Swiergiel A H, Cabanac M
Univeristé Claude Bernard, Oullins, France.
Am J Physiol. 1989 Feb;256(2 Pt 2):R518-22. doi: 10.1152/ajpregu.1989.256.2.R518.
Rats were trained to feed 2 h daily. Each rat was presented during three 10-day-long alimentary periods with each of the following diets: control (C), low calorie (L), and high calorie (H). The food was placed at an ambient temperature of -15 degrees C at 16 m from a warm refuge. It was found that the rats ingested similar amounts of food, regardless of energy density of the diet, and therefore did not compensate for variations in the caloric density of a diet. This was despite the recognition of a novel diet on the first day of its presentation as manifested by a change in rats' meal pattern. L diet was eaten slowly, suggesting that it was less palatable than the C or H diets. The results suggest that the rat placed in a closed economy with only short-term access to food imposed by a hostile environment does not adjust its food intake in accordance with energy value of the food. Its momentary food intake appears to be controlled by the gustatory properties of the food.
大鼠被训练为每天进食2小时。在三个为期10天的进食期内，给每只大鼠分别提供以下每种饮食：对照饮食（C）、低热量饮食（L）和高热量饮食（H）。食物放置在距温暖庇护所16米处，环境温度为零下15摄氏度。结果发现，无论饮食的能量密度如何，大鼠摄入的食物量相似，因此并未对饮食热量密度的变化进行补偿。尽管在新饮食出现的第一天，大鼠的进食模式发生了变化，表明它们识别出了新饮食。L饮食进食速度缓慢，这表明它不如C或H饮食可口。结果表明，处于封闭环境中、只能在恶劣环境下短期获取食物的大鼠，不会根据食物的能量值来调整其食物摄入量。其瞬间食物摄入量似乎受食物味觉特性的控制。
