Mona Mohammadi, Vahid Yavari*, Hamid Mohammadiazarm*, Mohammad Zakeri
In this study, the effects of different levels of egg lecithin in diet of juveniles (Mesopotamichthys sharpeyi) were studied. Fish with initial average weight of 3.1 ± 0.17 g were fed with different levels of egg lecithin containing 0, 2, 4 and 6% in diet for 8 weeks. Fish were fed to satiation triple daily. At the end of the period, the growth performance, feeding parameters and lipoprotein fraction were examined for assessment of fish. The results showed that FAW, WG, SGR and survival of fish were fed with 6 % egg lecithin were significantly higher than 2% egg lecithin and control group (P< 0/05). Morphometric parameters of fish fed 6% egg lecithin were significantly higher than control and other treatments (p< 0.05). Also, higher feed intake, protein intake, FE and PER were observed in 4 and 6% treatments of egg lecithin (p< 0.05). Fish fed 4 and 6 % egg lecithin had significantly lower FCR than control and other groups (p< 0.05). Also, lipoprotein fractions containing HDL and LDL had increasing trend with increasing levels of egg lecithin in diets (p<0.05). Therefore, it is recommended using 4-6% egg lecithin in diet of Mesopotamichthys sharpeyi for better growth performance.
