Colavita G P, Debenedetti A, Ferri C, Lisi B, Lucaroni A
Boll Soc Ital Biol Sper. 1983 Jun 30;59(6):779-85.
Plasma thyroid hormones (T3 and T4) were investigated by immunoenzymatic methods in an Umbrian indigenous goat population. Seventy females and 10 males, aging 1 to 14 years, were tested in different periods of the year. Mean values (m +/- SD) of 320 determinations were 2,4 +/- 1,5 ng/ml (ranging from 0,5 to 7,0) for T3 and 6,5 +/- 2,5 micrograms/dl (range 2,2 - 14,2) for T4. The highest values for both hormones were recorded in spring, the lowest at the end of the summer (mean decrease: T3 = 57%; T4 equal 35%). Thyroid hormone levels decreased with age, young animals under 3 years showing higher values and lower summer decreases (particularly of the T3 levels), than mature animals (4 - 8 years old). Old goats, (aging 9 - 14 years) showed the lowest values for both hormones.
采用免疫酶法对翁布里亚本地山羊群体的血浆甲状腺激素（T3和T4）进行了研究。在一年中的不同时期对70只雌性山羊和10只雄性山羊进行了检测，这些山羊年龄在1至14岁之间。320次检测的平均值（m +/- SD）为：T3为2.4 +/- 1.5 ng/ml（范围为0.5至7.0），T4为6.5 +/- 2.5微克/分升（范围为2.2至14.2）。两种激素的最高值出现在春季，最低值出现在夏末（平均降幅：T3 = 57%；T4 = 35%）。甲状腺激素水平随年龄增长而下降，3岁以下的幼龄动物激素值较高，夏季降幅低于成年动物（4 - 8岁）（尤其是T3水平）。老年山羊（9 - 14岁）两种激素的值最低。
