The hay I just bought is ESC 7 and Starch 2.2! It is a grass blend. No alfalfa. The hay that I was feeding was also low ESC and Starch but was an alfalfa orchard mix and protein was 16. My vet want protein under 12. He actually grew sole on the alfalfa mix so not sure alfalfa is a problem for him. I was feeding way too much sugar (sweet feed, treats,grass) No more of that! He is on 500 mg  isoxsuprine indefinitely...