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Dietary Filamentous Fungi and Duration of Feeding Modulates Gut Microbial Composition in Rainbow Trout (Oncorhynchus mykiss)

Singh, Aprajita and Karimi, Sajjad and Vidakovic, Aleksandar and Dicksved, Johan and Langeland, Markus and Ferreira, Jorge A. and Taherzadeh, Mohammad J. and Kiessling, Anders and Lundh, Torbjörn (2021). Dietary Filamentous Fungi and Duration of Feeding Modulates Gut Microbial Composition in Rainbow Trout (Oncorhynchus mykiss). Frontiers in marine science. 8 , 728569
[Research article]

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Abstract

Changes in gut microbial composition over time in rainbow trout fed differentially processed diets supplemented with the filamentous fungi Neurospora intermedia were investigated in a 30-day feeding trial. Fish were fed a reference diet, non-preconditioned diet (NPD), or preconditioned (heat-treated) diet (PD), with the same inclusion level of N. intermedia in diets NPD and PD. Gut microbiota were analyzed on day 0, 10, 20, and 30. Gut microbial composition was similar for all diets on day 0, but was significantly different at day 10 and day 20. On day 30, the gut again contained similar communities irrespective of diet. The overall gut microbiota for each diet changed over time. Abundance of Peptostreptococcus and Streptococcus was higher in the initial days of feeding in fish fed on commercial diet, while a significant increase in lactic acid bacteria (Lactococcus lactis) was observed on day 30. Feed processing (preconditioning) did not contribute largely in shaping the gut microbiome. These results indicate that dietary manipulation and duration of feeding should be considered when evaluating gut microbial composition in cultured fish. A minimum 30-day feeding trial is suggested for gut microbiome, host and diet interaction studies.

Authors/Creators:Singh, Aprajita and Karimi, Sajjad and Vidakovic, Aleksandar and Dicksved, Johan and Langeland, Markus and Ferreira, Jorge A. and Taherzadeh, Mohammad J. and Kiessling, Anders and Lundh, Torbjörn
Title:Dietary Filamentous Fungi and Duration of Feeding Modulates Gut Microbial Composition in Rainbow Trout (Oncorhynchus mykiss)
Series Name/Journal:Frontiers in marine science
Year of publishing :2021
Volume:8
Article number:728569
ISSN:2296-7745
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science
URN:NBN:urn:nbn:se:slu:epsilon-p-114057
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114057
Additional ID:
Type of IDID
DOI10.3389/fmars.2021.728569
ID Code:25932
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: SLUpub Connector
Deposited On:22 Oct 2021 13:39
Metadata Last Modified:22 Oct 2021 13:41

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