Imm horse diet

Hi, i am trying to find out what IS thé best diet for a imm positive horse. I am a bit confused if for example alfalfa pellets are good for these horses. Someone has expérience on which IS thé most apropriate diet for them? Tia

Well, this is a new disease to me. Googled it and it’s rather scary! MadBarn says protein which makes sense, which includes alfalfa and amino acid supplements.

https://madbarn.com/myhm-in-horses/#:~:text=Horses%20recovering%20from%20muscle%20atrophy,support%20muscle%20development%20and%20recovery.