Molecular Nutrition

Comparison of Nutritive Components in Muscle of Juvenile Siganus guttatus Fed with Enteromorpha prolifra and Artificial Feed

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  • Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, China Academy of Fishery Sciences, Shanghai 200090, China

Received date: 2016-12-01

  Online published: 2017-06-07

Abstract

This experiment was conducted to compared the nutritive components in muscle of juvenile Siganus guttatus fed with Enteromorpha prolifra and artificial feed. A total of 180 healthy juvenile Siganus guttatus with similar body weight were divided into 2 feed groups (Enteromorpha prolifra group and artificial feed group), and fed with Enteromorpha prolifra and artificial feed, respectively. Each group contained 3 replicates and each replicate contained 30 fish. The experiment lasted for 90 days. The results showed as follows:1) the weight gain rate, specific growth rate and relative growth rate of juvenile Siganus guttatus in Enteromorpha prolifra group were significantly lower than that in artificial feed group (P<0.05); the content of crude protein and crude ash of juvenile Siganus guttatus in Enteromorpha prolifra group was significantly higher than that in artificial feed group (P<0.05), however, the content of crude fat of juvenile Siganus guttatus in Enteromorpha prolifra group was significantly lower than that in with artificial feed group (P<0.05), the moisture content between two groups had no significant difference (P>0.05). 2) The composition of amino acids was similar between Enteromorpha prolifra group and artificial feed group. Seventeen kinds of amino acids were found in both Enteromorpha prolifera group and artificial feed group groups, and the essential amino acids index (EAAI) was 76.71 and 70.05, respectively. The component of the essential amino acids (EAA) met the Food and Agriculture Organization of the United Nations (FAO)/Word Health Organization (WHO) Standard. 3) The content of eicosapentaenoic acid (EPA)+docosahexenoic acid (DHA)and ω3 poly unsaturated fatty acids (ω3PUFA) of juvenile Siganus guttatus in Enteromorpha prolifra group was significantly higher than that in artificial feed group (P<0.05). In conclusion, the juvenile Siganus guttatus in two groups contains a variety of nutritional composition, however, considered the EAAI and the content of EPA+DHA and ω3PUFA, the nutrient of essential amino acids and major polyunsaturated fatty acids of juvenile Siganus guttatus is better in Enteromorpha prolifra group, Siganus guttatus fed with Enteromorpha prolifra is a nutritive and delicious food fish, and it can be an important aquaculture species with high edible value and health care function.

Cite this article

SONG Chao, ZHAO Feng, LIU Jianyi, WANG Yu, HUANG Xiaorong, ZHUANG Ping . Comparison of Nutritive Components in Muscle of Juvenile Siganus guttatus Fed with Enteromorpha prolifra and Artificial Feed[J]. Chinese Journal of Animal Nutrition, 2017 , 29(6) : 2047 -2056 . DOI: 10.3969/j.issn.1006-267x.2017.06.026

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