Abstract
This study was conducted to determine the effects of vitamin C (l-ascorbic acid) and vitamin E (α-tocopherol acetate) on serum concentrations of lipid peroxidation (MDA) and triiodothyronine (T3), thyroxine (T4), adrenocorticotropic hormone (ACTH), and some metabolite and mineral in laying hens reared at high ambient temperatures ranging from 25°C to 35°C. One hundred twenty laying hens (18 wk old; Hy-Line) were divided into 4 groups, 30 hens per group. The laying hens were fed either a basal diet (control) or the basal diet supplemented with either 250 mg of l-ascorbic acid/kg of diet (vitamin C), 250 mg of α-tocopherol acetate/kg of diet (vitamin E), or 250 mg of l-ascorbic acid plus 250 mg α-tocopherol acetate/kg of diet (combination). Separately or as a combination vitamins C and E increased serum vitamin C and vitamin E concentrations (p<0.001) but decreased serum MDA concentration (p<0.05). Serum concentrations of vitamin E and vitamin C were found highest but serum MDA concentration was lowest in the combination group. Supplemental vitamins C and E either separately or in a combination increased serum T3 and T4 concentrations (p<0.05), whereas decreased serum ACTH concentration (p<0.01). Serum glucose and cholesterol concentrations decreased, whereas serum protein concentration increased (p<0.05) when vitamins C and E singly or together were added to the diet. Vitamin C and vitamin E supplementation resulted in an increase in serum concentrations of Ca, P, and K (p<0.01) but a decrease in serum concentration of Na (p<0.05). The results of the present study suggest that supplemental vitamin C and vitamin E alter serum lipid peroxidation, vitamin C, vitamin E and metabolite status, and diets supplemented with a combination of these two vitamins offer a good management practice in laying hens reared at high temperatures. In addition, the results suggest that dietary vitamin C and vitamin E act synergistically.
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Sahin, K., Sahin, N. & Yaralioglu, S. Effects of vitamin C and vitamin E on lipid peroxidation, blood serum metabolites, and mineral concentrations of laying hens reared at high ambient temperature. Biol Trace Elem Res 85, 35–45 (2002). https://doi.org/10.1385/BTER:85:1:35
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DOI: https://doi.org/10.1385/BTER:85:1:35