It is a by-product of wheat flour production; The rind part of the wheat grain, which forms the outermost part and is separated during flour production, is called wheat bran. Wheat bran is rich in protein and vitamins, and is at least as healthy and valuable as wheat flour. It contains much more fiber than wheat itself. It is especially rich in B group vitamins. It contains high levels of thiamine (B1), riboflavin (B2), niacin (B3) and folate (folic acid). Wheat bran protein is preferred as a feed raw material instead of some of the other grains or protein sources due to its energy and highly digestibility. It is widely used in dairy cattle, beef cattle and poultry rations and improves pellet quality.