孕马血清促性腺激素处理和未处理母羊多次排卵的间隔时间以及排卵与发情之间的关系。

Intervals between multiple ovulations in PMSG-treated and untreated ewes and the relationship between ovulation and oestrus.

作者信息

Whyman D, Johnson D L, Knight T W, Moore R W

出版信息

J Reprod Fertil. 1979 Mar;55(2):481-8. doi: 10.1530/jrf.0.0550481.

DOI:10.1530/jrf.0.0550481

Abstract

The timing of ovulations in 42 PMSG-treated ewes was determined by repeated endoscopy. The first ovulation occurred at a median time of 23 . 6 +/- 0 . 5 (s.e.m.) h after the onset of oestrus. The median interval between first and second ovulations was less than 1 h, and that between first and last ovulations was approximately 6 h. In 59 untreated ewes, probit regression analysis was applied to the number of ovulations which were found by endoscopy to have occurred by 23, 25 and 27 h after the onset of oestrus. The median time of first ovulation was 25 . 5 +/- 0 . 5 h after the onset of oestrus, this interval being similar in single- and twin-ovulating ewes. The median interval between twin ovulations was 1 . 2 +/- 0 . 6 h. Ovulation occurred after the end of oestrus in at least 75% of ewes.

摘要

通过反复内窥镜检查确定了42只接受孕马血清促性腺激素（PMSG）处理的母羊的排卵时间。首次排卵发生在发情开始后23.6±0.5（标准误）小时的中位数时间。第一次和第二次排卵之间的中位数间隔小于1小时，第一次和最后一次排卵之间的间隔约为6小时。对59只未处理的母羊，应用概率回归分析发情开始后23、25和27小时通过内窥镜检查发现的排卵数量。首次排卵的中位数时间为发情开始后25.5±0.5小时，单排卵和双排卵母羊的这一间隔相似。双排卵之间的中位数间隔为1.2±0.6小时。至少75%的母羊在发情结束后排卵。