Abstract
Food intake and body weight were checked every day by changing the amount of fat in the mixed food composed from casein, fat, sugar and McCollum salt mixture and their effect on appetite was studied. On the same time, the general nutritional condition was observed. The followings were the results.
1) The group given 16% soybean oil storaged diet, food intake and body weight increase were largest and showed most vitality. And autopsy findings showed best nutritional condition.
2) On the other hand, inspite of the fact that the amount of and kind of fat was changed much, the food intake of and body increase of the rats were good. However large amount of cod liver oil showed toxic effect.
3) Even rats given no fat showed every day the average of three gram body increase and eleven gram food intake and their general and skin conditions were good. (In other words there were no essential fatty acid deficiencies.)
4) If there are sufficient amount of essential nutrient except fat in food, food intake and body increase of rats are good. That is, the amount of fat, in the certain limit, had no effect on the appetite of normal rats.
