Why do hens lay eggs? including birds .

Birds lay eggs as a reproductive instinct. Succession is actually the instinct of all living beings. Birds lay eggs in order to hatch their chicks.

The little bird grows into a big bird, and continues to lay eggs, hatch eggs, generation after generation, and endlessly. In nature, it is very important for birds to lay eggs and hatch eggs, because if they lay eggs that cannot be hatched, then they cannot continue to reproduce. But we all know that not all eggs from hens can hatch chicks.

Moms and dads take an egg and shine it at the light to know if the egg can hatch chicks.

Female mammals need to mate with male mammals to reproduce, while birds do not need to mate to lay eggs. So hens don't need to find a rooster to mate before they can lay eggs.

However, if the hen does not mate with the rooster, the eggs laid are infertile eggs and cannot hatch chicks, but can only be eaten by humans. Therefore, if the chicken farm raises laying hens and is not a breeder, such hens do not need to mate.

Eggs before fertilization are called inseminate eggs and cannot hatch chicks. The mating egg is not necessarily a fertilized egg, if it cannot be fertilized due to pathological reasons or the time does not coincide, the egg is about to be laid, and the mating is only for the egg that cannot hatch chicks.

Only eggs that have been mated and successfully fertilized are useful and can hatch chicks.

Because chickens are oviparous animals.

It is not a viviparous animal, and it will not give birth to chicks in a lifetime, but what Mr. produces is eggs. Viviparous animals are born as individuals. It's like people. It's viviparous.

In addition to raw eggs, hens produce other items, as follows:1Feathers:

The feathers of the hen can be used to make products such as feather pillows and down jackets. 2.Meat:

The meat of hens is delicious and is one of the common foods of people. 3.Chicken feet and chicken tendons:

Chicken feet and chicken feet tendons are traditional delicacies in some places and can be used to make dishes such as braised chicken feet and chicken feet tendons. 4.Chicken Blood:

Chicken blood can be used to make dishes such as blood tofu, and can also be used as a Chinese medicinal herb. 5.Chicken manure:

Chicken manure is a high-quality organic fertilizer that can be used in agricultural production and plant cultivation. In addition to eggs and meat, the market demand and value of hen production items are relatively low, so in the process of breeding hens, it is necessary to select hail consumption and management according to market demand and economic benefits. At the same time, it is also necessary to pay attention to ensure the production health and life safety of hens.

The hen has been laying eggs, which is caused by the physiological characteristics of the hen, and the hen laying eggs is only one of its physiological phenomena.

Hen, a kind of poultry, has a small head, oval eyes, a pointed and hard mouth, and many hairs and dense and long, so it is also known as a round-haired hen, which starts eating late and feeds slowly. For the same chicken, there are more roosters in the sky and more hens in 21 days. Classification Grade:

Animalia - Chordates - Subphylum Vertebrates - Ornithischia - Prothoracic - Chickenformes - Pheasants, Protopheas, Domestic Chicken Species.

It's going to lay eggs.

There are two types of eggs that we eat: fertilized and unfertilized.

The former can hatch chicks, the latter cannot.

Hens laying eggs are just one of the physiological phenomena. It doesn't matter if you mate or not.

The principle of hen laying eggs:

One side of the hen's ovary degenerates and the other side of the ovary produces mature eggs through the bell at the front end of the fallopian tube into the fallopian tube, and the fertilization process occurs at the upper end of the fallopian tube (the eggs we eat are not fertilized), the fertilized egg is in the process of descending the fallopian tube, and is successively wrapped by the protein secreted by the fallopian tube wall, shell membrane and eggshell, and the egg rotates due to the movement of the tube wall muscle when moving in the fallopian tube, wrapped in a protein layer, and the protein at both ends forms a frenulum with twisting, which is the white band at both ends of the yolk that we open the raw egg and find. The eggshell is 89% 97% calcium carbonate, with a small amount of salts and organic matter. Some eggs have colors and patterns that are produced by pigment cells in the lower wall of the fallopian tubes

Eggs are only developed from egg cells, and eggs will be laid if they are not mated with a rooster, which is an egg that is not fertilized, and the egg born after mating is a fertilized egg. The eggs to be applied to the chicks must be fertilized.