皖西白鹅睾丸胚后发育的组织学研究

Histology of post embryonic development of testis on Wanxi White Geese

试验取 1 ,1 5,30 ,60 ,1 2 0 ,1 60 ,2 0 0 ,2 4 0 ,360 ,540共 1 0个日龄组的皖西白鹅的睾丸做胚后发育的形态学研究。发现皖西白鹅性成熟较晚 ,在 2 0 0日龄组的睾丸内才有精子出现 ,睾丸的生精过程分 4期 :① 1～ 60日龄为精原细胞增殖期 ;② 1 2 0日龄左右为初级精母细胞增殖期 ;③1 60日龄左右为次级精母细胞增殖期 ;④ 2 0 0～ 2 4 0日龄为精子形成期。至 540日龄仍保持有旺盛的生精功能。构成附睾区的睾丸旁导管系统有 4种管道 :①睾丸网 :腔大壁薄 ,腔面不规则 ;②睾丸输出小管 :管腔较大 ,富含皱襞和纤毛 ;③附睾小管 :管径最小 ,上皮有纤毛 ;④附睾管 :切面最少 ,管腔圆整。

The morphological characteristics of post embryonic testis were studied in 1,15,30,60,120,160,200,240,360 and 540 days old of Wanxi White Geese.The results showed that Wanxi White Geese had a later sexual maturity,with spermatogenesis in testis at 200 days old.The spermioteleosis of testis were separated into four period:(1)spermatogonia proliferation period(1～60 days old);(2)primary spermatocyte proliferation period(120 days old);(3)secondary spermatocyte proliferation period(160 days old)and(4)spermiogenesis period(200～240 days old).The testis still had the function of spermiogenesis at 540 days old.The juxta testicular duct system was consisted of four ductus:(1)retetestis with the big and irregular cavity;(2)ductuli efferentes testis with plicae and cilia;(3)ductuli epididymis with least and pilus on the epidermis and(4)circular ductus epididymidis with least cutaway.