... 2. excellent production 3. high protein bio-availability yeast powder feed grade 1) Provide high-quality oligopeptided protein to poults, improve ... stress to the weaned animals.2) Improve palatability of feed, promote feed intake and grow up, as well as immunity.3 ... feed ,the contents of the three main limiting amino acids( methionine ,lysine and tryptophane) are all higher than those in soybean meal ...