Zahn L, Noack R, Proll J, Augustin W
Central Institute of Nutrition in Potsdam-Rehbrücke, Academy of Sciences of the GDR.
Nahrung. 1987;31(7):739-48. doi: 10.1002/food.19870310735.
Weaned male Wistar rats were fed ad libitum besides standard pellets a normal-protein (NP), a low-protein (LP) and a high-fat (HF) diet for different periods of time. In comparison to rats on the NP diet the body weight of the LP group was significantly lower after seven weeks feeding, not after a duration of about forty weeks. No remarkable diet-related differences were detected by determination of the mean body composition and of the relative gross energy content of the body neither after seven nor forty weeks. Total gross energy intake was practically identical both for the NP and LP rats irrespective on the duration of the feeding period. A significantly lower quotient of body energy gain/total gross energy intake under the protein-restrictive LP diet after seven weeks suggests the expression of an energy dissipation obviously no longer visible after a long time feeding period.
断奶后的雄性Wistar大鼠除了标准颗粒饲料外，还随意喂食不同时间段的正常蛋白质（NP）、低蛋白质（LP）和高脂肪（HF）饮食。与喂食NP饮食的大鼠相比，LP组大鼠在喂食七周后体重显著降低，但在约四十周后体重并无显著差异。在七周和四十周后，通过测定平均身体组成和身体相对总能量含量，均未发现明显的饮食相关差异。无论喂食期长短，NP和LP大鼠的总能量摄入量实际上是相同的。七周后，在蛋白质限制的LP饮食下，身体能量增加/总能量摄入的商显著降低，这表明存在能量消耗的表现，而在长时间喂食期后这种表现明显不再可见。
