VITAMIN A

A nutrient compound either C20-H3-0O or C20-H28-O found in fish-liver oils, milk, some yellow and green vegetables, and egg yolks. Maryland farrier Henry Heymering suggests 100,000 IU per day of vitamin A for an average sized horse to prevent surface cracks in new hoof horn and hoof infections. Scaly periople and chalky soles are signs of Vitamin A deficiency.