THE RESPONSES OF RATS TO VARIOUS COMBINATIONS OF ENERGY AND PROTEIN .1. DIETS MADE FROM PURIFIED INGREDIENTS
THE RESPONSES OF RATS TO VARIOUS COMBINATIONS OF ENERGY AND PROTEIN .1. DIETS MADE FROM PURIFIED INGREDIENTS
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DOI：
10.1258/002367785780887392
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发表时间：
1985-01-01
影响因子：
2.4
通讯作者：
DEAN, J
中科院分区：
文献类型：
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作者：
EDWARDS, DG;PORTER, PD;DEAN, J
雄性和雌性断奶大鼠随意饲喂纯化饮食28天，代谢能水平为8.0、9.5、11.0或12.5 MJ/kg，每个能量水平的蛋白质：能量比率为1:1、1.33:1、1.67:1或2:1%:MJ/kg。主要营养素与能量和蛋白质的比例保持平衡。测量以下参数：食物摄入量、体重、体长、腹部脂肪、肝脏和肾脏重量。增加膳食能量水平会减少食物摄入量，但这种减少不足以阻止能量摄入量的增加。这反映在体重、体长、腹部脂肪以及相对肝脏和肾脏重量的增加，尤其是雄性大鼠。较高的能量摄入量比较高的蛋白质摄入量更能增加体重和食物转化效率。不同能量水平下对蛋白质摄入量的反应并不一致。没有共同的蛋白质：能量比例来获得良好的整体表现。结论是，大鼠的生长和其他特征可以通过改变膳食能量和蛋白质水平来控制。
Male and female weanling rats were fed ad libitum for 28 days on purified diets with metabolizable energy levels of 8.0, 9.5, 11.0 or 12.5 MJ/kg and protein:energy ratios of 1:1, 1.33:1, 1.67:1 or 2:1%:MJ/kg at each energy level. Major nutrients were balanced in proportion to energy and protein. The following parameters were measured: food intake, bodyweight, body length, abdominal fat, liver and kidney weights. Increasing dietary energy level reduced food intake but the reduction was not sufficient to prevent an increase in energy intake. This was reflected by increases in bodyweight, body length, abdominal fat, and relative liver and kidney weights, especially in male rats. Higher energy intake increased weight gain and food conversion efficiency to a greater extent than higher protein intake. The response to protein intake at different energy levels was not consistent. There was no common protein:energy ratio for overall good performance. It is concluded that rat growth and other features can be controlled by the alteration of dietary energy and protein levels.