Mitavite Extru Grains provide effective, safe feed-room options. Mitavite Extru Barley is an excellent source of energy and fibre, making it a popular ingredient in horse rations. When fed raw barley is poorly digested in a horse's small intestine. Rolling or steam-flaking improves digestibility a little, roasting significantly. Steam extrusion has the greatest effect, increasing digestibility to over 90% in the small intestine.