The limiting factors in the utilization of plant protein sources by fish are related to diet palatability, digestibility and essential amino acid balance.

水生动物对植物蛋白源的利用主要与适口性、消化率和必需氨基酸平衡相关。

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The index of amino acid balance were evaluated accord to deal protein of layers and broilers, The results showed the Feed-corn is a good protein source for poultry feed.

以蛋鸡和肉仔鸡理想蛋白质为模型，计算氨基酸平衡性指数，表明饲用玉米是家禽的良好蛋白源。

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Dietary electrolyte balance can influence on acid-base balance, digestibility and absorption of nutrition, the metabolism of amino acid by changing the correlative enzyme.

饲粮电解质平衡状况可影响动物机体酸碱平衡，进而影响营养物质的消化吸收率，还可通过改变一些酶的活性而影响氨基酸等养分的代谢利用。

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But when the scientists boosted levels of one amino acid, leucine, the balance of synthesis and breakdown was restored.

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