A Determination of Live‐Weight Caloric Conversion Factors for Laboratory Mice
作者:
I. Lehr Brisbin,
期刊:
Ecology
(WILEY Available online 1970)
卷期:
Volume 51,
issue 3
页码: 541-544
ISSN:0012-9658
年代: 1970
DOI:10.2307/1935395
出版商: Ecological Society of America
数据来源: WILEY
摘要:
Regression equations are described which allow the calculation of the calories of energy consumed by a carnivore fed on whole laboratory mice (Mus musculus) given the individual weights of the mice eaten. The live—weight caloric density of mice weighing 4.8 g or less may be determined by the linear relationship: kcal/g live weight = 0.657 + 0.306 (g live body weight). Mice weighing more than 4.8 g may be considered to have a uniform live—weight caloric density of 2.14 ° 0.08 (SE) kcal/g. These conversion factors may be used for either frozen or freshly killed laboratory mice or laboratory raised Peromyscus polionotus. Fat indices (g fat/g lean dry weight) were not correlated with body weight. However, water indices (g water/g lean dry weight) decreased exponentially with increasing body weight. There was no change in the caloric value of the lean dry weight of the mice with increasing body weight.
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