Evaluation of lecithin effects on gut and liver histology in juvenile Binni fish (Mesopotamichthys sharpeyi)
2019
Mohammadi, Mona | Yavari, Vahid | Mohammadiazarm, Hamid | Zakeri, Mohammad | Shirali, Solmaz
This study was conducted to examine the effects of different levels of chicken egg lecithin in diets on growth and feeding parameters, lipoprotein fractions and histological changes in gut and liver of binni juveniles (Mesopotamichthy Sharpeyi). The experimental fish with initial mean weight of 3.1 ± 0.17 g were fed to satiation 3 times a day with four experimental diets containing different levels of egg lecithin (0, 2, 4 and 6%) for 8 weeks. Fish were fed 4 and 6% chicken egg lecithin showed significantly higher final growth, specific growth rate, improved feed conversation ratio, protein efficiency and survival compared with control group. Fish were fed the diet containing 4-6% lecithin showed significantly higher high density lipoprotein (HDL) and low density lipoprotein (LDL) than fish fed 2% chicken egg lecithin and control. Fish were fed the diet containing 4-6% lecithin showed higher goblet cells and lower lipid vacuoles in anterior intestine enterocytes than control group. Also, the livers of fish were fed chicken egg lecithin showed normal structure and hepatocyte with clear central nucleus compared with control group, visually. So, it appears phospholipids (PLs) have a specific role for lipid transport and absorption. Therefore, the use of 4-6% chicken egg lecithin as PLs source in diet of juvenile binni fish for improvement growth performance is recommended.
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