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通过生长试验和鱼体成分分析测定了体重３４．０～３７．３ｇ的真鲷对蛋白质和必需氨基酸（ＥＡＡ）的需要量。真鲷对蛋白质的最低需要量为０．９１ｇ／ｋｇ·ｄ，适宜需要量为１０．７ｌｇ／ｋｇ·ｄ；对必需氢基酸的适宜需要量为５．６３ｇ／ｋｇ·ｄ，１０种必需氨基酸需要量分别为：赖氨酸１．０８、蛋氨酸０．２３、苯丙氨酸０．７０、苏氨酸０．４９、亮氨酸０．９４、异亮氨酸０．５６、精氨酸０．６８、组氨酸０．２５、缬氨酸０．６１、色氨酸０．０９ｇ／ｋｇ·ｄ．在通常日投饵量为２％、２．５％和３％的情况下，饲料中蛋白质的适宜含量为５３．７％、４３％和３５．８％。
The requirements for protein and essential amino acids (EAA) of red sea breams weighing 34.0-37.3 g were determined by growth assay and fish body composition analysis. Red sea bream protein minimum requirement of 0.91g / kg · d, the appropriate needs of 10.7lg / kg · d; the required amount of essential amino acids is 5.63g / kg · d, 10 kinds of essential The amino acid requirements were: lysine 1.08, methionine 0.23, phenylalanine 0.70, threonine 0.49, leucine 0.94, isoleucine 0.56, arginine Acid 0.68, histidine 0.25, valine 0.61, and tryptophan 0.09 g / kg · d. At 2%, 2.5% and 3% daily feed levels, the appropriate dietary protein levels were 53.7%, 43% and 35.8%.