蓝狐发情盛期输精正常妊娠时生殖激素的动态变化

Dynamic changes of reproductive hormones in normal pregnancy of blue fox during estrus insemination

生殖激素是调控动物繁殖的关键因素,探究蓝狐正常妊娠时的生殖激素水平及变化规律具有重要意义。试验对繁殖季节发情盛期输精正常妊娠,在妊娠期第1,20,35,50天的26只蓝狐进行生殖激素检测,旨在明确发情盛期输精蓝狐生殖激素,如促卵泡素(FSH)、促黄体生成素(LH)、雌二醇(E2)、孕酮(P)和催乳素(PRL)的正常水平及变化规律。结果表明:妊娠期生殖激素FSH和LH在1~20 d下降速度较快,之后基本保持在恒定水平;在整个妊娠期E2和P均呈明显的下降趋势,而PRL呈阶梯式增长趋势。

Reproductive hormones are the key factors that regulate animal reproduction,so it is crucial to explore the levels of these reproductive hormones and their changes in the blue foxes during normal pregnancy.In this study,26 blue foxes were tested for reproductive hormones on the 1 st,20 th,35 th,and 50 th days of normal pregnancy during the peak estrus insemination in the breeding season to clarify the role of reproductive hormones in the blue fox during the peak estrus insemination.The normal levels of follicle-stimulating hormone(FSH),luteinizing hormone(LH),estradiol(E2),progesterone(P),and prolactin(PRL)and their changing patterns were detected.The results of the study showed that the reproductive hormones FSH and LH declined rapidly from day 1 to day 20 during pregnancy but remained at a constant level after day 20.Estradiol and P showed a significant downward trend throughout the pregnancy,while PRL showed a step-growth trend.