What the Heck Is metabolic support horse feed?

http://gandhinagarnews.org//story/117440/with-half-of-britains-horses-overweight-bifid-launches-grainfree-lowsugar-feed-for-the-nations-gooddoers.html

Gentle horse feed for sensitive stomachs, designed to support gut comfort, hind gut health and easy nutrient absorption. A low sugar high-fibre formula with natural ingredients to help maintain settled digestion and overall health.