Effects of concomitant selenium and vitamin E administration on thyroid hormone metabolism in broilers
Abstract
A total of 400, as hatched, broilers were used to investigate the effect of selenium (Se) and vitamin E supplementation on thyroid hormones metabolism. There were 5 replicates of 4 dietary treatments namely: control (C), a soybean meal maize basal diet with adequate Se and vitamin E (0.3 mg Se per kg diet and 80 mg vitamin E per kg diet), control diet with Se added (Se+, with an additional 1 mg of Se per kg of diet), control diet with vitamin E added (E+, with an additional 350 mg of vitamin E per kg of diet) and Se+E+ (with additional 1 mg of Se and 350 mg of vitamin E per kg of diet). Diets were isonitrogenous and isocaloric. Zinc L-selenomethionine complex was used to increase Se content and dl-α-tocopheryl acetate to increase vitamin E content. The experiment lasted 42 days. Plasma Se concentration increased in Se+ groups, while whole blood glutathione peroxidase (GPx) activity increased in Se+, E+ and Se+E+ groups compared to control. Hepatic type I iodothyronine deiodinase (ID-I) and thyroid hormone concentrations were unaffected by any dietary treatment. It is concluded that supplementation with Se or vitamin Ε alone or in combination above animal’s requirements does not affect thyroid hormone metabolism and liver ID-I activity under the conditions examined.
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PAPPAS, A. C., KOTSAMPASI, B. M., KALAMARAS, K., FEGEROS, K., ZERVAS, G., KALOGIANNIS, D., & CHADIO, S. E. (2018). Effects of concomitant selenium and vitamin E administration on thyroid hormone metabolism in broilers. Journal of the Hellenic Veterinary Medical Society, 68(3), 355–362. https://doi.org/10.12681/jhvms.15490
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- Vol. 68 No. 3 (2017)
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- Research Articles
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