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Issue 2, 2016
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Extrusion of barley and oat influence the fecal microbiota and SCFA profile of growing pigs

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Abstract

The effect of extrusion of barley and oat on the fecal microbiota and the formation of SCFA was evaluated using growing pigs as model system. The pigs were fed a diet containing either whole grain barley (BU), oat groat (OU), or their respective extruded samples (BE and OE). 454 pyrosequencing showed that the fecal microbiota of growing pigs was affected by both extrusion and grain type. Extruded grain resulted in lower bacterial diversity and enrichment in operational taxonomic units (OTUs) affiliated with members of the Streptococcus, Blautia and Bulleidia genera, while untreated grain showed enrichment in OTUs affiliated with members of the Bifidobacterium and Lactobacillus genera, and the butyrate-producing bacteria Butyricicoccus, Roseburia, Coprococcus and Pseudobutyrivibrio. Untreated grain resulted in a significant increase of n-butyric, i-valeric and n-valeric acid, which correlated with an increase of Bifidobacterium and Lactobacillus. This is the first study showing that cereal extrusion affects the microbiota composition and diversity towards a state generally thought to be less beneficial for health, as well as less amounts of beneficial butyric acid.

Graphical abstract: Extrusion of barley and oat influence the fecal microbiota and SCFA profile of growing pigs

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Publication details

The article was received on 27 Nov 2015, accepted on 01 Jan 2016 and first published on 05 Jan 2016


Article type: Paper
DOI: 10.1039/C5FO01452B
Citation: Food Funct., 2016,7, 1024-1032
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    Extrusion of barley and oat influence the fecal microbiota and SCFA profile of growing pigs

    B. Moen, I. Berget, I. Rud, A. S. Hole, N. P. Kjos and S. Sahlstrøm, Food Funct., 2016, 7, 1024
    DOI: 10.1039/C5FO01452B

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