The feed must also contain an adequate balance of nutrients to meet his needs. Not all feeds are utilized equally even though they may have many of the same nutrients when analyzed. For example hay as it matures becomes less digestible, less palatable, and its overall nutrient content drops. A leather shoe may be high in protein and other nutrients, but your horse may find it less than desirable from a nutritional standpoint. All these nutrients are required for optimal growth, health, and performance.
Feeds contain nearly the entire spectrum of nutrients.
The nutrient content varies between feeds and these nutrients must be released to be utilized. Water and minerals are needed for all body functions except energy. Carbohydrates, protein, and fats are needed for energy and body structure. Vitamins are primarily involved metabolic activities within the body. Water should be offered free choice.