What the Heck Is horse feed online?

https://www.ktvo.com/online_features/press_releases/in-the-home-of-endurance-racing-bifid-brings-grain-free-gut-first-feed-to-the/article_7130a12d-40e2-5562-96eb-b15bac0d09c9.html

Liquid horse feed supplements support hydration, digestive health, and daily nutrient balance for performance horses and pasture horses alike