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The effect of fishmeal inclusion and prebiotic supplementation on the hindgut faecal microbiota of farmed Tasmanian Atlantic salmon (Salmo salar L.)

Citation

Neuman, C and Hatje, E and Smullen, R and Bowman, JP and Katouli, M, The effect of fishmeal inclusion and prebiotic supplementation on the hindgut faecal microbiota of farmed Tasmanian Atlantic salmon (Salmo salar L.), Journal of Applied Microbiology, 125 pp. 952-963. ISSN 1364-5072 (2018) [Refereed Article]

Copyright Statement

2018 The Society for Applied Microbiology

DOI: doi:10.1111/jam.13930

Abstract

Aims: Factors such as seasonal temperature and diet components, for example, fishmeal (FM) inclusion, can influence the composition of the gut microbiota of fish. In this study, we examined changes in the gut bacterial populations, in particular lactic acid bacteria (LAB), of farmed Tasmanian Atlantic salmon in response to different diets, during periods of higher water temperature.

Methods and Results: Between December 2011 and March 2012 hindgut faecal samples were collected from Atlantic salmon from a commercial fish farm in south of Hobart, Tasmania, fed with one of four trial diets containing either high or low FM inclusion levels with or without prebiotics. Overall there was little difference in the cultivatable bacterial populations in response to varying levels of FM and prebiotic supplementation, with LAB counts decreasing in response to increased water temperatures. However, it was observed that the high FM diet supported the presence of LAB in January, when these were not detected in the low FM diets.

Conclusions: Our study indicates that the inclusion of higher amounts of FM rather than the addition of prebiotics has a greater effect on LAB colonization of the gut in Atlantic salmon.

Significance and Impact of the Study: This study highlights the importance of the new fish feeds for promoting salmon health in aquaculture industry.

Item Details

Item Type:Refereed Article
Keywords:salmon, gut microbiota, virulence, genes, metabolism, aquaculture, Atlantic salmon, fishmeal, LAB, metabolic capacity, prebiotic
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial Ecology
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Fin Fish (excl. Tuna)
UTAS Author:Bowman, JP (Associate Professor John Bowman)
ID Code:128414
Year Published:2018
Deposited By:TIA - Research Institute
Deposited On:2018-09-20
Last Modified:2019-03-21
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