Koong L J, Ferrell C L, Nienaber J A
J Nutr. 1985 Oct;115(10):1383-90. doi: 10.1093/jn/115.10.1383.
Although the concept of metabolic body size (kg0.75) has gained widespread use in the field of energy metabolism, its application to the growing animal has been questioned. Fasting heat production, or maintenance, rather than being a constant function of body size, has been shown to vary because of breed, sex, condition, physiological state, production level, nutrition level and environmental conditions. Data are presented to show that fasting heat production and maintenance vary with nutritional level or rate of growth in animals postweaning. Variation in these energy expenditures are related to variation in weight of metabolically active internal organs. Weights of liver and gut and fasting heat production are shown to be functions of body size and level of production. More information is needed to ascertain the primary components of energy expenditures in animals and to quantitatively relate these components to animal energy metabolism.
尽管代谢体重（千克^0.75）的概念在能量代谢领域已得到广泛应用，但其在生长动物中的应用受到了质疑。禁食产热或维持需要量并非是体重的恒定函数，已表明其会因品种、性别、状况、生理状态、生产水平、营养水平和环境条件而有所不同。本文提供的数据表明，断奶后动物的禁食产热和维持需要量会随营养水平或生长速率而变化。这些能量消耗的变化与代谢活跃内脏器官的重量变化有关。肝脏和肠道的重量以及禁食产热被证明是体重和生产水平的函数。需要更多信息来确定动物能量消耗的主要组成部分，并定量地将这些组成部分与动物能量代谢联系起来。
