Changes in Serum Thyroid Hormone Levels in Newborn Calves as a Diagnostic Index of Endemic Goiter

Journal of Veterinary Medical Science

Kenichi TAKAHASHI¹  Rio John T. DUCUSIN¹  Eiji TAKAHASHI¹  Takao SARASHINA¹  Yuji UZUKA¹  Shigeyuki TANABE¹ 

[1] Department of Veterinary Internal Medicine, Obihiro University of Agriculture and Veterinary Medicine

关键词: calf;    endemic goiter;    T3/T4 ratio;   

DOI  :  10.1292/jvms.63.175

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(14)Cited-By(4)Maximum serum thyroxine (T4) and triiodothyronine (T3) levels of healthy calves were seen at 1 day after birth, and thereafter rapidly decreased until 5 days after birth. They stabilized until 2 weeks after birth, then gradually decreased until 4 weeks after birth. Serum T4 levels of calves with endemic goiter tended to be lower than those of healthy ones, but showed similar levels to those of adult cows. T3 levels of calves with goiter were similar to those of healthy ones, but showed higher variation. T4/T3 ratio of calves with goiter were significantly lower than those of healthy ones and adult cows. While individual levels of serum T4 and T3 at just after birth could not be considered as a diagnostic index, the T4/T3 ratio could be adopted as a diagnostic index of endemic goiter.

【 授权许可】

Unknown