Weight Estimations For East African Mammals From Body Measurements

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Date
1995
Authors
LEE M. T
McCULLOCH J. S. G.
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Abstract
Records of simultaneous weights and standard measurements of 330 individuals of ten species of East African wild animals were analyzed to obtain simple equations for reliable estimates of liveweight from standard body measurements. For rapid field use the best equations are based on a linear regression between total body weight and heart girth. Accuracy was not significantly improved by correcting for sex, age, and body fill, or by including other measurements. These equations apply to all animals of the appropriate species and provide unbiased estimates of weight accurate in general to within 10 percent. Daily and hourly fluctuations in liveweight are of the same order of magnitude as the residual standard deviation of the equations. Because the equations based on heart girth appear to be independent of variations in stomach contents, they may provide as close an estimate of true mean liveweight as is obtained by the single spot weighing of the animal at ilie time of collection.
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East African Wildlife Journal, 20 (1), p. 84-89