Comparison of Body Compositions and Fatty Acid Profiles of Farmed and Wild Rainbow Trout (Oncorhynchus mykiss)

Abstract

In this study, body composition and fatty acid profiles were compared between farmed and wild rainbow trout; the latter escaped from farms to nature and fed natural food. The total crude protein, lipid, ash, dry matter and fatty acid composition of fish meat were determined. The results indicated that the wild rainbow trout contained a significant higher amount of crude protein, ash, dry matter, total saturated fatty acids (SFA) and eicosapentaenoic acid (EPA); and a lower amount of lipid, total monounsaturated fatty acids (MUFA), total polyunsaturated fatty acids (PUFA), and docosahexaenoic acid (DHA) compared with the farmed rainbow trout.