Why do some hens lay red skinned eggs and some white skinned eggs?

Friends who have raised chickens in the countryside will find that the hens that grow up together, some lay white eggs, some lay red eggs, and even some lay green eggs. From a scientific point of view, it is difficult for many people in the countryside who have raised chickens to accurately say what the egg skin has to do with it. To understand this problem, it is necessary to analyze the formation of egg skin, which is the carbonic anhydrase produced by the metabolism of egg yolk and egg white in the uterus of the hen through the uterus of the hen.

Under the action, the insoluble substance formed by combining with calcium in water and blood is evenly deposited on the eggshell membrane to form a hard eggshell.

Therefore, the color of the egg skin is related to the environment in which it is formed, and this environment is related to the characteristics of the individual hen! And this environment is related to or determined by two substances, one is lutein.

The other is called eggshell porphyrins.

The former is related to the food of the hen, and the latter is related to the breed of the hen! From the analysis of the feed and food of rural chickens, that is, if there is more lutein in the food, then after digestion, the hen will have more lutein in the uterus, and when the content reaches a certain amount, then the eggs it lays are red-skinned, otherwise it is white-skinned.

But even if you don't have enough lutein, you can still lay red-skinned eggs! The color of the pigment secreted by the hen's reproductive system. Some chickens have hemoglobin in their blood.

After metabolism, it produces a substance of eggshell porphyrin, and the shell of the egg laid is a red-skinned egg. This is mainly related to the breed of chicken. Some chickens that do not produce eggshell porphyrin material produce white egg skin.

Therefore, there are two factors to determine the white skin and red skin of eggs, and some chickens that have been laying white eggs will also lay red eggs if they eat foods high in lutein for a long time.

According to the researchers' professional test data, red-skinned eggs and white-skinned eggs contain proteins, fats, and vitamins.

and other ingredients are not much different. Therefore, the nutritional value of red-skinned and white-skinned eggs is the same, but there is no difference.

Because hens have different physiques, in fact, what they eat is also different, so the color of the eggs laid may be different.

Because the hen's genes determine the color of the egg when it passes through the oviduct, the color of the egg will be different.

In fact, it may be because some hens' feed is mixed with other things, and they will lay red-skinned eggs.

Chickens are not the same, and the color of the eggs they lay is also different.

White-skinned eggs are eggs laid by Laiheng chickens.

White-skinned eggs are laid by Laiheng chickens, commonly known as foreign chickens. The color of the eggshell is mainly determined by the breed of chicken. Many parents agree that white-shell eggs are less nutritious than red-shell eggs.

However, after studying this issue, relevant experts at home and abroad have rejected this view. The main nutrients of red and white shell eggs are compared as follows:

Protein: White-shell eggs are about 0 75 higher than red-shell eggs.

Vitamins: Vitamin A, vitamin B1, and vitamin B2 in white-shell eggs are slightly higher than those in red-skinned eggs.

Fat: Red eggs are about 1 4 more expensive than white shell eggs.

Cholesterol: Red-shell eggs are about 0 8 higher than white-shell eggs.

Eggs are often consumed in our daily life, and its nutritional value is very high, containing many trace elements that our body needs.

We generally see red-skinned eggs, white-skinned eggs, and a relatively rare green-skinned egg in the market. When I was a child, my family lived in the countryside, and my family raised a group of chickens, some of the eggs laid by the big chickens in the shed were white-skinned and relatively small, and the eggs laid by some chickens were relatively large in red chains, and the yield was also higher.

At that time, people liked to buy large red-skinned eggs, and red-skinned eggs were called "foreign eggs". Nowadays, on the contrary, people like to be called "native eggs" and white eggs. As for the green-skinned eggs, they are eggs laid by black chickens, which are rarely seen in the general market, and they are also more expensive on the **.

Today we will mainly talk about the difference between white-skinned eggs and red-skinned eggs.

White-skinned eggs are laid by Laiheng chickens, which are commonly known as foreign chickens.

It is worth noting that the egg whites of white-skinned eggs are thinner than those of native eggs.

The reason why eggs have a friend of red skin and white skin is buried:

1. It depends on the color of the pigment secreted by the hen's reproductive system; 2. Depending on the type of hen, different breeds of hens contain different genes; 3. It depends on the way the hen is usually fed and the choice of feed.

Eggs are very nutritious food, rich in protein and other nutrients needed by the human body, whether it is fried eggs or boiled eggs, the taste is very good. There are many varieties of eggs on the market now, and in addition to the different brands, some eggs also have different colors. There are often two kinds of eggs, one is red-skinned eggs and the other is white-skinned eggs, these two types of eggs we often eat, so what is the difference between red-skinned eggs and white-skinned eggs?

1. Color. The most basic difference between red-skinned eggs and white-skinned eggs is the difference in surface color, the color of the eggshell depends on the last processing process of the egg in the hen's reproductive tract, that is, the pigment secreted by the uterine epithelium is evenly applied to the eggshell on the white background, and whether the egg is a red shell or a white shell mainly depends on the breed of the hen. It has nothing to do with the way the hens are fed or the choice of feed.

2. Nutritional value.

Whether it is a white-skinned egg or a red-skinned egg, the main nutrients are protein, fat, vitamins and carbohydrates and vitamins. The protein content of white-skinned eggs and red-skinned eggs is about 12%, and the fat content of red-skinned eggs is a little higher.

3. Storage time.

The storage requirements for eggs are not high, and they can be stored at room temperature or put in the refrigerator. Whereas, red-skinned eggs last longer. Because red eggshells are thicker than white eggshells, they are better able to hinder the entry of bacteria, so they are more resistant to storage.

In general, there is not much difference between white-skinned eggs and red-skinned eggs. The nutritional value is about the same, except that the fat content of red-skinned eggs is a little higher, but at the same time, it is more shelf-stable.

White-skinned eggs are laid by Laiheng chickens, commonly known as foreign chickens. The color of the eggshell is mainly determined by the breed of chicken. Many parents agree that white-shell eggs are less nutritious than red-shell eggs.

However, after studying this issue, experts at home and abroad have rejected this view. The main nutrients of red and white shell eggs are compared as follows:

Protein in the pants: White-shell eggs are about 0 75 higher than red-shell eggs.

Vitamins: Vitamin A, vitamin B1, and vitamin B2 in white-shell eggs are slightly higher than those in red-skinned eggs.

Fat: Red eggs are about 1 4 more expensive than white shell eggs.

Cholesterol: Red-shell eggs are about 0 8 higher than white-shell eggs.