如皋黄鸡不同产蛋时期卵巢卵泡变化规律分析

Analysis on the Change Rules of Ovarian Follicles in Rugao Yellow Chickens at Different Laying Periods

为探索不同产蛋时期如皋黄鸡卵巢卵泡变化规律,选取预产期(16周龄)、产蛋初期(20周龄)、产蛋高峰期(27周龄)、产蛋末期(64周龄)如皋黄鸡蛋鸡,对输卵管、卵巢重量、等级前卵泡数进行统计,同时卵巢进行组织切片HE染色后对原始、初级、次级卵泡进行了观察和测量统计,对不同阶段卵泡的数量变化进行了比较分析。结果表明:随产蛋时期的推进,卵巢、输卵管重呈上升趋势,4种等级前卵泡数量在产蛋高峰期达最高值;次级卵泡数量在预产期最高,不同直径的次级卵泡数量在产蛋期进程中变化规律有所不同;此外,初级卵泡平均直径在不同产蛋时期亦有差异。

In order to explore the change rules of ovarian follicles in Rugao yellow chickens at different laying periods,by selecting the Rugao yellow chickens at the prelaying period(16 wk of age),the early laying period(20 wk of age),peak egg-laying period(27 wk of age),and the telophase of laying(64 wk of age),the statistics of the weight of oviduct,the ovarian weight,and the number of pre-hierarchical follicles were carried out.At the same time,the original,primary and secondary follicles were observed and measured after the tissue section and HE staining of ovary,and the number changes of follicles at different stages were compared and analyzed.The results showed that the weight of ovary and fallopian tube showed an increasing trend with the development of laying period,and the number of four kinds of pre-hierarchical follicles reached the highest value at the peak egg-laying period.The number of the secondary follicles was the highest in the prelaying period,and the number of the secondary follicles with different diameters varied in the course of laying period.In addition,the average diameter of the primary follicle was also different at different laying periods.