cattles. Twelve Hainan-Japanese cattles with average initial weight of(148.17±15.52) kg and the same genetic backgrounds were randomly divided into four treatments. Cattles were fed on white corn-soybean basal diet as the control group, the experimental groups were fed on additional 2500, 5000, 7500 IU/kg vitamin A into their own variations and basic feedstuff. The trial lasted for 40 days.The results showed that the levels of vitamin A had no significant infuence on serum antioxidant indexes of Hainan-Japanese cattles(P>0.05), but the vitamin A levels could increase the content of SOD and T-AOC in serum; the supplementation of vitamin A significantly increased the levels of glucose in blood(P<0.05), and some of the key enzymes activity increased too(P>0.05). In conclusion, some key enzyme activity in blood and serum antioxidant capacity could be improved by increasing the vitamin A levels in diets, the supplementation of vitamin A 7500 IU/kg was the best.

Key words: vitamin A; Hainan-Japanese cattle; serum antioxidant indexes; blood biochemical indexes

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