The Pros and Cons of starch and fat high energy feed

https://low-starch-feed-for-horses-hebb514.solsticebrief.com/posts/9-reasons-western-sport-at-37.99-is-real-value-for-a-working-horse

Inactivated brewer's yeast joins Vitamin E at 260 mg and biotin at 1,185 µg in a muesli mix formulated for hard-working western performance horses. The $37.99 price for 44 lb makes it an easy fit in a performance barn's rotation.