Hoffmann L, Klein M, Schiemann R
Forschungszentrum für Tierproduktion Dummerstorf-Rostock, Akademie der Landwirtschaftswissenschaften der DDR.
Arch Tierernahr. 1990 Jul;40(7):583-93. doi: 10.1080/17450399009428408.
In two experiments with male Wistar rats energy metabolism was measured on the feeding level of maintenance in the course of growth and in various adult periods after the application of feed mixtures with various protein-carbohydrate quotas (10, 40 and 70% crude protein) according to two different feeding regimes. While there was a change of protein levels between the animal groups in periods 1 to 3 and 8 to 10 from one period to the other, the protein levels in periods 4 to 7 and 11 to 13 remained the same for each animal group. Irrespective of the feeding regime, a dependence of the energy maintenance requirement on the nutrients according to the expected values was measured, which result from the different efficiency of ATP synthesis in the oxidative degradation of the nutrients. On an average of the periods maintenance requirement amounted to 357 +/- 21, 399 +/- 16 and 443 +/- 28 kJ/kg LW0.75.d (experiment 1) and 350 +/- 29, 383 +/- 34 and 442 +/- 30 kJ/kg LW0.75.d (experiment 2) for 10, 40 and 70% crude protein in the feed. The relation between the maintenance requirement values was 100:112:124 and 100:109:126. This contrasts with the relative expected values of 100:108:115 and 100:109:116.
在两项针对雄性Wistar大鼠的实验中，根据两种不同的喂养方案，在生长过程以及不同成年阶段，以维持喂养水平测定了能量代谢情况，实验使用了具有不同蛋白质 - 碳水化合物配额（10%、40%和70%粗蛋白）的饲料混合物。在第1至3阶段和第8至10阶段，动物组之间的蛋白质水平从一个阶段到另一个阶段有所变化，而在第4至7阶段和第11至13阶段，每个动物组的蛋白质水平保持不变。无论喂养方案如何，均测定出能量维持需求对营养素的依赖性符合预期值，这是由营养素氧化降解过程中ATP合成效率不同所致。在各阶段的平均值中，对于饲料中含有10%、40%和70%粗蛋白的情况，维持需求量分别为357±21、399±16和443±28 kJ/kg LW0.75·d（实验1）以及350±29、383±34和442±30 kJ/kg LW0.75·d（实验2）。维持需求值之间的关系为100:112:124和100:109:126。这与相对预期值100:108:115和100:109:116形成对比。
