Purina Amplify High-Fat Horse Supplement helps hardworking horses maintain their weight with a concentrated source of calories that can be added to the daily ration. Horses with increased energy requirements can benefit from the high-calorie and easy-to-digest Amplify formula – including competition horses, horses being prepped for sale, breeding stallions, and gestating and lactating mares. Supplement your horse's diet with this high-fat, controlled-starch nugget when additional calories are needed to maintain body condition, performance, and shine.