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  1. AU="Torunn Forberg"
  2. AU=Brackley Chris A.
  3. AU="Klünker, Wolf-Ulrich"
  4. AU="Cody N Heiser"
  5. AU="Xing-Ding Zhou"
  6. AU="Abdallah, Al-Ola"
  7. AU=Grimminck Koen
  8. AU="Roulston, T’ai H."
  9. AU="Morgan, Robert D"
  10. AU="Hayashida, Hirotoshi"
  11. AU=Kivisto Ilkka
  12. AU="Miller, Heinz"
  13. AU="Campbell, Joshua W"
  14. AU="Miller, David J"
  15. AU="Morales-Ledesma, Leticia"
  16. AU="Rongkard, Patpong"
  17. AU="Martínez Rolando, Lidia"
  18. AU="Dogra, Surabhi"
  19. AU="Liu, Xiaolei"
  20. AU=Machesky Laura
  21. AU="Schadrac C Agbla"

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  1. Artikel ; Online: Effects of dietary supplementation with prebiotics and Pediococcus acidilactici on gut health, transcriptome, microbiota, and metabolome in Atlantic salmon (Salmo salar L.) after seawater transfer

    Anusha K. S. Dhanasiri / Alexander Jaramillo-Torres / Elvis M. Chikwati / Torunn Forberg / Åshild Krogdahl / Trond M. Kortner

    Animal Microbiome, Vol 5, Iss 1, Pp 1-

    2023  Band 22

    Abstract: Abstract Background Given the importance of gut microbiota for health, growth and performance of the host, the aquaculture industry has taken measures to develop functional fish feeds aiming at modulating gut microbiota and inducing the anticipated ... ...

    Abstract Abstract Background Given the importance of gut microbiota for health, growth and performance of the host, the aquaculture industry has taken measures to develop functional fish feeds aiming at modulating gut microbiota and inducing the anticipated beneficial effects. However, present understanding of the impact of such functional feeds on the fish is limited. The study reported herein was conducted to gain knowledge on performance and gut health characteristics in post-smolt Atlantic salmon fed diets varying in content of functional ingredients. Three experimental diets, a diet containing fructo-oligosaccharides (FOS), a diet with a combination of FOS and Pediococcus acidilactici (BC) and a diet containing galacto-oligosaccharides (GOS) and BC, were used in a 10-weeks feeding trial. A commercial diet without functional ingredients was also included as a control/reference. Samples of blood plasma, mucosa and digesta were subjected to microbiota, transcriptome and metabolome profiling for evaluation of the diet effects. Results No significant growth differences were observed between fish fed the supplemented diets, but FOS–BC fed fish showed significantly faster growth than the control fed fish. The microbiota results showed that the BC was present in both the digesta, and the mucosa samples of fish fed the FOS–BC and GOS–BC diets. Digesta-associated microbiota was altered, while mucosa-associated microbiota was relatively unaffected by diet. Replacing FOS with GOS increased the level of metabolites linked to phospholipid, fatty acid, carnitine and sphingolipid metabolism. Variation in metabolite levels between the treatments closely correlated with genera mainly belonging to Firmicutes and Actinobacteria phyla. The transcriptome analyses indicated diet effects of exchanging FOS with GOS on immune functions, oxidative defense and stress responses. No significant diet effect was observed on intestinal inflammation in the pyloric caeca or in the distal intestine, or on lipid accumulation in the pyloric caeca. ...
    Schlagwörter Functional ingredients ; Prebiotics ; Probiotics ; FOS ; GOS ; Gut microbiota ; Veterinary medicine ; SF600-1100 ; Microbiology ; QR1-502
    Thema/Rubrik (Code) 590
    Sprache Englisch
    Erscheinungsdatum 2023-02-01T00:00:00Z
    Verlag BMC
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Publisher Correction

    Kasper Rømer Villumsen / Maki Ohtani / Torunn Forberg / Elisabeth Aasum / John Tinsley / Anders Miki Bojesen

    Scientific Reports, Vol 11, Iss 1, Pp 1-

    Synbiotic feed supplementation significantly improves lipid utilization and shows discrete effects on disease resistance in rainbow trout (Oncorhynchus mykiss)

    2021  Band 1

    Abstract: An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...

    Abstract An amendment to this paper has been published and can be accessed via a link at the top of the paper.
    Schlagwörter Medicine ; R ; Science ; Q
    Sprache Englisch
    Erscheinungsdatum 2021-04-01T00:00:00Z
    Verlag Nature Portfolio
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Commensal and Opportunistic Bacteria Present in the Microbiota in Atlantic Cod ( Gadus morhua ) Larvae Differentially Alter the Hosts’ Innate Immune Responses

    Ragnhild Inderberg Vestrum / Torunn Forberg / Birgit Luef / Ingrid Bakke / Per Winge / Yngvar Olsen / Olav Vadstein

    Microorganisms, Vol 10, Iss 24, p

    2022  Band 24

    Abstract: The roles of host-associated bacteria have gained attention lately, and we now recognise that the microbiota is essential in processes such as digestion, development of the immune system and gut function. In this study, Atlantic cod larvae were reared ... ...

    Abstract The roles of host-associated bacteria have gained attention lately, and we now recognise that the microbiota is essential in processes such as digestion, development of the immune system and gut function. In this study, Atlantic cod larvae were reared under germ-free, gnotobiotic and conventional conditions. Water and fish microbiota were characterised by 16S rRNA gene analyses. The cod larvae’s transcriptional responses to the different microbial conditions were analysed by a custom Agilent 44 k oligo microarray. Gut development was assessed by transmission electron microscopy (TEM). Water and fish microbiota differed significantly in the conventional treatment and were dominated by different fast-growing bacteria. Our study indicates that components of the innate immune system of cod larvae are downregulated by the presence of non-pathogenic bacteria, and thus may be turned on by default in the early larval stages. We see indications of decreased nutrient uptake in the absence of bacteria. The bacteria also influence the gut morphology, reflected in shorter microvilli with higher density in the conventional larvae than in the germ-free larvae. The fact that the microbiota alters innate immune responses and gut morphology demonstrates its important role in marine larval development.
    Schlagwörter Atlantic cod ; microbiota ; innate immune system ; germ-free ; gnotobiotic ; Biology (General) ; QH301-705.5
    Thema/Rubrik (Code) 333
    Sprache Englisch
    Erscheinungsdatum 2022-12-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Citrus flavonoids, β-Glucan and organic acid feed additives decrease relative risk during Yersinia ruckeri O1 biotype 2 infection of rainbow trout (Oncorhynchus mykiss)

    Kasper Rømer Villumsen / Maki Ohtani / Torunn Forberg / John Tinsley / Mette Boye / Anders M. Bojesen

    PeerJ, Vol 8, p e

    2020  Band 8706

    Abstract: Whether through direct supplementation of bacteria or by prebiotic supplementation thought to favour subsets of bacteria, modulation of gut microbiota constitutes an important and promising alternative to the use of prophylactic and growth promoting ... ...

    Abstract Whether through direct supplementation of bacteria or by prebiotic supplementation thought to favour subsets of bacteria, modulation of gut microbiota constitutes an important and promising alternative to the use of prophylactic and growth promoting antibiotics in worldwide aquaculture. We fed a commercial base feed, alone or supplemented with either proprietary β-glucan, β-glucan and organic acids, citrus flavonoid or yeast cell wall supplements, to rainbow trout over a period of four weeks. Fish from each feed group were then subjected to experimental, waterborne infection with Yersinia ruckeri O1 biotype 2. Following experimental feeding, the β-glucan and organic acids supplemented group showed significantly improved feed conversion and lipid efficiency ratios. Furthermore, the β-glucan, β-glucan and organic acids and citrus flavonoid supplements proved to significantly reduce the risk of mortality in rainbow trout during experimental infection as shown by hazard ratio analysis. Resulting in 33.2%, 30.6% and 30.5% reduction in risk relative to the non-supplemented base feed, respectively, these three supplements show a promising potential either as stand-alone feed supplements, or as components in complex feed formulations.
    Schlagwörter Prebiotics ; Rainbow trout ; Yersinia ruckeri ; Aquaculture ; Feed ; Feed additives ; Medicine ; R
    Sprache Englisch
    Erscheinungsdatum 2020-03-01T00:00:00Z
    Verlag PeerJ Inc.
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: A multi-omics approach unravels metagenomic and metabolic alterations of a probiotic and synbiotic additive in rainbow trout (Oncorhynchus mykiss)

    Jacob Agerbo Rasmussen / Kasper Rømer Villumsen / Madeleine Ernst / Martin Hansen / Torunn Forberg / Shyam Gopalakrishnan / M. Thomas P. Gilbert / Anders Miki Bojesen / Karsten Kristiansen / Morten Tønsberg Limborg

    Microbiome, Vol 10, Iss 1, Pp 1-

    2022  Band 19

    Abstract: Abstract Background Animal protein production is increasingly looking towards microbiome-associated services such as the design of new and better probiotic solutions to further improve gut health and production sustainability. Here, we investigate the ... ...

    Abstract Abstract Background Animal protein production is increasingly looking towards microbiome-associated services such as the design of new and better probiotic solutions to further improve gut health and production sustainability. Here, we investigate the functional effects of bacteria-based pro- and synbiotic feed additives on microbiome-associated functions in relation to growth performance in the commercially important rainbow trout (Oncorhynchus mykiss). We combine complementary insights from multiple omics datasets from gut content samples, including 16S bacterial profiling, whole metagenomes, and untargeted metabolomics, to investigate bacterial metagenome-assembled genomes (MAGs) and their molecular interactions with host metabolism. Results Our findings reveal that (I) feed additives changed the microbiome and that rainbow trout reared with feed additives had a significantly reduced relative abundance of the salmonid related Candidatus Mycoplasma salmoninae in both the mid and distal gut content, (II) genome resolved metagenomics revealed that alterations of microbial arginine biosynthesis and terpenoid backbone synthesis pathways were directly associated with the presence of Candidatus Mycoplasma salmoninae, and (III) differences in the composition of intestinal microbiota among feed types were directly associated with significant changes of the metabolomic landscape, including lipids and lipid-like metabolites, amino acids, bile acids, and steroid-related metabolites. Conclusion Our results demonstrate how the use of multi-omics to investigate complex host-microbiome interactions enable us to better evaluate the functional potential of probiotics compared to studies that only measure overall growth performance or that only characterise the microbial composition in intestinal environments. Video Abstract
    Schlagwörter Microbial ecology ; QR100-130
    Sprache Englisch
    Erscheinungsdatum 2022-01-01T00:00:00Z
    Verlag BMC
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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