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..
Specifies a method for the determination of the total vitamin A (retinol) content of animal feeding stuffs and pets food using high-performance liquid chromatography..
Specifies a method for the determination of the total vitamin E (DL - alpha- tocopherol) content of animal feeding stuffs and pets food using high-performance liquid chromatography..
Applies to the analysis of zearalenone in animal feed and feed ingredients, including barley, corn, oats, rye, wheat, soybean meal, canola (rapeseed) meal, corn gluten, dried distillers' grains, lentils, and sugar beet pulp..