Effects of dietary supplementation of lignocellulose-derived cello-oligosaccharides on growth performance, antioxidant capacity, immune response, and intestinal microbiota in rainbow trout (Oncorhynchus mykiss)Show others and affiliations
2024 (English)In: Aquaculture, ISSN 0044-8486, E-ISSN 1873-5622, Vol. 578, article id 740002Article in journal (Refereed) Published
Abstract [en]
This study evaluated the prebiotic potential of cello-oligosaccharides (COS) produced from birch (Betula pendula), an under-utilised lignocellulosic source from the forestry industry, on growth performance, mucosal immunity, gut microbiota composition, and antioxidant capacity of juvenile rainbow trout (Oncorhynchus mykiss). In a 45-day trial, the fish were fed with diets containing 0%, 0.1%, 0.5% and 1.5% COS, while a diet containing fructo-oligosaccharides (0.5% FOS) was used as a positive control. Fish fed with the 0.5% and 1.5% COS diets showed significantly (P < 0.05) higher abundance of Ruminococcaceae, Bacillaceae and Lactobacillaceae, in the faecal microbiota. The COS diets also induced higher antioxidant capacity in the gut and serum, but there were no treatment effects (P > 0.05) on growth of rainbow trout. Gene expression analysis of the intestine showed significant elevation (P < 0.05) in expression of complement (c3 and c-type lectin) and receptor (tlr2) genes of the innate immune system in COS-fed fish. However, for cytokine and adaptive immune genes, no significant differences (P > 0.05) in gene transcripts were observed between the COS/FOS diets with the control diet. These results suggest that dietary cello-oligosaccharides can be a useful feed supplement for rainbow trout, which can modulate intestinal microbial communities, innate immune response and antioxidant capacity of the host.
Place, publisher, year, edition, pages
Elsevier B.V. , 2024. Vol. 578, article id 740002
Keywords [en]
Cello-oligosaccharides, Forest waste, Gut immunity, Microbiota, Oxidative stress, Rainbow trout
National Category
Zoology Other Biological Topics
Research subject
Biochemical Process Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-101629DOI: 10.1016/j.aquaculture.2023.740002ISI: 001080089700001Scopus ID: 2-s2.0-85171568240OAI: oai:DiVA.org:ltu-101629DiVA, id: diva2:1804156
Funder
Vinnova, 2017-02691Swedish Research Council FormasSwedish Energy Agency
Note
Validerad;2023;Nivå 2;2023-10-11 (joosat);
CC BY 4.0 License
2023-10-112023-10-112024-12-16Bibliographically approved