Akademik Veri Yönetim Sistemi
HydroMedit 2014, 1st International Congress of Applied Ichthyology & Aquatic Environment, Volos, Yunanistan, 13 - 15 Kasım 2014, ss.477-483
This study was carried out some egg quality parameters and the fatty acids contents of
unfertilized eggs in Rainbow trout (Oncorhynchus mykiss) and Brown trout (Salmo trutta fario). Some
of the contents of saturated, monounsaturated and polyunsaturated fatty acids were measured and
evaluated between Rainbow trout and Brown trout. Total saturated and monounsaturated acids in eggs
of Oncorhynchus mykiss occurred in higher quantities than Salmo trutta fario. Miristic acid, palmitic
acid and stearic acid were main saturated fatty acids, palmiteloic acid and oleic acid were main
monounsaturated fatty acids and linoleic acid, eicosapentaenoic acid (EPA) and docosahexaenoic acid
(DHA) were main polyunsaturated fatty acids of eggs. The concentrations of saturated fatty acids
(palmitic and pentadecanoic acids), and polyunsaturated fatty acids (nervonic acid) were significantly
different (p<0.05) between fish species. Especially, the concentrations of EPA and DHA in unfertilized
eggs of both fish species determined no significant different (p>0.05). In the study, egg diameter
5.58±0.18 mm, relative eggs production per kg 771.31±88.07, absolute egg production per individual
2891.13±339.41, hatching ratio during incubation period 69.43±6.10 % of broodstocks of Rainbow
trout (Oncorhynchus mykiss) was determined. In Brown trout (Salmo trutta fario), 4.31±0.12 mm,
558.05±56.71, 1533.11±157.51 and 52.17±7.06% was determined, respectively.
From egg quality parameters and fatty acid contents, point of view, it was determined that the
values were not within the limits of the purpose in which this study was built.