Comparison of percentages of tissues and nutrients between parents and F3 offspring of Oreochromis aurea×Siniperca chuatsi

This research focused on the effect of distant hybridization to improve the flesh quality of offspring from Oreochromis aurea (♀)× Siniperca chuatsi (♂). The proportions of different tissues and percentages of nutrient components were compared between fish of the F 3 generation and O. aurea and S. chuatsi . The results showed that the proportion of flesh in F 3 hybrids was significantly lower than that in O. aurea . Crude lipid content was lower and crude protein content significantly higher in the F 3 generation. Concentrations of four kinds of amino acids important for flavour (DAA) were higher in the F 3 generation than in O. aurea , and the total DAA was significantly higher. Furthermore, the other amino acid contents and essential amino acid index of the F 3 generation were intermediate between O. aurea and S. chuatsi . We conclude that some effects of hybridization have induced flesh quality improvement.