母鸡不用和公鸡交配，天天在下蛋，那公鸡存在的作用是啥？_哔哩哔哩_bilibili

Name: %E6%AF%8D%E9%B8%A1%E4%B8%8D%E7%94%A8%E5%92%8C%E5%85%AC%E9%B8%A1%E4%BA%A4%E9%85%8D%EF%BC%8C%E5%A4%A9%E5%A4%A9%E5%9C%A8%E4%B8%8B%E8%9B%8B%EF%BC%8C%E9%82%A3%E5%85%AC%E9%B8%A1%E5%AD%98%E5%9C%A8%E7%9A%84%E4%BD%9C%E7%94%A8%E6%98%AF%E5%95%A5%EF%BC%9F
Uploaded: 2024-06-01T21:09:49.327Z