The effect of fishmeal inclusion and prebiotic supplementation on the hindgut faecal microbiota of farmed Tasmanian Atlantic salmon (Salmo salar L.).
J Appl Microbiol
; 125(4): 952-963, 2018 Oct.
Article
in En
| MEDLINE
| ID: mdl-29799652
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 ANDRESULTS:
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.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Salmo salar
/
Feces
/
Prebiotics
/
Gastrointestinal Microbiome
/
Animal Feed
Limits:
Animals
Country/Region as subject:
Oceania
Language:
En
Journal:
J Appl Microbiol
Journal subject:
MICROBIOLOGIA
Year:
2018
Document type:
Article
Affiliation country:
Australia