SafeChoice(R) Mare & Foal is a controlled starch formula for pregnant or lactating mares, weanlings and yearlings that is nutritionally balanced with organic trace minerals to support structural development, antioxidants to support developing immune systems, Topline Balance(R) to support topline health and muscle, Nutri-Bloom Advantage(R) for easier nutrient absorption, and Digestive Shield(TM) for complete gut and immune health. You can trust SafeChoice Mare & Foal to provide whole horse nutrition to your broodmares and growing horses. | Nutrena - SafeChoice Mare and Foal Horse Feed | Size 50 lbs