Souffrant W B, Köhler R, Matkowitz R, Gebhardt G, Schmandke H
Arch Tierernahr. 1981 Oct;31(10):675-83. doi: 10.1080/17450398109426876.
The endogenous N-quota in the chyme of the small intestines after providing modified proteins was determined with re-entrant cannulae at the end of the ileum in investigations with pigs (35 to 50 kg live weight) with the isotope dilution method. The N-pool of the test animals was labelled with 15N-glycine and 15N-leucine. The TCA-soluble fraction of the blood plasma served as criterion for the labelling level of the N-pool. The results showed a direct connection between N-intake and endogenous N in the chyme of the small intestines. With regard to N-intake, the dependence of endogenous N in the chyme of the small intestines on feed protein could be observed.
在对体重35至50千克的猪进行的研究中，采用同位素稀释法，通过回肠末端的再入式套管测定提供改良蛋白质后小肠食糜中的内源性氮配额。用15N-甘氨酸和15N-亮氨酸标记试验动物的氮库。血浆中三氯乙酸可溶性部分作为氮库标记水平的标准。结果表明，氮摄入量与小肠食糜中的内源性氮之间存在直接联系。就氮摄入量而言，可以观察到小肠食糜中的内源性氮对饲料蛋白质的依赖性。
