5 Things Everyone Gets Wrong About horse feed to increase muscle mass
https://hoveler-horse-feed-kknf098.alderbrief.com/posts/5-reasons-hoveler-pur.muskel-works-for-reining-horses
Workload sets the dose: light work gets 30–50 g per 220 lb of body weight, medium 50–80 g, heavy 80–100 g. That gram-range feeding fits sport horses in regular training, at $52.99 for the 44 lb bag added to a complete ration.