关键词: 三角鲂, 翘嘴红鲌, 杂交, 氨基酸组成, Megalobrama terminalis, Erythroculter ilishaeformis , hybridization, amino acid composition

Abstract: In the present study, we studied the differences of nutritional value in muscle of Megalobrama terminalis, Eryghroculter ilishaeformis and crossbreed F1, and evaluated the nutritional value of crossbreed F1, through comparatively analyzing the composition and composition pattern of essential amino acids in muscle of the fish. The results showed that the crude protein content of crossbreed F1 was higher than its parents, and the crude lipid content was lower than its parents; The contents of total amino acid and essential amino acid crossbreed F1 were higher than its parents; EAAI of crossbreed F1 was between its parents, and over 45% .The AAS and CS of Crossbreed F1 were exceeded 1.0 and 0.5 , respectively. The results indicated that the crossbreed F1 was a kind of high nutritional value fish, and its essential amino acid composition was more approximate to Eryghroculter ilishaeformis.