Heritage 12% Textured is formulated to be fed to mares, stallions, mature pleasure (light activity) and performance (moderate & intense activity) horses. Heritage 12% Textured contains added organic zinc, copper, manganese and cobalt to develop strong bones, Biotin, for hoof health and growth. Vitamin E, to help reduce muscle stiffness and improve endurance. Plus selenium, to help support your horse’s immune system.