The levels of thyroid hormones (T3, T4 and FT3) in female duck serum, fertilized eggs, and 7, 11, 15, 19, 22, 28-days embryonics of Gaoyou duck and Jinding Duck were analyzed with radioimmunoassay (RIA). The levels of thyroid hormones in fertilized eggs were higher than those in the duck serum. Meanwhile, the levels of thyroid hormones in serum of different ages had almost the same variation trend, which went down after 15 days. The results suggested that thyroid hormones played an important role in early embryonic development of duck.%用放射免疫分析法(RIA)测定高邮鸭和金定鸭7、11、15、19、22、28日胚龄血浆、种蛋、产蛋母鸭血清中甲状腺激素(T3、T4和FT3)水平.结果显示,种蛋中激素水平高于母鸭血清中的水平；两品种不同胚龄血浆中激素水平变化趋势基本一致,15日胚龄之前,激素水平处于较高水平,15日胚龄之后,激素水平处于一个较低但相对平稳的状态.结果表明,甲状腺激素对胚胎生长发育具有重要作用,尤其是在胚胎的发育前期.
展开▼
