What the Heck Is fibre pellet horse feed?

https://high-fibre-feed038.fotosdefrases.com/what-horse-feed-is-most-suitable-for-cob-horses

Gentle horse feed for sensitive stomachs, designed to support gut comfort, intestinal health and easy nutrient absorption. A low-starch high-fibre formula with natural ingredients to help maintain steady digestion and general wellbeing.