RELATION OF OXYGEN UPTAKE TO BODY WEIGHT OF RATS AT DIFFERENT ENVIRONMENTAL TEMPERATURES

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Abstract
Statistical analysis of data on the oxygen consumption of rats (Sprague-Dawley strain; records covering several years of experimentation in one laboratory) indicated that the relation between oxygen uptake and body weight is not constant. Kleiber''s case for a linear relation between oxygen uptake and the 3/4 power of body weight for homeotherms in general under normal environmental conditions is not impugned by the present findings. Under abnormal experimental conditions, particularly as regards environmental temperature, the use of the analysis of covariance is recommended to best allow for the effect of body weight on oxygen uptake.