两个不同品种的春季出生公羊羔中促黄体生成素、促卵泡生成素和睾酮变化的比较。

A comparison of the changes in LH, FSH and testosterone in spring-born ram lambs of two different breeds.

作者信息

Lafortune E, Blanc M R, Orgeur P, Pelletier J, Perreau C, Terqui M, Hochereau-de Reviers M T

出版信息

Reprod Nutr Dev (1980). 1984;24(6):947-52. doi: 10.1051/rnd:19840711.

DOI:10.1051/rnd:19840711

Abstract

LH, FSH and testosterone variations were compared during the prepubertal period in Romanov and Ile-de-France ram lambs born in the spring. Mean plasma LH levels increased significantly between the 1st and 8th week of age in the Romanov and between the 1st and 12th week of age in the Ile-de-France. At 1 month of age, the number of LH and testosterone pulses per hour was higher in Romanov than in Ile-de-France lambs. The mean plasma testosterone levels, higher in the Romanov, increased from 1 week of age onwards. Mean plasma FSH levels increased from the first neonatal week till the 8th week in the Romanov and till the 12th week in the Ile-de-France. The levels of FSH did not differ significantly between the two breeds. The higher and earlier secretion of LH and production of testosterone in the Romanov might be a cause of its better reproductive performance.

摘要

对春季出生的罗曼诺夫和法兰西岛公羊羔羊在青春期前阶段的促黄体生成素（LH）、促卵泡生成素（FSH）和睾酮变化进行了比较。罗曼诺夫羔羊在1至8周龄期间平均血浆LH水平显著升高，而法兰西岛羔羊在1至12周龄期间平均血浆LH水平显著升高。1月龄时，罗曼诺夫羔羊每小时的LH和睾酮脉冲数高于法兰西岛羔羊。罗曼诺夫羔羊的平均血浆睾酮水平较高，从1周龄起开始升高。罗曼诺夫羔羊的平均血浆FSH水平从出生后第一周持续升高至第8周，法兰西岛羔羊则持续升高至第12周。两个品种之间的FSH水平没有显著差异。罗曼诺夫羔羊LH分泌更高且更早、睾酮生成更多，这可能是其繁殖性能更好的原因。