Forages as hay or pasture make up the significant share of the daily intake of a horse. Horses are natural grass eaters with front teeth suited for biting off the grass. The molars chew and grind bulky feed, such as hay and coarse grains. A mature horse that is not working hard will eat 1.5 to 2 pounds of air-dry feed per 100 pounds of body weight. That would be 15 to 20 pounds of hay daily for a 1,000-pound horse. In Iowa, horses will require about 2 tons of hay per head per year plus summer pasture. When meeting nutrient requirements, carefully consider forage quality and nutrient content.
Navicular disease in horses is also known as Navicular syndrome. The result is the inflammation or degeneration of the navicular bone and its surrounding tissues, typically in the front feet of the horse. This disease can lead to significant or disabling lameness of a horse