Objective: To compare the changes of free amino acid profile between plasma and liver after semi starvation.

目的观察比较半饥饿状态下血浆、肝脏游离氨基酸浓度的变化及其意义。

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The results showed as follows:The true amino acid digestibilities of the 9 feeds with endogenous amino acid loss measured with N-free diet methods were higher than those with starvation method.

试验结果表明：无氮日粮法测定的去盲肠鸭九种饲料氨基酸真消化率的平均值显著高于绝食法。

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