Akademik Veri Yönetim Sistemi
II. International Iğdır Symposium, Iğdır, Türkiye, 9 - 11 Ekim 2017, ss.43
Abstract
This experiment was conducted to evaluate the effects of dietary vitamin E (α-tocopherol acetate) and selenium (selenomethionine) and a combination of the two, on the selenium (Se), copper (Cu), zinc (Zn), iron (Fe), calcium Ca and magnesium (Mg) levels in liver, kidney, tibia, feather, breast and heart tissues of laying hens. Ninety-six white Lohman LSL laying hens aged of 24 weeks were randomly divided into 4 equal groups (n=24) each of which was composed of six subgroups. The groups were fed with the diets that consisted of basal diet (2770 kcal/kg ME and 17 % crude protein) (Control), basal diet + 250 mg / kg Vit-E (Trial-I), basal diet + 0.9 mg/ kg Se (Trial-II) and basal diet + 250 mg / kg Vit-E + 0.9 mg/ kg Se (Trial-III), respectively for 12 weeks. Diet and water were provided as ad libitum. At the end of the experiment, 12 animals from each group were sacrificed and aforementioned tissues were collected and stored at -20 ºC until analyzes. In tissue samples bioelements levels were analyzed by ICP-MS. Whereas, dietary selenium and vitamin-E did not affect on Ca and Mg concentrations, Se concentrations significantly increased, Cu concentrations were significantly decreased and Zn and Fe concentrations were modified in all studied tissues in experimental groups were compared to control group. Also, Dietary Vit-E got very important positive effect on concentrations of Se in all studied tissues. The results suggested that dietary selenium and Vitamin E can be modified the mineral concentrations of poultry meat also may be increased poultry meat concentrations of selenium that has been known important positive role on human health. Although, supplementing dietary vitamin E and Se have such beneficial effects when using trace elements should be carefully. Because deficiency or supplementation of one of them mg alter their balance and trigger antagonistic or synergistic effects. Alteration of trace element balance may concomitanty effect the antioxidant defense system. Because several trace elements (Se, Fe, Cu and Zn) are integral part of various antioxidant enzymes.Keywords: Bioelements, Tissue Samples, Laying Hen, Vitamin E, Organic Selenium.