養殖マダイ脂質脂肪酸組成の産地別,養成方法別並びに天然魚との比較〔英文〕

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The fatty acid compositions of lipids in specimens of cultured red sea bream from different localities and those caught in the wild were analyzed by gas-liquid chromatography. Among the cultured fish from different localities, C16:0, C18:1 and C18:2 were present in higher amounts in lipid-poor fish than in lipid-rich fish. In contrast, C14:0, C16:0 and C20:5 showed high percentages in the latter. The contents of C14:0, C16:1, C18:1, C18:2 and C20:5 in meat from all regions except red meat were high in all cultured fish tested, as compared with those in the wild fish. The fatty acid composition of the bait affected that of the cultured fish. Fish raised on moist pellets, that contained high level of C18:0, C18:1 and C18:2, showed high percentages of these three fatty acids. Levels of C20:5, and C22:5, were high in cultured fish given sardines, which are rich in both fatty acids. Those fish pastured in marifarm contained more C16:0, C18:1 and C18:2 than fish cultivated in net cages, whereas levels of C20:5 and C22.5 were high in the latter.
日本水産學會の論文