• • 上一篇    下一篇

雌性大熊猫发情期尿中17β-雌二醇与孕酮水平的变化及其与配种的关系

李复东, 彭世媛,叶志勇, 何光昕, 黄祥明   

  1. 四川大学生物系
  • 出版日期:2006-07-29 发布日期:2007-09-13

CHANGES OF URINARY 17β-ESTRADIOL AND PROGESTERONE LEVELS IN FEMALE GIANT PANDAS DURING OESTRUS AND ITS RELATION WITH BREEDING

LI Fudong, PENG Shiyuan, YE Zhiyong, HE Guangxin, HUANG Xiangming   

  • Online:2006-07-29 Published:2007-09-13

摘要: 本文用放射免疫法测定了3头雌性大熊猫(Ailuropoda melanoleuca)发情期尿中17β-雌二醇与孕酶水平的变化。大熊猫的发情行为与尿中17β-雌二醇浓度的变化密切相关。发情期中, 随着孕酮水平下降的同时雌二醇水平却迅速上升并达峰值(28.2-65.5毫微克/毫克肌酐), 然后再下降到基础水平。性活动最强烈的日期发生在17β-雌二醇最高峰值的当天或峰后一天。在雌二醇峰后,尿中孕酮水平逐步升高,发情后期的孕酮平均值显著高于发情前期(P<0.01)。
本实验中,3头大熊猫均妊娠,说明自然交配或人工授精的适宜时间可根据雌性大熊猫尿中17β-雌二醇的监测予以确定。

关键词: 大熊猫, 发情期, 17β-雌二醇, 孕酮

Abstract: The changes of urinary 17β-estradiol and progesterone levels of 3 female giant pandas(Ailuropoda melanoleuca)during oestrus were determined by using radioimmunoassay.
It is clear that the variation of their estrus behaviours is closely associated with the content of 17β-estradiol.During oestrus,the decline in the level of urinary progesterone is accompanied by rapid rise of the 17β-estradiol levels up to the peak value (28.2— 65.5 mμp/mg creatinine ),and then fall to the baseline level.The date of the maximum sexual activity or natural mating occurs one day after that of the urinary estradiol peak or on that sameday.
After estradiol peak,the urinary progesterone level apparently increases,the mean value of progesterone of metestrus is significently higher(p<0.01)than that of proestrus.
The successfully fertile mating of the 3 giant pandas in this experiment indicates that the suitable time of natural mating or artificial insemination can be achieved by monitering urinary estradiol in females.
The relationship between the hormone and the mating behavior of giant pandas has baen discussed.

Key words: Giant panda (Ailuropoda melanoleuca) 17β-estradiol, Progesterone, Oestrus