Watch Out: How essential amino acids for horses Is Taking Over and What to Do About It

https://high-calorie-horse-feed-wjrh371.keystonescope.com/posts/hoveler-pur.muskel-9-reasons-it-suits-western-horses

Endurance horses log serious miles on engine and topline, and Pur.Muskel supports both with 14.1 MJ/kg of digestible energy and 20% raw protein. Mix it into a complete ration at 80–100 g per 220 lb of body weight for heavy work.