Abstract
The rate of intestinal absorption of fatty acids given as a sole lipid source in diets is lower (especially in saturated fatty acids) than that of triglyceride. And also in the efficiency as a calorie source fatty acid is inferior to triglyceride. Therefore in this study, the nutritive efficiency of fatty acid fed with monoglyceride was investigated. The diets contained high level (20%) of lipids, constituted of oleic acid and glycerol, were given to young male rats for three months. The following results were obtained.
1) The rate of apparent intestinal absorption of lipids was improved in rats fed by fatty acid with monoglyceride or triglyceride.
2) In the efficiency of lipids after intestinal absorption, fatty acid was inferior to triglyceride and monoglyceride, but when fatty acid was fed with monoglyceride or triglyceride the efficiency was equivalent to triglyceride. However the efficiency of diet containing fatty acid with monoglyceride reduced after feeding for a long time.
3) The adverse effects, such as increasing of rat liver weight and the abnormalities in the pathological examination, were observed in the rats fed a large amount of fatty acid for a long time. This effects were not disappeared by feeding fatty acid and monoglyceride simultaneously.
