Abstract

This Uganda Standard specifies a method for determination of the total and free tryptophan (Trp) content in feeding stuffs (e.g. complete and complementary feeds, supplementary feeds, raw materials, ingredients, and concentrates) and determination of free tryptophan in commercial pure substances and premixtures containing more than 2 % of tryptophan. It does not distinguish between D- and L-forms. (This standard will cancel and replace, upon publication of the Legal Notice, the first edition, US ISO 13904:2005 Animal feeding stuffs - Determination of tryptophan content).. This standard was published on 2022-12-13