WHY do domestic hens lay unfertilized eggs?

A mature hen’s egg leaves the oviduct to be fertilized. There it develops into an egg, whether or not fertilization occurs.

In the wild, a hen’s egg maturation is triggered only under certain conditions, one of which is regular visual contact with the rooster. As a result, the hen usually lays fertilized eggs. After laying a sufficient number of them, the maturation of eggs is blocked, and the bird proceeds to incubation.

Domestic hens have been selected for continuous egg laying, and their reproductive system has undergone changes. Egg maturation is no longer dependent on the presence of the rooster.

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