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Table 1.

Body mass, meal size, standard metabolic rate (SMR) and post-feeding metabolic measures of peak oxygen consumption, scope of peak, duration,specific dynamic action (SDA) and SDA coefficient of Gila monsters in response to three feeding treatments

VariableFed eggFed ratFed rat under anesthesiaFP
Body mass (g) 460±46 480±20 491±34 0.20 0.822 
Meal size (g) 46.2±4.6 48.0±2.0 49.1±3.4 0.18 0.840 
SMR (ml O2 h—111.8±1.4 12.0±1.1 11.0±0.9 1.08 0.366 
SMR (ml O2 g—1 h—10.026±0.002 0.025±0.002 0.022±0.001 1.14 0.347 
SMR (ml CO2 h—19.44±1.04 9.12±0.77 8.77±0.76 1.79 0.202 
SMR (ml CO2 g—1 h—10.021±0.001 0.019±0.001 0.018±0.001 1.98 0.172 
Peak O2 (ml h—146.5±4.2 56.4±3.9 54.2±4.9 1.84 0.195 
Peak O2 (ml g—1 h—10.103±0.007 0.117±0.006 0.110±0.005 1.63 0.229 
Scope (peak O2/SMR) 4.03±0.24a 4.80±0.24b 4.90±0.09b 5.49 0.016 
RER(CO2/O20.707±0.019 0.726±0.027 0.762±0.031 1.13 0.349 
Duration (days)   
SDA (kJ) 43.2±4.4a 59.9±5.2b 55.4±8.0a,b 3.78 0.048 
SDA (kJ kg—194.0±2.8a 124±7b 111±9a,b 4.97 0.022 
SDA coefficient (%) 13.1±0.4a 18.2±1.1b 16.2±1.3a,b 6.72 0.008 
VariableFed eggFed ratFed rat under anesthesiaFP
Body mass (g) 460±46 480±20 491±34 0.20 0.822 
Meal size (g) 46.2±4.6 48.0±2.0 49.1±3.4 0.18 0.840 
SMR (ml O2 h—111.8±1.4 12.0±1.1 11.0±0.9 1.08 0.366 
SMR (ml O2 g—1 h—10.026±0.002 0.025±0.002 0.022±0.001 1.14 0.347 
SMR (ml CO2 h—19.44±1.04 9.12±0.77 8.77±0.76 1.79 0.202 
SMR (ml CO2 g—1 h—10.021±0.001 0.019±0.001 0.018±0.001 1.98 0.172 
Peak O2 (ml h—146.5±4.2 56.4±3.9 54.2±4.9 1.84 0.195 
Peak O2 (ml g—1 h—10.103±0.007 0.117±0.006 0.110±0.005 1.63 0.229 
Scope (peak O2/SMR) 4.03±0.24a 4.80±0.24b 4.90±0.09b 5.49 0.016 
RER(CO2/O20.707±0.019 0.726±0.027 0.762±0.031 1.13 0.349 
Duration (days)   
SDA (kJ) 43.2±4.4a 59.9±5.2b 55.4±8.0a,b 3.78 0.048 
SDA (kJ kg—194.0±2.8a 124±7b 111±9a,b 4.97 0.022 
SDA coefficient (%) 13.1±0.4a 18.2±1.1b 16.2±1.3a,b 6.72 0.008 

O2, rate of oxygen consumption

Values are means ± s.e.m. (N=6 animals/treatment). Different letters represent significantly different means (see text for details)

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