The Next Big Thing in natural muscle supplement for horses
https://horse-feed-advice552.hexaforgey.com/posts/hoveler-pur.muskel-5-essential-amino-acids-and-numbers-that-make-it-a-real-muscle-feed
Young horses in training are laying down muscle patterns that last, so Pur.Muskel offers 20% raw protein with lysine at 0.85%. Add it into a complete ration at the light-work rate of 30–50 g per 220 lb to start.