Some serum parameters of thyroid function such as total T3 (TT3), total T4 (TT4) , reverse T3 (RT3), free thyroxine index (FTI) and TSH were determined in the goats of both IHG homozy-gotes and IHG heterrozygotes.

• 对IHG纯合子羊和杂合子羊进行了血清总T_3(TT_3)、总T_4(TT_4)、反T_3(rT_3)、游离甲状腺激素指数(FTI)以及促甲状腺激素(TSH)等甲状腺功能参数测定.