Endogenous nitrogen loss in digestive gut is an important factor affecting apparent digestibility of protein and increasing feces nitrogen excrement.

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。

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The apparent digestibility coefficient of dry matter, crude protein and crude lipid decreased with the increasing of DLRM level.

随着双低菜籽粕替代量的增加，草鱼对干物质、粗蛋白质、粗脂肪的消化率逐步降低。

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The results showed that:the apparent and true digestibility of fecal crude protein were 89.67% and (96.85%);

结果表明，粪分析法所测大米粉的粗蛋白表观消化率为89.67%，真消化率为96.85%；

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