Determination of macro and micro element levels in muscle tissues of cultured and wild rainbow trout, Oncorhynchus mykiss

The aim of this study was to compare the differences between cultured and wild rainbow trouts in terms of macro and micro element levels in muscle tissues. The samples obtained from rainbow trout tissues were analyzed for Na, Ca, P, K, Mg, Cr, Cu, Fe, Mn, Ni, Se and Zn levels by ICP-OES method. The levels of Na, Ca, P, K and Mg in the muscle tissues of cultured rainbow trout were found to be higher than that of wild rainbow trouts. The levels of Cr, Fe, Mn, Ni, and Se in muscle tissues of wild rainbow trout were higher and, the level of Cu was lower when compared to the cultured rainbow trout. The differences in macro and micro element levels determined between cultured and wild rainbow trout could be related to the differences in their environmental conditions and dietary element concentrations.