Effects of Selenium on Thyroid Hormone Levels in Sheep

Authors : Ahmet ATEŞŞAHİN, İbrahim PİRİNÇCİ

Pages : 1401-1404

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, the thyroid hormone levels in sheep experimentally treated with selenium were investigated. Twelve Akkaraman sheep were used in the investigation. Selenium was given intramuscularly at doses of 0.1 insert ignore into journalissuearticles values(Group 1); and 0.4 mg/kg insert ignore into journalissuearticles values(Group 2);. The blood samples were taken from the jugular vein at 1, 2, 4, 8, 24, 48, 96 and 144 hours after the administration. Serum triiodotyronine insert ignore into journalissuearticles values(T3);, thyroxin insert ignore into journalissuearticles values(T4);, free triiodotironine insert ignore into journalissuearticles values(fT3); and free thyroxin insert ignore into journalissuearticles values(fT4); levels were determined using a hormone autoanalyzer. In the comparison between the groups, it was shown that serum T3 levels reached the maximum levels at the 96th and 48th hours; fT4 levels at the 8th and 2nd hours in Groups 1 and 2, respectively. Serum fT3 levels reached the maximum level at the 2nd hour in Group 1 and the minimum level at the 144th hour in Group 2. However, serum T4 levels reached the minimum level at the 2nd hour in Groups 1 and 2. In conclusion, an increase in serum T3, fT3 insert ignore into journalissuearticles values(Group 1); and fT4 levels in sheep given selenium was observed, while a decrease in T4 and fT3 insert ignore into journalissuearticles values(Group 2); levels was seen.
Keywords : Sheep, Selenium, Thyroid Hormone