两个品种公羊促黄体生成素（LH）和睾酮释放的季节性变化

Seasonal variation in LH and testosterone release in rams of two breeds.

作者信息

Pelletier J, Garnier D H, de Reviers M M, Terqui M, Ortavant R

出版信息

J Reprod Fertil. 1982 Mar;64(2):341-6. doi: 10.1530/jrf.0.0640341.

DOI:10.1530/jrf.0.0640341

Abstract

Blood was collected hourly for 24 h in December, February, April, June and September from Préalpes du sud and Ile-de-France rams. Coincidence of the LH and testosterone peaks was found for 96.4% of a total of 670 LH peaks and 647 testosterone peaks. The number of LH and testosterone peaks increased by 66% in Ile-de-France rams and 200% in Préalpes du Sud rams between December and June (P less than 0.001). Values in June and September were similar in Préalpes du Sud rams. There were no differences between breeds in December, but in June, Préalpes du Sud had significantly more peaks than did Ile-de-France rams (P less than 0.025). The numbers of LH and testosterone peaks increased significantly (P less than 0.05) in Préalpes du Sud rams between December and February or April. These results indicate that, although numbers of peaks of LH and testosterone increase when the animals pass from the non-breeding to the breeding season, the genotype influences the pattern of release through the year.

摘要

12月、2月、4月、6月和9月，每小时采集来自南阿尔卑斯山和法兰西岛地区公羊的血液，持续24小时。在总共670个促黄体生成素（LH）峰值和647个睾酮峰值中，发现96.4%的LH峰值和睾酮峰值出现时间吻合。在12月至6月期间，法兰西岛地区公羊的LH和睾酮峰值数量增加了66%，南阿尔卑斯山地区公羊增加了200%（P小于0.001）。南阿尔卑斯山地区公羊6月和9月的值相似。12月时两个品种之间没有差异，但在6月，南阿尔卑斯山地区公羊的峰值显著多于法兰西岛地区公羊（P小于0.025）。南阿尔卑斯山地区公羊在12月至2月或4月期间，LH和睾酮峰值数量显著增加（P小于0.05）。这些结果表明，尽管当动物从非繁殖季节进入繁殖季节时，LH和睾酮的峰值数量会增加，但基因型会影响全年的释放模式。