The correlation between the dietary CP level and the VBN and AN contents in thececal digesta, respectively, was not significant(P>0.05).
饲粮CP水平分别与盲肠内容物中VBN和AN含量之间的相关关系不显著（P＞0．05）。
2
Collection of digesta is the main factor influencing the representative of metabolizable energy content of feedstuffs estimated with in vitro method.
食糜的采集是离体法测定代谢能值的方法中影响其代表性的主要因素。
3
The rate of passage of digesta through the digestive tract, which is best described by the mean retention time, is an important measure of gut function.