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同一季节收集的不同体长组的鲢、鳙肌肉的生化成分,随着鱼体的增长水分含量逐渐下降,而脂肪含量则逐渐增加,蛋白质、无氮浸出物及灰分变幅不大,且与体长变化无明显的从属关系;同一体长组的鳙肌肉水分高于鲢,而脂肪含量则低于鲢,蛋白质、灰分、无氮浸出物含量差异不大。同年收集的1~+及2~+龄鲢、鳙的肌肉生化成分随着季节的延续,水分含量逐步下降,蛋白质及脂肪含量逐步上升,无氮浸出物及灰分含量变化不大;1~+龄鱼水分含量比2~+龄鱼高,蛋白质及脂肪含量则比2~+龄鱼低,其余成分含量差别不显著。
In the same season, the biochemical composition of the silver carp and the brachii muscle of different body length groups decreased gradually with the increase of the fish body, while the fat content increased gradually, while the protein, nitrogen-free extract and ash content did not change greatly, There was no obvious subordination between body length and body length. Muscle water content of the same body length group was higher than that of the silver carp, while the fat content was lower than that of the silver carp. Protein, ash content and nitrogen-free extract content were not significantly different. In the same year, the biochemical composition of muscle in 1 ~ + and 2 ~ + silver carp and bighead carp increased with the increase of seasons, the content of protein and fat gradually increased, and the content of nitrogen-free extract and ash did not change much. The water content of aged fish was higher than that of 2 ~ + age fish, but the content of protein and fat was lower than that of 2 ~ + age fish. The content of other components was not significantly different.