yeast powder1.high protien 2.appropriate proportion of restrictive amino acids , 3.highdigestion and absorption rate Yeast powder(Feed grade) 40%,45%,50%,55%,60%.A. Function and use1.Is a quality protein supplement ingredients, amino acid balance, may be a partial substitute for fish meal ,in order to reduce costs. 2. Rich in a variety of vitamins and carotenoids, especially rich in vitamins B, ...