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Effects of Different Levels of Dietary Surfactin Supplementation on Intestinal Morphology, and Intestinal Microflora of Growth Retarded Marbled Eel Juveniles (Anguilla marmaorata)

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Title:Effects of Different Levels of Dietary Surfactin Supplementation on Intestinal Morphology, and Intestinal Microflora of Growth Retarded Marbled Eel Juveniles (Anguilla marmaorata)
Authors:Zhai, S-W.
Chen, X-H.
Wang, M-H.
Keywords:surfactin
marbled ee
intestinal morphology
intestinal microflora
LC Subject Headings:Fish culture--Israel.
Fish culture
Date Issued:2017
Abstract:This 70 day trial was conducted to investigate the effects of surfactin on intestinal morphology and intestinal microflora of growth retarded marbled eels (Anguilla marmorata). A total of six hundred and forty marbled eels at elver stage were randomly allocated to 4 treatment groups on the basis of body weight. There were 4 replicate tanks in each treatment group with 40 fish per tank. Four diets were formulated with four levels of dietary surfactin: 0, 25, 50, and 100 mg/kg, respectively. Fish were fed twice daily to apparent satiation for 70 days. Retarded marbled eels fed diets with surfactin supplementation had enhanced mucosa folds in their intestines (P<0.05). It seems that the quantity of mucosa folds increased with the increasing surfactin levels in the diet. Dietary surfactin supplementation decreased the E. coli population significantly (P<0.05), and increased the Lactobacillus population significantly (P<0.05), but had no effect on total bacterial population in intestines of marbled eels (P>0.05). Results of the present study indicate that surfactin improves intestinal function in retarded elvers of marbled eels.
Pages/Duration:7 pages
URI:http://hdl.handle.net/10524/57051
ISSN:0792-156X
Appears in Collections: Volume 69, 2017


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