Purina has updated the line of Horseman's Edge horse feeds and reintroduced them as Purina Impact horse feed. These are the same line of products available in new packaging. With more than 85 years of research behind them, Purina High Impact horse feeds offer the following benefits: Formulated by Ph.D. Equine Nutritionists for Optimal NutritionHigh Quality Protein for Muscle MaintenanceAdded Fat for Sustainable Energy & Healthy Hair CoatVitamin & Mineral Fortification for Bone Structure and Immune System SupportQuality Ingredients that are Highly Digestible and Naturally PalatableNutritionally Balanced so No Nutritional Supplements Are NeededPurina's Impact 12: 6 + Lysine contains 12% protein with added lysine for working horses or pregnant mares; to be fed with medium to high quality hay or pasture. The 6% fat adds energy, supports healthy hair coat and performance. Pelleted. | Purina - Impact All Stages Textured Horse Feed, 12% Protein | Size 50 lbs