How do cocks mate?

When chickens mate, the cloacal orifices of roosters and hens can face each other. Sometimes the cock's cloaca will evert into the hen's cloaca as a whole, which is similar to the state of proctoptosis, that is, it will evert. The cock excretes semen into the mother. This process is called rooster stepping on eggs in our local language.

After the egg is formed, that is, after the yolk is formed, it will be fertilized with the stored semen, then wrapped with egg white, and finally form the shell of calcium carbonate and become an egg. The mating process is short and can be completed in 5 seconds. A fertilized egg can hatch a chicken. If you soak an unfertilized egg in semen, it can't be fertilized.

Extended data:

Regardless of natural mating or artificial insemination, sperm will soon go to the fallopian tube and reach the spermatic fossa of the horn. If there are no eggs in the fallopian tube after mating (or artificial insemination), it only takes about 30 minutes for the sperm to reach the horn. When an egg enters the bell mouth, it usually takes about 15 minutes, and 3-4 sperm can enter the ovule area on the surface of the yolk, but only one sperm can combine with the egg cell to fertilize.

In fact, the number of sperm that a rooster can shoot in one mating is generally between 654.38+0.5-8 billion, and a large number of sperm are sacrificed during the journey. According to a large number of experiments, the number of sperm is not less than 65.438+0 billion, and a good fertilization rate can be achieved. It is based on this that artificial insemination improves the utilization rate of breeder cocks. When there are new and old sperm in the trumpet, the vitality of the new sperm is greater than that of the old sperm, and the chances of fertilization are more than that of the old sperm ... so the highest fertilization rate usually appears on the third day after mating.

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