What the Heck Is low starch laminitis feed?

http://news.usfinancialnewstoday.com/story/465406/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 efficient nutrient uptake. A low-starch fiber-rich formula with naturally sourced ingredients to help maintain calm digestion and overall wellbeing.