3c401 | — | L-tyrosine | - Additive compositionPowder produced by hydrolysis of keratin from poultry feathers with a minimum L-tyrosine content of 95 %
- Characterisation of the active substanceIUPAC name: (2S)-2-amino-3-(4-hydroxyphenyl)propanoic acidCAS number: 60-18-4Chemical formula: C9H11NO3
- Analytical methodsFor the determination of L-tyrosine in the feed additive:Titrimetry, European Pharmacopoeia (Ph. Eur. 6.0, method 01/2008-1161).For the determination of L-tyrosine in premixtures, compound feed and feed materials:Ion exchange chromatography method with post-column derivatisation and photometric detection: Commission Regulation (EC) No 152/2009 (Annex III, F).
| All species | — | — | — | - 1.For user safety: breathing protection, safety glasses and gloves should be worn during handling.
- 2.The instructions of use shall include a recommendation that the content of L-tyrosine does not exceed 5 g/kg complete feed with a moisture content of 12 % for food-producing animals and 15 g/kg complete feed with a moisture content of 12 % for non-food-producing animals.
| 25 February 2024 |