Abstract
The gastrointestinal transit time was examined in male and female mice fed diets containing apple pulp (apple juice residue), defatted rice bran or cellulose. All dietary fibers used shortened the gas-trointestinal transit time significantly, but no relationship was detected between transit time and feces weight or fecal water content. When the mice were previously fed with a fiber free diet for 7 weeks, the transit time by the several test meals was dependent on the composition of test meals. However, when the mice were previously risen with the diet containing dietary fiber, the transit time by the test meal was a fected to some degree by the pre-experimental diet (previous diet). The increase of colon weight was shown in mice fed the diet containing 5% acid detergent fiber or cellulose. The changes of transit time and the increment on intestinal weight due to dietary fiber were greater in female than male mice.
