What's the best horse feed for moderate to active work?

What should I feed my horse for moderate to active work? Dylan walks us through Ultium Gastric Care, Ultium Competition, and Impact Professional Performance. Available in-store at Mackey's and online at mackeysgrows.com Free delivery on orders $49 and up in Eastern CT and surrounding towns! Ultium Gastric Care- https://mackeysgrows.com/products/purina-u... Ultium Competition- https://mackeysgrows.com/products/purina%C... Impact Professional Performance- https://mackeysgrows.com/products/purina%C...