Özet:

This study aims to evaluate and compare the rate of eicosapentaenoic acid (20:5, EPA), docosahexaenoik acid (22:6, DHA) and ∑n3/∑n6 ratios of trout species which are important for human diet and highly preferred in Turkey. Salmo platycephalus specimens were sampled by an electro-shocker and fatty acid composition of muscle tissue was determined by a GC-MS. The findings were compared with those reported in the literature for Salmo trutta macrostigma, Salmo trutta labrax, Salmo trutta forma fario and Oncorhynchus mykiss. According to the literature and determined fatty acid compositions in S. platycephalus, the highest DHA and EPA were found in O. mykiss and S. t. macrostigma respectively. Fatty acid compositions of fish species, especially EPA and DHA, are important for fishes as well as for humans. It is known that EPA and DHA deficiencies may cause many serious illnesses as they have preventive and remedial effects. As a result, our study shows that EPA, DHA and ∑n3/∑n6 ratios of trout species are relatively higher than other fish species. Therefore consumption of trout species can be recommended.

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