Selenomethionine as a synthetic source of selenium
Selenium is an important trace element in animal feed. This trace element is added to animal feedstuffs via premixes because roughage and compound feed ingredients generally do not contain enough selenium to warrant good animal health and production.
A selenium deficit leads to inadequate performance of the antioxidant systems and decreased effectiveness of the immune system; this makes the animals more sensitive to diseases. Furthermore, selenium is important to thyroid metabolism, fertility and technical results in cattle, pigs and poultry.
Selenium is added to compound feeds in inorganic form, usually sodium selenite, and/or in organic form, such as selenised yeast. The active component in this yeast is l-selenomethionine.
In contrast to inorganic selenium, selenomethionine is actively resorbed as an amino acid and can be stored in body proteins, and therefore be stored in organs and tissues. This spare store of selenomethionine in body proteins can be accrued only if selenomethionine is absorbed as a source of selenium.
Recently, synthetic selenomethionine was launched on the market. A benefit of synthetic selenomethionine compared to selenised yeast is the consistency of the product. From research among cattle, pigs and poultry, it is clear that selenomethionine is a good source of selenium. Nuscience processes selenomethionine in premixes and mineral mixes for cattle, pigs and poultry.