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小白鼠怎样辨别雌雄

更新时间: 2020-10-08 00:00:00     

小白鼠辨别雌雄的方法:

1、观察肛门与生殖器之间的距离。雄性隔得远,雌性隔得近。

2、雄性阴茎朝头的方向突出,可挤压包皮使其露出而确认。雌性较小时可见闭合的阴道口,挤压亦可张开。

3、观察生殖器,雄鼠的睾丸常从腹腔降到阴囊内。在雌鼠阴部可见肛门,尿道口与口3个明显的腔道孔,腹部有12对明显的乳头。

关键词: 怎样 辨别 雌雄

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