Orffa Excentials

The new generation of organic selenium for animal nutrition

Selenium is an essential trace element for both animals and human. Selenium is a key nutrient in animal nutrition and is crucial for an optimal antioxidant capacity, immune function and health status. Selenium in animal diets can be supplied via raw materials or via supplemented selenium. Selenium in feedstuffs is predominantly present in the form of L-selenomethionine, the natural form of selenium in plant and animal protein.

The supplemented selenium can be categorized as organic or inorganic. Organic selenium has an important benefit compared to inorganic selenium due to the fact that selenomethionine is utilized by the body as an amino acid (in the same way as methionine) and is built into animal protein tissue. Via this metabolism, organic selenium in the form of L-selenomethionine is able to build up selenium reserves in the body, which ensures a good selenium and anti-oxidant status at all times and secures efficient transfer of selenium to offspring via placenta, milk and eggs.

Selenized yeast, the traditional way of supplementing organic selenium, has only part of its selenium in the form of L-selenomethionine and the level shows variation between products in the market.

Recently a new type of organic selenium has been introduced into the animal nutrition market and this product tackles the problem of variable concentration. The product Excential Selenium4000 consist of L-selenomethionine and is considered 100% digestible. All selenium in the product is available in the most effective organic form and ensures the most efficient selenium supply to the animal.


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