Joints, like all tissues in the body, rely on nutrients for maintenance and repair. The horse's body prioritizes its use of nutrients, first supporting vital organs-heart, lungs, liver, kidneys and brain-then giving what nutrients are left over to the rest of the anatomy. It is vitally important that the horse's diet include sufficient nutrients to make it all the way to the organs at the end of the body's hierarchy, the joints. Supplementing for...