Metabolic rate and saliva cortisol concentrations in socially housed adolescent guinea pigs.

A highly significant repeatability in metabolic rate was found for each analysis, although repeatability was more strongly pronounced under consideration of body mass (whole-body metabolic rate in ml O 2 /h: R = 0.54, 95% CI: 0.31 – 0.76, p < 0.001; body mass-corrected metabolic rate in ml O 2 /h/kg: R = 0.69, 95% CI: 0.48 – 0.85, p < 0.001; body mass-independent metabolic rate in ml O 2 /h statistically adjusted for body mass: R = 0.61, 95% CI: 0.37 – 0.80, p < 0.001; Fig. 2 a–c).

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