Effect of residue-rich food on postprandial energy output in rats

Using the respiration method the values of postprandial energy output were determined in rats kept on four diets, one of which was a no-residue diet and three diets contained pectins, lignin and cellulose respectively as sources of residues. It was found that the postprandial energy output of these animals was at the lowest and practically identical level when they were given the non-residue diet or the diet with pectins. On the other hand, after administration of diets containing lignin or cellulose the energy output of the animals increased in relation to the no-residue diet by 16.0% and 12.8% respectively (p less than 0.05).