Create “Good Eggs” By Maintaining Layered Liver Health

A good egg benefits all mankind. According to United Nations estimates, the world population will increase from 7.9 billion in 2022 to 10 billion in 2057. Eggs are an essential source of high quality protein for humans. We believe that global egg production will continue to increase in the future. From 1990 to 2018, the global egg industry grew significantly and egg production increased by 116% (from 35.5 million tonnes to 76.8 million tonnes) (United Nations Food and Agriculture, 2018). In 2018, China produced 458 billion eggs and the United States 109 billion eggs. In terms of egg consumption in 2017, average egg consumption in China was the highest, reaching 22.7 kg, followed by Japan (19.6 kg) and Mexico (19.3 kg).

Nutritional value of eggs

The nutrition of eggs is very balanced. An egg is made up of approximately 30% egg yolk, 60% egg albumin and 10% eggshell. Each kilogram of egg dry matter contains 457 g of protein, all essential amino acids, ω-3 fatty acids and important vitamins (A, D, E, B12), minerals and antioxidants. Eggs are beneficial for pregnant women and teens during brain development due to their balanced diet. Additionally, hens can efficiently transfer dietary vitamin D to the yolk, resulting in the yolk containing both vitamin D3 and a high level of 25-hydroxy vitamin D3. So, eating eggs with a high level of 25-hydroxy vitamin D3 is very helpful for people with osteoporosis.

Egg structure

Regarding the structure of eggs, it is well known that eggshell is a kind of porous calcareous hard shell, which can protect eggs from physical damage and microbial infection. The formation of eggshells is a biomineralization process. The main nutritional factors affecting egg damage are Ca, P and VD3, while VA plays an important role in maintaining the normal structure of mucosal epithelial cells, thus indirectly affecting VD3 uptake and synthesis. The problem of egg shell quality is important in layer rearing enterprises, damage to eggs leads to considerable losses for layer production. According to statistics, unusable eggs, caused by egg shell problems, accounted for about 6-8% of the total egg production in the global egg industry, and the loss can be imagined. Egg white is a high viscosity liquid containing 11% protein and glycoproteins. The yolk contains 48% water, 33% lipids and 17% protein.

What role does the liver play?

As mentioned above, egg nutrition is very balanced. However, do you know that actually most of the nutrients in egg white and yolk come from liver synthesis and transport. Only after liver processing can nutrients from feed be transferred to eggs with egg formation. Nutrients in feed are digested and absorbed through the intestinal tract of laying hens and then transported to the liver. In the liver, these nutrients are broken down and synthesized into crude protein and lecithin needed for egg production. These substances are then transported to the ovary and oviduct by the bloodstream to assemble the eggs. The liver of laying hens is like a workshop for processing raw materials. Liver health largely determines the production performance and egg quality of laying hens.
Functions of a healthy liver

Many factors affect the production performance and egg quality of laying hens. A healthy liver can help resist various risk factors. In addition to participating in the transformation of nutrients, the liver is also an important substantial immune organ (various antibodies), the largest endocrine gland (endocrine and exocrine), the largest chemical factory (almost all plasma proteins, coagulation factors ), and the largest organ of detoxification (endogenous, exogenous toxins and drugs, pathogenic microorganisms, etc.). At present, it is known that the liver performs more than 500 physiological functions. Because the liver is involved in many physiological processes, it has become one of the most vulnerable organs in animals.

How to Create a “Good Egg”

The liver is so important for the animal body. Thus, to create “a good egg”, one must pay attention to the health of the liver of the laying hens. However, during the process of reproduction and production, the liver will be damaged in several ways. First, mycotoxins are a common problem in feeds today, and long-term accumulation of mycotoxins will harm the liver health of laying hens. Second, poor diet and poor diet management can cause liver problems. For example, energy-dense feeds can easily cause fatty liver disease in laying hens. Moreover, hepatic steatosis is also easy to form at the end of the laying stage, which leads to a decrease in liver function and production performance. Finally, epidemic factors, such as certain viruses or bacterial diseases, can lead to liver damage.

Protecting the liver will pay off

Due to the large “responsibility” of the liver, coupled with various damaging factors, once the problems occur, it will seriously affect the production performance and breeding efficiency of laying hens. Therefore, we should pay attention to the liver health of laying hens in daily feeding and management, and pay attention to daily liver health care. In maintaining liver health and protection, bile acid is a kind of preferred liver protection product.

bile acid

Bile acid is a substance of liver function, which can perform some physiological functions of liver and protect liver health. In the intestine, bile acid can emulsify fat and improve the rate of fat utilization in food. At the same time, it can also promote the absorption of fat-soluble vitamins A, D, E and K. Improving the absorption efficiency of vitamins A and D helps to stabilize the eggshell and reduce the rate breaking eggs. Bile acid can promote the absorption of fat-soluble substances such as lutein and carotene and improve the color of yolk. After entering the body, bile acid can promote fat metabolism, accelerate the transport of triglycerides into liver cells, effectively prevent fat deposition in the liver, and provide animals with more energy. In addition, bile acid can also promote the secretion, synthesis and excretion of bile, accelerate the excretion of various toxic and harmful substances, protect the liver and maintain internal environmental safety.

Moreover, bile acid is not only widely used in animal husbandry, but also plays an important role in medicine. For example, UDCA (ursodeoxycholic acid), obeticholic acid (goose deoxycholic acid) and other products that we see in the market and in the hospital are bile acids used for liver diseases such as fatty liver, cholestasis and liver fibrosis, which help patients improve the liver. enzymes and restore health.

Bile acid can protect liver and improve egg quality

In short, whether today or tomorrow, creating “a good egg” is the breeding goal pursued by all laying hen companies, and a healthy liver is the sine qua non for obtaining a good egg. Bile acid can protect liver and improve egg quality. Its acid can not only improve the health level of laying hens but also improve production performance. It is the preferred additive for laying hen farms and poultry formulas.

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