Effects of dietary supplementation of fructooligosaccharide on growth performance, body composition, intestinal enzymes activities and histology of blunt snout bream (Megalobrama amblycephala) fingerlings

文献类型: 外文期刊

第一作者: Wu, Y.

作者: Wu, Y.;Liu, W. -B.;Xu, W. -N.;Li, X. -F.;Jiang, G. -Z.;Li, H. -Y.;He, J. -X.

作者机构:

关键词: blunt snout bream;body composition;fructooligosaccharide;growth performance;histology;intestinal enzymes activities

期刊名称:AQUACULTURE NUTRITION ( 影响因子:3.497; 五年影响因子:3.78 )

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收录情况: SCI

摘要: A feeding trial was conducted to investigate the effects of dietary fructooligosaccharide (FOS) on growth performance, body composition, intestinal enzymes activities and histology of fingerling Megalobrama amblycephala. A total of 1200 fish (1.42 +/- 0.01g) were fed diets containing graded levels of FOS (0, 0.5, 1, 2, 4 and 8gkg(-1) diet) for 8weeks in a recirculating system indoor. The weight gain, specific growth rate (SGR) and survival rate were all improved in dietary supplementation of FOS fed fish. Increasing FOS levels resulted in both higher whole-body lipid and lower moisture contents, whereas ash and protein contents showed no significant differences among all the treatments. Intestinal amylase, protease, Na+, K+-ATPase, alkaline phosphatase, -glutamyl transpeptidase and creatine kinase activities all increased with dietary FOS levels up to 4gkg(-1) (P<0.05). Transmission electron microscopy analysis indicated that microvilli length in the mid-intestine was significantly increased with increased dietary FOS levels (P<0.05). In conclusion, dietary supplementation of FOS could confer benefits on growth performance, intestinal digestive and absorptive ability, histology of fingerling Megalobrama amblycephala.

分类号: Q17

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