Figure 7.

WT (n = 6) and KO mice (n = 8) readily discriminated chow energy density when two novel chows were presented concurrently. A, Percent calories consumed from chow of superior energy density (3.74 kcal/g vs 3.35 kcal/g). Percent preference was calculated from chow weight per 24 h period. Percent preference = calories consumed from energy-dense chow/total calories consumed from both chows. B, KO mice consumed significantly more calories, selectively from chow of superior energy density; no differences were observed in calories consumed from chow of inferior energy density. C, KO mice consumed more total calories for the first 2 d (kcal/ g body weight). *p < 0.05 vs WT.