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小熊猫妊娠期粪便中孕酮、雌二醇的水平变化

李春,魏辅文,胡锦矗   

  1. 华东师范大学生命科学学院,上海
  • 出版日期:2006-02-24 发布日期:2008-07-07

Fecal Progesterone and Estradiol Levels during Gestation and the Correlation to Parturition in Female Red Pandas (Ailurus fulgens)

LI Chun,WEI Fuwen,HU Jinchu   

  • Online:2006-02-24 Published:2008-07-07

摘要: 2000年3-8月在成都动物园和成都大熊猫繁育研究基地,用放射免疫分析法测定了6只雌性小熊猫粪样中孕酮(P)和雌二醇(E2)的水平变化,同时对其繁殖行为进行了观察。研究结果表明,交配后的雌体粪样中E2浓度下降至基础水平,P浓度在30 d后上升至150 ng/g以上;怀孕雌体在妊娠期粪样中P水平在200 ng/g以上,P峰值可以达500 ng/g以上;假妊娠者粪样中P水平一般不超过150 ng/g, P峰值在200 ng/g以下;雌体产前半个月孕酮迅速下降,E2缓慢上升,产后P保持在基础水平。这意味着可通过测定粪便中P水平进行早孕诊断、产期预测和真很妊娠判断。根据行为观察和粪样激素分析可知,雌兽妊娠期为123-128 d (x=124, N二5),产仔率为1.8/胎 (N=5)。

关键词: 小熊猫, 粪便, 雌二醇, 孕酮, 妊娠, 假孕

Abstract: This paper analyzed with the method of radioimmunoassays the fecal estradiol and progesterone concentrations and investigated the mating activity of six female red pandas (Ailurus fulgens) in Chengdu Zoo and Chengdu Research Base of Giant Panda From March to August 2000. The findings indicate that fecal estradiol (E2) concentration of fertilized females declined to a basal level and fecal progesterone (P) concentration rose to 150ng/g after 30 days of pregnancy.. During pregnancy, fecal P concentration was more than 200ng/g and the peak of P concentration reaches over more than 500ng/g. Fecal P concentration of pseudo-pregnant female is normally no more than 150ng/g and the peak of P concentration is below 200ng/g. Fecal P concentration of the females decreases quickly half a month before bearing and maintains a basal level after parturition, while E2 increases slowly. The investigation and analysis show that the early diagnoses of pregnancy and pseudo-pregnancy, as well as forecasting of parturition, can be made by measuring the P and E2 concentrations in female red panda feces. Based on the behavioral observations and fecal steroid analysis, we have also found that the gestation period of red pandas is 123-128 days (x=124, n=5) and the bearing rate is 1.8/fetus (n=5).

Key words: Estradiol, Faeces, Progesterone, Pregnancy, Pseudo-pregnancy, Red pandas (Ailurus fulgens)