Gluten feed is a by-product derived from the production of wheat, corn, barley, rye, maize starch, and its syrup. It constitutes a medium-protein diet with a total digestible nutrient level closely resembling that of barley. The primary sources of gluten feed include wheat, corn, barley, rye, maize, and other related grains. Wheat, specifically, is a cereal crop cultivated for food production, providing a fine white flour used in various products such as bread, pasta, and cakes.