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Biol Trace Elem Res. 2002 Jan;85(1):59-70.

Protective role of supplemental vitamin E and selenium on lipid peroxidation, vitamin E, vitamin A, and some mineral concentrations of Japanese quails reared under heat stress.

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Department of Animal Nutrition, Veterinary Faculty, University of Firat, Elazig, Turkey.


This study was conducted to determine the effects of vitamin E and selenium (Se) on lipid peroxidation (MDA), serum and liver concentration of antioxidant vitamins, and some minerals of Japanese quails reared under heat stress (34 degrees C). One hundred twenty 10-d-old Japanese qualis (60 males, 60 females) were randomly assigned to 4 treatment groups, 3 replicates of 10 birds each. The experiment was designed in a 2x2 factorial arrangement using two levels of vitamin E (125 and 250 mg/kg of diet) and two levels of selenium (0.1 and 0.2 mg/kg of diet). Greater dietary vitamin E and selenium inclusions resulted in a greater (p = 0.001) serum vitamin E and vitamin A, but lower (p = 0.001) MDA concentrations. Liver vitamin E and vitamin A concentrations increased (p = 0.001) and MDA concentrations decreased (p = 0.001) when both dietary vitamin E and selenium increased. No interactions between vitamin E and selenium were detected (p > or = 0.11) for any parameters. Increasing both dietary vitamin E and selenium caused an increase in serum concentrations of Fe and Zn (p = 0.001), but a decrease in serum concentration of Cu (p = 0.001). Results of the present study showed that dietary vitamin E and selenium have synergistic effects and that supplementing a combination of dietary vitamin E (250 mg/kg of diet) and selenium (0.2 mg/kg of diet) offers a good management practice to reduce heat stress-related depression in performance of Japanese quails.

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