The invention relates to a horse feed additive comprising a malt extract comprising a plurality of enzymatically active enzymes, the enzymes comprising a plurality of carbohydrases including at least one or more amylases and one or more fructanases, for use in enhancing pre-caecal digestion of carbohydrate in an equine. The feed additive may be provided in combination with a vegetable material feed and further improve digestion by increasing the energy utilisation from/improving use of the energy stored in the feed. The malt extract preferably has a high diastatic powder of 35° Lintner (94°WK) or above.The horse feed additive may be used for the prevention or treatment of an intestinal disease or food digestion associated condition selected from acidosis, colic, diarrhoea and laminitis.