Effect of Dietary Vitamin E Supplementation on Growth Performance and Oxidative Condition of Red Sea Bream <I>Pagrus major</I>

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  • Saw Mya Linn
    The United Graduate School of Agricultural Sciences, Kagoshima University Laboratory of Aquatic Animal Nutrition, Faculty of Fisheries, Kagoshima University
  • Ishikawa Manabu
    Laboratory of Aquatic Animal Nutrition, Faculty of Fisheries, Kagoshima University
  • Koshio Shunsuke
    Laboratory of Aquatic Animal Nutrition, Faculty of Fisheries, Kagoshima University
  • Yokoyama Saichiro
    Laboratory of Aquatic Animal Nutrition, Faculty of Fisheries, Kagoshima University

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Other Title
  • マダイの成長と酸化ストレスに対するビタミンEの添加効果
  • Effect of Dietary Vitamin E Supplementation on Growth Performance and Oxidative Condition of Red Sea Bream Pagrus major

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Abstract

The study was conducted to investigate effect of supplementation of α-tocopherol for juvenile red sea bream Pagrus major in relation to growth performance, tissue fatty acid composition, tissue vitamin E content, thiobarbituric acid reactive substances (TBARS) and oxidative condition. Four levels of diets (0, 100, 200, 400 mg α-tocopherol/ kg diet) were fed to triplicate groups of fish (mean 112.7±1.7 g) for 30 days. Weight gain and specific growth rate of the fish showed no statistical difference among the treatments. Both liver and muscle vitamin E contents increased (P<0.05) in fish fed 400 mg vitamin E/kg, followed by 200 mg and 100 mg vitamin E/kg diet. Tissue TBARS values were inversely related (P<0.05) by increasing the level of vitamin E. Docosahexaenoic acid and n-3 highly unsaturated fatty acids were increased relative to the dietary vitamin E levels (P<0.05). Hemoglobin was increased but plasma triglyceride, total cholesterol and oxidative stress were decreased (P<0.05) as dietary vitamin E increased. In conclusion, the requirement level of vitamin E for red sea bream was 200 mg/kg of diet to reduce the lipid peroxidation in fish tissues and improve the health condition of fish. However dietary Vitamin E level did not affect on the growth performances of fish.

Journal

  • Aquaculture Science

    Aquaculture Science 62 (4), 329-339, 2014

    Japanese Society for Aquaculture Science

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