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Table 1.

Weanling sex, fasting duration, mass, endogenous glucose production and glucose cycle activity % change in mass for all seals during early and late fasting periods

Early fasting
Late fasting
SealSexFasting durationMassPlasma [glucose]EGPGCApGCAFasting durationMassPlasma [glucose]EGPGCApGCAChange in mass (%)
20 120 181.0 2.14 -0.045 -2.1 60 98 152.0 2.14 0.060 2.8 18.3 
20 105 144.0 2.42 0.205 8.5 56 88 154.7 2.19 0.475 21.7 16.2 
17 127 164.3 2.83 0.111 3.9 51 106 135.8 2.09 16.5 
16 87 143.0 3.42 0.360 10.5 52 71 135.0 2.25 0.317 14.1 18.4 
16 129 159.3 2.16 0.372 17.3 49 105 138.0 2.16 0.471 21.8 18.6 
12 111 153.8 3.18 0.680 21.4 37 91 145.8 2.43 0.002 0.1 18.0 
14 83 137.0 3.75 0.764 20.4        
14 91 131.5 3.56 0.662 18.6        
19 95 168.7 1.91 0.270 14.2        
10 19 89 161.7 2.62 0.234 8.9        
Mean  17 104 154.4 2.80 0.361 12.2 51 93 143.5 2.21 0.221 10.1 17.7 
s.e.m.  2.8 17.2 15.5 0.65 0.265 7.6 7.8 13.0 8.5 0.12 0.228 10.4 1.0 
Early fasting
Late fasting
SealSexFasting durationMassPlasma [glucose]EGPGCApGCAFasting durationMassPlasma [glucose]EGPGCApGCAChange in mass (%)
20 120 181.0 2.14 -0.045 -2.1 60 98 152.0 2.14 0.060 2.8 18.3 
20 105 144.0 2.42 0.205 8.5 56 88 154.7 2.19 0.475 21.7 16.2 
17 127 164.3 2.83 0.111 3.9 51 106 135.8 2.09 16.5 
16 87 143.0 3.42 0.360 10.5 52 71 135.0 2.25 0.317 14.1 18.4 
16 129 159.3 2.16 0.372 17.3 49 105 138.0 2.16 0.471 21.8 18.6 
12 111 153.8 3.18 0.680 21.4 37 91 145.8 2.43 0.002 0.1 18.0 
14 83 137.0 3.75 0.764 20.4        
14 91 131.5 3.56 0.662 18.6        
19 95 168.7 1.91 0.270 14.2        
10 19 89 161.7 2.62 0.234 8.9        
Mean  17 104 154.4 2.80 0.361 12.2 51 93 143.5 2.21 0.221 10.1 17.7 
s.e.m.  2.8 17.2 15.5 0.65 0.265 7.6 7.8 13.0 8.5 0.12 0.228 10.4 1.0 

Fasting duration, days; mass, kg; plasma [glucose] (mg dl-1);endogenous glucose production (EGP), mg glucose kg-1min-1; glucose cycle activity (GCA), mg glucose kg-1min-1; pGCA, glucose cycle activity relative to glucose production(%).

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