Techniques in energy metabolism studies and their limitations.
D000818:Animals; D001835:Body Weight; D002151:Calorimetry; D002244:Carbon / Q000032:analysis; D002417:Cattle; D009584:Nitrogen / Q000032:analysis; D009747:Nutritional Physiological Phenomena; D010101:Oxygen Consumption; D011506:Proteins / Q000378:metabolism; D012756:Sheep / Q000378:metabolism*
D011506:Proteins; D002244:Carbon; D009584:Nitrogen