... , improve the other nutrients utilization.3. Change the makeup and activity of the intestinal microflora. Keep the intestinal flora heathy, reduce ... and help the immune systems of the animals;Specification:xylanase activity≥100,000 U/g;≥50,000 U/g;≥10,000 ... , improve the other nutrients utilization.3. Change the makeup and activity of the intestinal microflora. Keep the intestinal flora heathy, reduce ...