In this study, the gross alpha and beta activities and 137Cs, 90Sr and 129I radionuclide concentrations in the feeds and thyroid samples obtained from a certain number of sheep, which were fed by Fırat University (Elazığ) Faculty of Veterinary Medicine with varying amounts of fresh lucerne, fodder, silage, straw and concentrate feed were determined. The 137Cs, 90Sr and 129I radionuclide transfer coefficients were also determined. 90Sr and 129I are beta-emitting radionuclides. Sheep with high 90Sr and 129I radionuclide concentrations also have high gross beta radioactivity levels. When an intragroup comparison is performed, the radionuclide concentration in a sheep fed with maximum feed is at the highest level and vice versa. Moreover, the 137Cs, 90Sr and 129I radionuclide transfer coefficients (Ff) for the thyroid samples obtained from the sheep vary between 0.4 × 10-1 - 8.1 × 10-1 d kg-1, 0.4 × 10-2 - 6.1 × 10-1 d kg-1 and 0.4 × 10-1 - 7.3 × 10-1 d kg-1, respectively, and are higher than the expected Ff values and the results obtained in similar studies. The Ff values calculated for the thyroid samples of the straw and fodder group are lower than the Ff values calculated for the thyroid samples of the silage and fresh lucerne group. The radionuclide concentrations for 129I were found to be higher than 90Sr's in the thyroid samples.

中文翻译：

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甲状腺样品中137Cs，90Sr和129I放射性同位素的放射性浓度调查。

在这项研究中，由Fırat大学（Elazığ）兽医学院饲喂了不同数量的新鲜饲料的一定数量的绵羊饲料和甲状腺样品中的总α和β活性以及137Cs，90Sr和129I放射性核素浓度测定了卢塞恩，饲料，青贮饲料，稻草和精饲料。还确定了137Cs，90Sr和129I放射性核素的传输系数。90Sr和129I是发射β的放射性核素。具有高90Sr和129I放射性核素浓度的绵羊也具有较高的总β放射性水平。当进行组内比较时，饲喂最大饲料的绵羊的放射性核素浓度最高，反之亦然。而且137C 从绵羊获得的甲状腺样品的90Sr和129I放射性核素转移系数（Ff）在0.4×10-1-8.1×10-1 d kg-1、0.4×10-2-6.1×10-1 d kg-1之间变化和0.4×10-1-7.3×10-1 d kg-1，分别高于预期的Ff值和类似研究中获得的结果。秸秆和饲料组甲状腺样品的Ff值低于青贮饲料和新鲜卢塞恩组甲状腺样品的Ff值。甲状腺样品中129I的放射性核素浓度高于90Sr。秸秆和饲料组甲状腺样品的Ff值低于青贮饲料和新鲜卢塞恩组甲状腺样品的Ff值。甲状腺样品中129I的放射性核素浓度高于90Sr。秸秆和饲料组甲状腺样品的Ff值低于青贮饲料和新鲜卢塞恩组甲状腺样品的Ff值。甲状腺样品中129I的放射性核素浓度高于90Sr。