Influence of diet on growth in the rat.
Influence of diet on growth in the rat.
复制标题
饮食对大鼠生长的影响。
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
B. Switzer
中科院分区：
文献类型：
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作者：
J. C. Edozien;B. Switzer
给28日龄雄性Sprague道利大鼠喂食8周的等能饲料，这些饲料可随意进食或限制量进食，这些饲料含有2%、5%、10%、15%、25%或50%的乳白蛋白蛋白和5%、11.9%或21.1%的脂肪，然后处死。每周摄食量和体重，终末体重，身体水分和脂质，肝脏重量，DNA，RNA，蛋白质和脂质进行了测量。随着饲料蛋白质水平的增加，生长率逐渐增加，直到25%蛋白质，然后下降。高脂肪饮食也加速了生长，但限制能量摄入会阻碍生长。总的身体脂质与饮食中的脂肪水平直接相关。Y = β 0 + β 1X 1 + β 2X2 + B3 X3 + B4 X4（Y =增重率，X1 =日粮蛋白质水平，X2 =蛋白质效率比，X3 =食欲因子，X4 =能量/蛋白质比）的多元回归分析表明，当日粮中蛋白质含量为23%时，增重率最高，为58.8 g/周。当饮食中蛋白质水平较高时，生长率下降。
Twenty-eight-day old male Sprague Dawley rats were fed, either ad libitum or in restricted amounts, isoenergetic diets containing 2%, 5%, 10%, 15%, 25%, or 50% lactalbumin protein and 5%, 11.9%, or 21.1% fat for 8 weeks and were then killed. Weekly food consumption and body weight, terminal weight, body water and lipid, and liver weight, DNA, RNA, protein, and lipid were measured. The growth rate increased progressively with each increase in the level of dietary protein up to 25% protein and then declined. Growth was also accelerated by a high fat diet but was retarded by restriction of energy intake. Total body lipid correlated directly with the level of fat in the diet. Multiple regression analysis of the type: Y = beta0 + beta1X1 + beta2X2 + B3X3 + B4X4 where Y = rate of weight gain X1 = dietary protein level, X2 = protein efficiency ratio, X3 = appetite factor, and X4 = energy/protein ratio, showed that the maximum rate of weight gain of 58.8 g/week occurred when the diet contained 23% protein. Growth rate declined when the diet contained a higher protein level.