Keep your athlete active with Purina® Ultium® Senior horse feed, a High-Fat and High-Fiber Horse Formula carefully designed for fueling the unique needs of senior equine athletes.This energy dense formula is designed to help seniors get the most out of their feed while fueling performance. Its proprietary formula supports gastric health and comfort with Outlast® technology, Amplify® High-Fat Nugget to promote ideal body condition and ActivAge® technology to support immune function and metabolism. This calorie-dense, concentrated formula is low in starch & sugar but a taste your horses will still enjoy.