Meal treatment | ||||||
---|---|---|---|---|---|---|
Variable | Intact rat | Steak | Ground rat | Liquid meal | Infused ground rat | P |
Body mass (g) | 2394±341^{a} | 2316±434^{a} | 2429±192^{a} | 5240±509^{b} | 1673±275^{a} | <0.0001 |
N | 5 | 6 | 6 | 4 | 4 | |
Meal size (% of body mass) | 25.0±0.1 | 25.3±0.02 | 25.0±0.0 | 25.0±0.0 | 25.0±0.0 | 0.41 |
SMR (ml h^{-1}) | 56.6±7.8 | 56.8±8.5 | 57.5±4.4 | 111.6±7.1 | 49.4±4.5 | 0.53 |
SMR (ml h^{-1}) adjusted to 2400 g | 56.6±7.8 | 58.4±1.8 | 57.2±2.5 | 66.0±1.4 | 64.2±2.6 | 0.052 |
SMR (ml g^{-1} h^{-1}) | 0.024±0.001^{a} | 0.025±0.001^{a,b} | 0.024±0.001^{a} | 0.022±0.001^{a} | 0.031±0.003^{b} | 0.008 |
Peak V̇_{O2} (ml h^{-1}) | 963±145^{a} | 781±160^{a,b} | 681±68^{b} | 867±68^{a} | 229±24^{c} | <0.0001 |
Peak V̇_{O2} (ml h^{-1}) adjusted to 2400 g | 965±48^{a} | 797±77^{a,b} | 672±34^{b} | 433±25^{c} | 328±29^{c} | <0.0001 |
Peak V̇_{O2} (ml g^{-1} h^{-1}) | 0.402±0.021^{a} | 0.330±0.031^{a,b} | 0.278±0.013^{b} | 0.166±0.010^{c} | 0.139±0.011^{c} | <0.0001 |
Scope of peak V̇_{O2} | 16.8±0.6^{a} | 13.2±1.5^{b} | 11.7±0.7^{b} | 7.7±0.58^{c} | 4.5±0.2^{c} | <0.0001 |
Duration (days) | 8 | 6 | 6 | 6 | 6 | |
SDA (kJ) | 1259±174^{a} | 1111±203^{a,b} | 943±87^{b} | 1196±92^{a} | 289±38^{c} | <0.0001 |
SDA (kJ) adjusted to 2400 g | 1269±47^{a} | 1154±48^{a} | 938±54^{b} | 549±29^{c} | 422±18^{c} | <0.0001 |
SDA (kJ kg^{-1}) | 528±19^{a} | 480±20^{a} | 391±22^{b} | 231±12^{c} | 175±7^{c} | <0.0001 |
SDA coefficient | 26.5±1.0^{a} | 30.5±1.2^{a} | 19.5±1.1^{b} | 14.4±0.8^{c} | 8.8±1.2^{d} | <0.0001 |
Variables are defined in the text. Values are presented as means ± 1 S.E.M.
For each metabolic measure, superscript letters that differ denote significant (P<0.05) differences between means as determined from post-hoc pairwise comparisons.