天祝白牦牛超排过程中卵泡闭锁的初步研究

目的]全面监测天祝母白牦牛超排过程中卵巢的变化情况。方法]对12头健康成年天祝母白牦牛采用CIDR+FSH+PG的超数排卵处理,并运用超声探测技术对超排过程中卵巢的变化情况做了全程监测。结果]在处理的12头牛中有5头监测到明显的卵泡闭锁现象。在超排处理前期,这5头的卵巢直径逐渐增大,到第10天达到最大值,平均(3.39±0.65)cm,之后又开始逐渐缩小;卵巢上最大卵泡的直径也在第10天达到最大值,平均13.6±2.6 mm;优势卵泡从第8天开始大量出现,到第10天达到最多,平均每个卵巢有6.5±2.3个;此后这些优势卵泡的直径逐渐缩小,在B超图上未看到黄体影像,说明这类卵泡没有正常排卵,而是最终走向了闭锁。结论]该研究为评价及优化超排处理方案提供准确可靠的依据。

Preliminary Research on the Follicular Atresia during Super Ovulation in Tianzhu White Yak

Objective] The aim of the research was to monitor the changes of ovary in female Tianzhu white yak during super ovulation completely.Method] Twelve healthy adults of female Tianzhu white yaks were treated by CIDR+FSH+PG super ovulation and the changes of ovary during super ovulation were monitored by ultrasonic detecting technology in the whole course.Result] There were obvious follicular atresia phenomena monitored in 5 yaks among the treated 12 yaks.During the early stage of super ovulation treatment,the ovary diameters of the 5 yaks increased gradually and reached the maximum on the 10th day,with average of(3.39±0.65) cm,and then reduced gradually.The diameter of the biggest follicular in ovary also reached the maximum on the 10th day,with average of(13.6±2.6) mm.The dominant folliculars started to appear massively from the 8th day and reached the most till the 10th day and each ovary had(6.5±2.3) folliculars averagely.Then the diameters of these dominant folliculars reduced gradually and the images of corpus luteum were not seen in B-scan,indicating that these folliculars did not ovulate normally,but went into atresia at last.Conclusion] The research supplied accurate and reliable basis for evaluating and optimizing super ovulation plan.