Title: Oral administration of<i>Escherichia coli</i>lipopolysaccharide enhances the immune system of striped catfish,<i>Pangasianodon hypophthalmus</i>(Sauvage)
Abstract: Aquaculture ResearchVolume 47, Issue 4 p. 1299-1308 Original Article Oral administration of Escherichia coli lipopolysaccharide enhances the immune system of striped catfish, Pangasianodon hypophthalmus (Sauvage) Bui Thi Bich Hang, Corresponding Author Bui Thi Bich Hang Research Unit in Environmental and Evolutionary Biology, University of Namur (FUNDP), Namur, Belgium College of Aquaculture and Fisheries, Cantho University, Cantho city, VietnamCorrespondence: B T Bich Hang, Research Unit in Environmental and Evolutionary Biology, University of Namur, rue de Bruxelles 61, Namur B-5000, Belgium. E-mail: [email protected]Search for more papers by this authorPhuong Thanh Nguyen, Phuong Thanh Nguyen College of Aquaculture and Fisheries, Cantho University, Cantho city, VietnamSearch for more papers by this authorPatrick Kestemont, Patrick Kestemont Research Unit in Environmental and Evolutionary Biology, University of Namur (FUNDP), Namur, BelgiumSearch for more papers by this author Bui Thi Bich Hang, Corresponding Author Bui Thi Bich Hang Research Unit in Environmental and Evolutionary Biology, University of Namur (FUNDP), Namur, Belgium College of Aquaculture and Fisheries, Cantho University, Cantho city, VietnamCorrespondence: B T Bich Hang, Research Unit in Environmental and Evolutionary Biology, University of Namur, rue de Bruxelles 61, Namur B-5000, Belgium. E-mail: [email protected]Search for more papers by this authorPhuong Thanh Nguyen, Phuong Thanh Nguyen College of Aquaculture and Fisheries, Cantho University, Cantho city, VietnamSearch for more papers by this authorPatrick Kestemont, Patrick Kestemont Research Unit in Environmental and Evolutionary Biology, University of Namur (FUNDP), Namur, BelgiumSearch for more papers by this author First published: 26 September 2014 https://doi.org/10.1111/are.12589Citations: 7Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract Lipopolysaccharide (LPS), a component of Gram negative bacteria, was reported as important immunostimulant for fish. In this study, striped catfish were fed diets containing different Escherichia coli LPS concentrations (0%, 0.01% and 0.05%) for 2 weeks and then fed control feed (0% LPS) for 4 weeks. Plasma cortisol and glucose were rather low and did not differ significantly among treatments (P > 0.05). The respiratory burst activity, lysozyme, complement, total of antibody as well as mortality in fish challenged with Edwardsiella ictaluri were recorded every 2 weeks (W2, W4 and W6). The lysozyme activity significantly increased in fish treated with LPS (P < 0.05) in W2, W4 and W6. The highest values of respiratory burst activity were observed at week 4 in fish fed 0.01% LPS. There were significant differences in total of antibody between fish fed LPS (0.01%) and control in W2, W4. The challenge test with Edwardsiella ictaluri showed that fish fed 0.01% LPS had lower cumulative mortality (40%, 33% and 42%) compared with the fish fed 0.05% LPS (50%, 40% and 47%) and control fish (40%, 57% and 53%) in the three difference sampling times respectively. These results suggest that feed supplemented with 0.01% LPS could enhance immunity of striped catfish after 2 weeks of oral administration and fish could be protected against bacterial infection during the following 4 weeks. Citing Literature Volume47, Issue4April 2016Pages 1299-1308 RelatedInformation