Zhou X, Dong W, Zhuang L Z
University of Agriculture and Animal Sciences, Changchun, Peoples Republic of China.
Vet Res Commun. 1995;19(2):95-9. doi: 10.1007/BF01839275.
Four gifts of the Chinese Beijing Black breed, all from the same litter, had their blood serum concentrations of luteinizing hormone (LH), follicle stimulating hormone (FSH) and oestrogens (E2) measured by radioimmunoassay at intervals of 20 days between the ages of 5 and 185 days. The concentrations of LH declined sharply between days 5 to 25 and remained low until rising again from day 85 and reaching a peak at day 105 before declining again and remaining constant. The concentrations of FSH increased from day 85, peaking at day 105, followed by a slow decline to day 185. Serum E2 concentrations were high at day 5 then decreased dramatically, but increased considerably at 185 days. These results are similar to those reported from European breeds.
来自同一窝的四只中国北京黑猪在5至185日龄期间，每隔20天通过放射免疫分析法测定其血清促黄体生成素（LH）、促卵泡激素（FSH）和雌激素（E2）的浓度。LH浓度在第5至25天急剧下降，随后一直保持在低水平，直到第85天再次上升，并在第105天达到峰值，之后再次下降并保持稳定。FSH浓度从第85天开始上升，在第105天达到峰值，随后缓慢下降至第185天。血清E2浓度在第5天较高，随后急剧下降，但在第185天显著升高。这些结果与欧洲品种的报道相似。
