Matsuo T, Shimakawa K, Ikeda H, Suzuoki Z
J Nutr Sci Vitaminol (Tokyo). 1984 Jun;30(3):255-64. doi: 10.3177/jnsv.30.255.
Self-selection from carbohydrate, protein and fat sources including essential micronutrients was studied in male Sprague-Dawley rats that were 4 weeks of age at the beginning of the experiment. During the experimental period of 14 days, the intake of carbohydrate and fat was quite constant, whereas that of protein increased gradually. The mean intake of carbohydrate, protein, and fat was 31.1 +/- 3.5%, 56.1 +/- 4.6%, and 12.8 +/- 2.8% of the total energy intake, respectively. Animals fed on a mixed diet consisting of high sucrose, consumed 65.1% of their daily energy as carbohydrate, 17.6% as protein, and 17.3% as fat. Total energy intake and body weight gain were not significantly different between the rats on self-selection and those fed on the mixed diet. These results indicate that young rats on dietary self-selection were able to gain body weight comparable to that of rats fed on the mixed diet. Body energetic status affected self-selection patterns. In rats fasted for 5 days or fed on a protein-free diet for 21 days, fat intake increased, but protein intake decreased. On the other hand, fat intake decreased in animals given a sucrose diet higher in energy content than the stock diet; these animals exhibited increased accumulation of body energy. These results indicate that dietary self-selection is closely related to nutritional and physiological body requirements.
在实验开始时为4周龄的雄性斯普拉格-道利大鼠中，研究了从包括必需微量营养素在内的碳水化合物、蛋白质和脂肪来源中进行自我选择的情况。在14天的实验期内，碳水化合物和脂肪的摄入量相当恒定，而蛋白质摄入量则逐渐增加。碳水化合物、蛋白质和脂肪的平均摄入量分别占总能量摄入的31.1±3.5%、56.1±4.6%和12.8±2.8%。以高蔗糖混合饮食喂养的动物，其每日能量的65.1%来自碳水化合物，17.6%来自蛋白质，17.3%来自脂肪。自我选择饮食的大鼠与喂食混合饮食的大鼠之间，总能量摄入和体重增加没有显著差异。这些结果表明，进行饮食自我选择的幼鼠能够获得与喂食混合饮食的大鼠相当的体重。身体能量状态影响自我选择模式。在禁食5天或无蛋白饮食喂养21天的大鼠中，脂肪摄入量增加，但蛋白质摄入量减少。另一方面，给予能量含量高于基础饮食的蔗糖饮食的动物，脂肪摄入量减少；这些动物身体能量积累增加。这些结果表明，饮食自我选择与身体的营养和生理需求密切相关。
