Smith A H
Chronic Acceleration Research Laboratory, Department of Animal Physiology, University of California, Davis, California 95616, USA.
Life Sci Space Res. 1978;16:83-8. doi: 10.1016/b978-0-08-022022-2.50016-2.
Studies by Kleiber and by Brody in the 1930's established the 3/4 power of body weight as the unit for comparison of metabolic phenomena in homoiotherms. Later Kleiber conceived of the energy requirement as a composite function, with a thermoregulatory component, proportional to heat loss, and an antigravity component that is directly proportional to body weight. Maintenance feed requirements have been measured with groups of small animals chronically exposed to several acceleration fields. Analysis of the results leads to an arithmetic relationship between the maintenance requirement and acceleration field strength: Fg = Fo+k g Where: F is the maintenance feed requirement (Fg in field of g strength, and Fo where g=0); and, g is the ambient acceleration field strength. When the equations are compared for groups of different body size, Fo tends to vary between the 0.4 and 0.5 power of body mass--and k tends to be the same, irrespective of body mass (BM). These findings tend to confirm the Kleiber concept of a composite nature of homoiotherm maintenance requirements.
20世纪30年代，克莱伯（Kleiber）和布罗迪（Brody）的研究确定，体重的3/4次幂作为恒温动物代谢现象比较的单位。后来，克莱伯将能量需求视为一种复合函数，其中包括一个与热量损失成正比的体温调节成分，以及一个与体重成正比的反重力成分。维持饲料需求是通过长期暴露在几个加速度场中的小动物群体来测量的。对结果的分析得出了维持需求与加速度场强度之间的算术关系：Fg = Fo + k g，其中：F是维持饲料需求（在g强度场中为Fg，g = 0时为Fo）；g是环境加速度场强度。当对不同体型的群体比较这些方程时，Fo往往在体重的0.4次幂到0.5次幂之间变化，而k无论体重（BM）如何往往是相同的。这些发现倾向于证实克莱伯关于恒温动物维持需求具有复合性质的概念。
