3b815 | — | L-selenomethionine | - Characterisation of the additiveSolid preparation of L-selenomethionine with a selenium content < 40 g/kg
- Characterisation of the active substanceOrganic selenium in form of L-selenomethionine (2-amino-4-methylselanyl-butanoic acid) from chemical synthesisChemical formula: C5H11NO2SeCAS number: 3211-76-5Crystalline powder with L-selenomethionine > 97 % andSelenium > 39 %
- Analytical methodFor the determination of L-selenomethionine in the feed additive: high performance liquid chromatography and inductively coupled plasma mass spectrometry (HPLC-ICPMS) after triple proteolytic digestion.For the determination of total selenium in the feed additive: inductively coupled plasma mass spectrometry (ICPMS), or inductively coupled plasma atomic emission spectrometry (ICP-AES).For the determination of total selenium in premixtures, compound feed and feed materials: hydride generation atomic absorption spectrometry (HGAAS) after microwave digestion (EN 16159:2012).
| All species | — | | 0,50 (total) | 1.The additive shall be incorporated into feed in the form of a premixture.2.For user safety: breathing protection, safety glasses and gloves shall be worn during handling.3.Technological additives or feed materials included in the preparation of the additive shall ensure a dusting potential < 0,2 mg selenium/m3 air.4.In the directions for use of the additive and premixtures, indicate the storage and stability conditions.5.Maximum supplementation with organic selenium:0,20 mg Se/kg of complete feed with a moisture content of 12 %.6.If the preparation contains a technological additive or feed materials for which a maximum content is set or which is subject to other restrictions, the feed additive manufacturer shall provide this information to the customers. | 28 February 2024 |