Based on the kind of breed as well as other environmental factors, the average lifespan of a chicken can be anywhere between 10 and 15 years. Within 6 months of birth, the chicken actually ends up reaching maturity.
A hen can lay eggs without mating with a rooster. However, a rooster is required to fertilize the eggs and hatch the chicks. The eggs that we buy at the store are not fertilized eggs.
A hen lays about one egg a day and can yield up to 300 eggs every year based on the nutritional intake and the health of the bird. The process of creation and laying of an egg takes a total of around twenty-five 25 hours wherein the yolk of the egg travels down the hen’s oviduct where the albumen of the egg starts forming.
Once the mass is halfway through the hen’s oviduct, the membrane that encases the egg white as well as the egg yolk starts forming. After this, the shell starts developing. The shell formation is what takes the maximum amount of time (20 hours approximately) and it is made of calcium. This is the reason calcium intake is important for the egg-laying breeds. Once the egg shell is completely formed, the hen lays the egg.
The mother hen incubates her eggs for three weeks during which it is turned at least twice a day for the embryo to develop healthily. Without this, the egg yolk gets separated from the white and floats on the top. This causes pressure and kills the embryo. The egg yolk contains the nutrients required for the complete development of the baby chick during incubation. Baby chicks properly grow in a temperature of about 104 degrees and this is provided by the mother hen during the incubation process.
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