Effect of Dietary Soybean Lecithin and Cholesterol on Growth, Antioxidant Status and Fatty Acid Composition of Juvenile Swimming Crab, Portunus trituberculatus

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dc.contributor.author Sun, Peng
dc.contributor.author Jin, Min
dc.contributor.author Ding, Liyun
dc.contributor.author Lu, You
dc.contributor.author Yuan, Ye
dc.contributor.author Ma, Hongna
dc.contributor.author Zhoua, Qicun
dc.date.accessioned 2017-12-28T02:33:30Z
dc.date.available 2017-12-28T02:33:30Z
dc.date.issued 2017
dc.description.abstract An 8-week feeding trial was conducted to evaluate the effects of dietary soybean lecithin and cholesterol levels on the growth, antioxidant status and fatty acid composition in the tissues of swimming crab (Portunus trituberculatus). Eight experimental diets were formulated to contain four levels of soybean lecithin (0, 10, 20 and 40 g kg-1 of diet) and two cholesterol levels (0 and 6 g kg-1 of diet). Each diet was randomly assigned to triplicate groups of 60 swimming crabs (approximately 3.70 ± 0.03 g). The highest weight gain (WG), specific growth rate (SGR) and molting frequency (MF) were observed with crabs fed the diet supplemented with 40 g kg-1 lecithin and 6 g kg-1 cholesterol. Crabs fed the diet without lecithin and cholesterol had a lower WG and SGR as compared to those fed the other diets. Cholesterol, triglyceride and glucose concentrations in the serum were significantly influenced by soybean lecithin and cholesterol levels. Crabs fed the diets containing 40 g kg-1 lecithin with or without cholesterol supplementation had lower malondialdehyde (MDA) in the hepatopancreas as compared to those fed the other diets. Moreover, glutathione peroxidase (GPx) and lysozyme activities in the hepatopancreas were significantly affected by the dietary soybean lecithin and cholesterol levels. Highly unsaturated fatty acids (HUFAs) in the muscles were not significantly influenced by the dietary soybean lecithin and cholesterol levels. The concentrations of total HUFA in hepatopancreas were significantly influenced by the dietary soybean lecithin and cholesterol levels. In conclusion, interaction between dietary soybean lecithin and cholesterol affects growth performance, feed utilization and fatty acids in the hepatopancreas, dietary soybean lecithin and cholesterol supplementation enhance lipid transportation and metabolism
dc.format.extent 11 pages
dc.identifier.issn 0792-156X
dc.identifier.uri http://hdl.handle.net/10524/57046
dc.subject Portunus trituberculatus
dc.subject soybean lecithin
dc.subject cholesterol
dc.subject growth performance
dc.subject enzyme activities
dc.subject fatty acids
dc.subject.lcsh Fish culture--Israel.
dc.subject.lcsh Fish culture
dc.title Effect of Dietary Soybean Lecithin and Cholesterol on Growth, Antioxidant Status and Fatty Acid Composition of Juvenile Swimming Crab, Portunus trituberculatus
dc.type Article
dc.type.dcmi Text
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