表明内源排泄物中代谢粪氮的能值与尿的能值不同，粪中氮的能值高于尿中氮的能值。
It indicated that energy of endogenous nitrogen was different to that of uric acid, the energy of endogenous nitrogen was higher.
回肠内源氮或内源性粪氮损失是影响蛋白质表观消化率、增加动物粪氮排泄量的重要因素。
Endogenous nitrogen loss in digestive gut is an important factor affecting apparent digestibility of protein and increasing feces nitrogen excrement.
补充大豆油使可消化粗脂肪的摄取提高，而减少可消化非纤维碳水化合物，另外粪氮排出量降低。
Soybean oil treatment increased digestible crude fat intake, and decreased digestible non-fiber carbohydrate intake and fecal N output.
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