Ratio of Flesh Content and Analysis on Nutritive Composition of Muscle in Allogynogenetic Qihe Crucian Carp

Measurements have been made on the ratio of flesh content and analysis of the nutritive composition of muscle in allogynogenetic Qihe crucian carp which is endemic fish living in the Oixian county.It shows that the ratio of flesh content was 67.06%.Analysis results of the nutritive composition(%,wet) are that: the moisture of muscle is 79.49%,protein 18.08%,fat 0.95%,ash 1.16%,nonnitrogen extract 0.42%.It was found that 18 common amino acids and 8 essential amino acids for human needs in muscle.The total content of amino acids is 17.89 %(wet);the content of essential amino acids is 7.10%;the percentage of essential amino acids in total amino acids is 40.10%;essential amino acids to noessential amino acids is 0.68.By nutrition evaluating for the amino acids in muscle to human needs,the content of 4 kinds tasty amino acids is 39.57% in total amino acids;according to the amino acids score(AAS) and chemical score(CS),the first limited amino acid is cystine and methionine;the essential amino acids index(EAAI) is 85.20.The result shows that in the 11 kinds of fatty acids(FA),the percentages of the unsaturated fatty acids is significantly different to the saturated fatty acids,64.79% and 35.21% respectively.