title: Equine nutrition: changes and challenges.
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004044:Dietary Proteins; D004435:Eating; D005260:Female; D006736:Horses / Q000254:growth & development / Q000378:metabolism; D007774:Lactation; D009751:Nutritional Requirements; D011247:Pregnancy; D012106:Research; D014815:Vitamins
chemical_list: D004044:Dietary Proteins; D014815:Vitamins