The results showed that the lipase activity in flounder becomes higher with the increase of the ratio of dietary energy to protein.
结果表明：随着饲料中能量蛋白比的增加，牙鲆胃肠道脂肪酶活性呈现出增强的趋势。
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However, the ratio of energy supplied by protein to total energy expenditure increased during starvation, from 38.84% at the beginning to 84.13% at the death of fish.
Under the same starch level in the diet, the amylase activity of the intestine in flounder doesn't become ruly with the changes of the ratio of dietary energy to protein.