Antioxidant properties of chromium and zinc |
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Authors: | Muhittin Onderci Nurhan Sahin Kazim Sahin Nermin Kilic |
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Institution: | (1) Veterinary Control and Research Institute of Ministry of Agriculture, 23119 Elazig, Turkey;(2) Department of Animal Nutrition, Veterinary Faculty, Firat University, 23119 Elazig, Turkey;(3) Department of Biochemistry, School of Medicine, Firat University, 23119 Elazig, Turkey |
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Abstract: | The effects of chromium (chromium picolinate, CrPic) and zinc (ZnSO4H2O) supplementation on serum concentrations of malondialdehyde (MDA) (an indicator of lipid peroxidation) and serum status
of some antioxidant vitamins and minerals of laying hens (Hy-Line) reared at a low ambient temperature (6.8°C) were evaluated.
One hundred twenty laying hens (Hy-Line; 32 wk old) were divided into 4 groups, 30 hens per group. The hens were fed either
a basal diet or the basal diet supplemented with either 0.4 mg Cr/kg of diet, 30 mg Zn/kg of diet, or 0.4 mg Cr plus 30 mg
Zn/kg of diet. Digestibility of nutrients (dry matter DM], organic matter OM], crude protein CP], and ether extract EE])
increased by supplementation of chromium and zinc (p<0.05). Supplemental chromium and zinc increased serum vitamins C and E but decreased MDA concentrations (p<0.05). Additionally, supplemental chromium and zinc caused an increase in the serum concentrations of Fe, Zn, Mn, and Cr
(p < 0.05). The present study showed that low ambient temperature causes detrimental effects on the digestibility of nutrients
and antioxidant status and that such detrimental effects caused by low ambient temperature can be alleviated by chromium and
zinc supplementation, particularly when Cr and Zn were simultaneously included into the diet. Data obtained in the present
study suggest that such supplementation can be considered as a protective management practice in a diet of laying hens for
alleviating negative effects of cold stress. |
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Keywords: | Cold stress chromium zinc MDA minerals laying hen |
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