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Identification of differential duodenal gene expression levels and microbiota abundance correlated with differences in energy utilisation in chickens

journal contribution
posted on 06.12.2017, 00:00 by B Konsak, Dragana StanleyDragana Stanley, V Haring, M Geier, R Hughes, G Howarth, T Crowley, R Moore
Among the terrestrial production animals, chickens are the most efficient users of energy. Apparentmetabolisable energy (AME) is a measure of energy utilisation efficiency representing the difference between energyconsumed and energy lost via the excreta. There are significant differences in the energy utilisation capability of individualbirds that have a similar genetic background and are raised under identical conditions. It would be of benefit to poultryproducers if the basis of these differences could be understood and the differences minimised. We analysed duodenal geneexpression and microbiota differences in birds with different energy utilisation efficiencies. Using microarray analysis,significant differences were found in duodenal gene expression between high- and low-AME birds, indicating that level ofcell turnover may distinguish different groups of birds. High-throughput sequencing of bacterial 16S rRNAgenes indicatedthat duodenal microbiota was dominated by Lactobacillusspecies and two operational taxonomic units, identified aslactobacilli species, were found to be more abundant (P<0.05) in low-AME birds. The present study has identified geneexpression and microbiota properties that correlate with differences in AME; further studies will be required to investigatethe causal relationships.

History

Volume

53

Issue

12

Start Page

1269

End Page

1275

Number of Pages

7

ISSN

1836-0939

Location

Australia

Publisher

CSIRO Publishing

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

CSIRO (Australia); Pig and Poultry Production Institute; School of Medical and Applied Sciences (2013- ); TBA Research Institute; University of Adelaide;

Era Eligible

Yes

Journal

Animal production science.

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