Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1186/s42523-022-00209-5
Lizenz creative commons licence
Titel (primär) Modulation of gut microbiota, blood metabolites, and disease resistance by dietary β-glucan in rainbow trout (Oncorhynchus mykiss)
Autor Menanteau-Ledouble, S.; Skov, J.; Lukassen, M.B.; Rolle-Kampczyk, U.; Haange, S.-B. ORCID logo ; Dalsgaard, I.; von Bergen, M.; Nielsen, J.L.
Quelle Animal Microbiome
Erscheinungsjahr 2022
Department iDiv; MOLSYB
Band/Volume 4
Seite von art. 358
Sprache englisch
Topic T9 Healthy Planet
Keywords Oncorhynchus mykiss; Gut microbiota; β-glucan; Prebiotic; Metabolite response
Abstract Background

Prebiotics are known to have a positive impact on fish health and growth rate, and β-glucans are among the most used prebiotics on the market. In this study, rainbow trout (Oncorhynchus mykiss) were treated with a β-1,3;1,6-glucan dietary supplement (at a dose of 0 g, 1 g, 10 g, and 50 g β-glucan per kg of feed). After 6 weeks, the effect of the β-glucan was evaluated by determining the changes in the microbiota and the blood serum metabolites in the fish. The impact of β-glucan on the immune system was evaluated through a challenge experiment with the bacterial fish pathogen Yersinia ruckeri.

The microbiota showed a significant change in terms of composition following β-glucan treatment, notably an increase in the relative abundance of members of the genus Aurantimicrobium, associated with a decreased abundance of the genera Carnobacterium and Deefgea. Furthermore, analysis of more than 200 metabolites revealed that the relative levels of 53 metabolites, in particular compounds related to phosphatidylcholines, were up- or downregulated in response to the dietary supplementation, this included the amino acid alanine that was significantly upregulated in the fish that had received the highest dose of β-glucan. Meanwhile, no strong effect could be detected on the resistance of the fish to the bacterial infection.

The present study illustrates the ability of β-glucans to modify the gut microbiota of fish, resulting in alteration of the metabolome and affecting fish health through the lipidome of rainbow trout.
dauerhafte UFZ-Verlinkung
Menanteau-Ledouble, S., Skov, J., Lukassen, M.B., Rolle-Kampczyk, U., Haange, S.-B., Dalsgaard, I., von Bergen, M., Nielsen, J.L. (2022):
Modulation of gut microbiota, blood metabolites, and disease resistance by dietary β-glucan in rainbow trout (Oncorhynchus mykiss)
Animal Microbiome 4 , art. 358 10.1186/s42523-022-00209-5