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Comparison of proximate composition, amino acid and fatty acid profiles in wild, pond‐ and cage‐cultured longsnout catfish ( Leiocassis longirostris )
Author(s) -
Wang Fei,
Ma Xuzhou,
Wang Wu,
Liu Jiyuan
Publication year - 2012
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.2012.03033.x
Subject(s) - cage , catfish , polyunsaturated fatty acid , eicosapentaenoic acid , composition (language) , biology , zoology , food science , proximate , fatty acid , fish farming , chemistry , fish <actinopterygii> , fishery , biochemistry , aquaculture , linguistics , mathematics , philosophy , combinatorics
Summary The proximate composition, amino acid and fatty acid profiles in the fillets of wild, pond‐ and cage‐cultured longsnout catfish ( Leiocassis longirostris ) were determined to identify nutritional differences. Wild fish showed higher ( P < 0.05) moisture and viscerosomatic index (VSI), but lower ( P < 0.05) protein, ash and gross energy than cage‐cultured fish. Pond‐cultured fish contained lower ( P < 0.05) protein and ash contents, but higher VSI compared to cage‐cultured fish. The amino acid of glycine content was higher ( P < 0.05) in wild fish than in pond‐ and cage‐cultured fish. Most of the fatty acids had a significant difference among all fish groups. The percentages of total polyunsaturated fatty acids (∑ PUFAs) were higher ( P < 0.05) in wild and pond‐cultured fish than in cage‐cultured fish. Pond‐cultured fish had higher ( P < 0.05) ∑ n‐3 PUFAs, eicosapentaenoic acid (EPA), docosahxaenoic acid (DHA) and ∑ n‐3/∑ n‐6 PUFAs ratio than wild and cage‐cultured fish. The differences among the wild, pond‐ and cage‐cultured fish may be attributed to dietary components and environmental conditions of the fish.