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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004842naa a2200649 4500
001oai:gup.ub.gu.se/308704
003SwePub
008240528s2021 | |||||||||||000 ||eng|
024a https://gup.ub.gu.se/publication/3087042 URI
024a https://doi.org/10.1186/s42523-020-00065-12 DOI
040 a (SwePub)gu
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Keating, C.4 aut
2451 0a Temporal changes in the gut microbiota in farmed Atlantic cod (Gadus morhua) outweigh the response to diet supplementation with macroalgae
264 c 2021-01-07
264 1b Springer Science and Business Media LLC,c 2021
520 a Background Aquaculture successfully meets global food demands for many fish species. However, aquaculture production of Atlantic cod (Gadus morhua) is just 2.5% of total market production. For cod farming to be a viable economic venture specific challenges on how to increase growth, health and farming productivity need to be addressed. Feed ingredients play a key role here. Macroalgae (seaweeds) have been suggested as a functional feed supplement with both health and economic benefits for terrestrial farmed animals and fish. The impact of such dietary supplements to cod gut integrity and microbiota, which contribute to overall fish robustness is unknown. The objective of this study was to supplement the diet of juvenile Atlantic cod with macroalgae and determine the impacts on fish condition and growth, gut morphology and hindgut microbiota composition (16S rRNA amplicon sequencing). Fish were fed one of three diets: control (no macroalgal inclusion), 10% inclusion of either egg wrack (Ascophyllum nodosum) or sea lettuce (Ulva rigida) macroalgae in a 12-week trial. Results The results demonstrated there was no significant difference in fish condition, gut morphology or hindgut microbiota between the U. rigida supplemented fish group and the control group at any time-point. This trend was not observed with the A. nodosum treatment. Fish within this group were further categorised as either 'Normal' or 'Lower Growth'. 'Lower Growth' individuals found the diet unpalatable resulting in reduced weight and condition factor combined with an altered gut morphology and microbiome relative to the other treatments. Excluding this group, our results show that the hindgut microbiota was largely driven by temporal pressures with the microbial communities becoming more similar over time irrespective of dietary treatment. The core microbiome at the final time-point consisted of the orders Vibrionales (Vibrio and Photobacterium), Bacteroidales (Bacteroidetes and Macellibacteroides) and Clostridiales (Lachnoclostridium). Conclusions Our study indicates that U. rigida macroalgae can be supplemented at 10% inclusion levels in the diet of juvenile farmed Atlantic cod without any impact on fish condition or hindgut microbial community structure. We also conclude that 10% dietary inclusion of A. nodosum is not a suitable feed supplement in a farmed cod diet.
650 7a NATURVETENSKAPx Biologix Zoologi0 (SwePub)106082 hsv//swe
650 7a NATURAL SCIENCESx Biological Sciencesx Zoology0 (SwePub)106082 hsv//eng
653 a Atlantic cod(1)
653 a Hindgut microbiome(2)
653 a Seaweed(3)
653 a Macroalgae(4)
653 a Ulva
653 a rigida(5)
653 a Ascophyllum nodosum(6)
653 a 16S rRNA amplicon sequencing(7)
653 a Aquaculture(8)
653 a salmon salmo-salar
653 a trout oncorhynchus-mykiss
653 a meal-induced enteritis
653 a soybean-meal
653 a nutritional aspects
653 a partial replacement
653 a growth-performance
653 a feed-utilization
653 a body-composition
653 a ulva-rigida
653 a Microbiology
653 a Veterinary Sciences
700a Bolton-Warberg, M.4 aut
700a Hinchcliffe, James,d 1992u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut0 (Swepub:gu)xhinja
700a Davies, R.4 aut
700a Whelan, S.4 aut
700a Wan, A. H. L.4 aut
700a Fitzgerald, R. D.4 aut
700a Davies, S. J.4 aut
700a Ijaz, U. Z.4 aut
700a Smith, C. J.4 aut
710a Göteborgs universitetb Institutionen för biologi och miljövetenskap4 org
773t Animal Microbiomed : Springer Science and Business Media LLCg 3:1q 3:1x 2524-4671
856u https://animalmicrobiome.biomedcentral.com/track/pdf/10.1186/s42523-020-00065-1
8564 8u https://gup.ub.gu.se/publication/308704
8564 8u https://doi.org/10.1186/s42523-020-00065-1

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