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Selenium in poultry

What is the role of Selenium in poultry nutrition?
What does selenium have to do with the vitamin E needed to feed poultry?
What role does selenium play in pancreatic health?
Does selenium play a role in the antioxidant defense system?
In the first part of this article, we want to look at the relationship between selenium and vitamin E in poultry nutrition. Before explaining this point, it is important to note that this article is for poultry and should not be used for human consumption. Because increasing selenium consumption can cause poisoning.

Selenium is an essential mineral in poultry nutrition that interacts with some elements or minerals so that high levels of copper and zinc in poultry diets interfere with the absorption of selenium. Selenium, on the other hand, works closely with vitamin E. So that the two nutrients selenium and vitamin E help each other in their tasks

How does selenium help vitamin E? Selenium helps poultry vitamin E in three ways, two of which are as follows:

A) As we know, vitamin E is a fat-soluble vitamin. Proper absorption of fat-soluble vitamins (vitamins A, D, E and K) is affected by proper absorption of fats in the diet. Therefore, any factor that can improve the absorption of fats and fat-soluble vitamins can affect the amount of vitamin E needed by the body. Researchers have found that selenium deficiency can cause pancreatic or pancreatic depletion, and as we know, the pancreas or pancreas plays an important role in digesting fats. The pancreas plays a role in digesting fats by secreting lipase. Therefore, pancreatic analysis does not lead to lipase production, and as a result, the monoglycerides that are needed for the formation of bile salts and fats are not produced, and as a result, the absorption of fat and subsequent absorption of fat-soluble vitamins is impaired. Therefore, selenium deficiency can lead to pancreatic depletion and decreased lipase production, and a decrease in the production of this enzyme will reduce digestion and absorption of fats and fat-soluble vitamins.

B) It has been shown that selenium is involved in the structure of the enzyme glutathione peroxidase. The enzyme glutathione peroxidase is one of the antioxidant enzymes that is involved in the removal of free radicals. Unfortunately, free radicals have a high aggressive ability to saturate unsaturated fatty acids in cell membranes. And as mentioned in previous articles, vitamin E plays an important role in maintaining the health of these membranes. Therefore, any factor that reduces the rate and severity of free radical invasion can affect the amount of vitamin E a bird needs. So in short, the presence of selenium in poultry can produce the right amount of glutathione peroxidase, and proper activity of this enzyme can reduce the level of free radicals and thus reduce the need for vitamin E to protect membranes. Dad.

But the interesting thing is that the cooperation between vitamin E and selenium in this case is two-way !! So that the presence of the right amount of vitamin E in the diet can also reduce the amount of selenium needed by the bird !! Vitamin E can reduce the need for selenium in poultry in at least two ways:

1- Vitamin E keeps the body’s selenium active and prevents it from being excreted.

2- Vitamin E plays a commanding role in the oxidative defense system. Therefore, the presence of appropriate amounts of vitamin E can reduce the production of hydroperoxides. Decreased hydroperoxides also reduce the intake of the enzyme glutathione peroxidase, thereby reducing the need for selenium in the body.

But another important point is that the amount of selenium needed in the diet should be adjusted by a specialist, and it is not necessary to change the level of selenium in the diet without the knowledge of the dietitian, because an increase in selenium can cause poisoning.

References :

Poultry Metabolic Diseases (Dr. Mohammad Hassanzadeh)
Scott chicken feed (Dr. Parvarza and Sadeghi)

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