ORCID Profile
0000-0002-1865-7727
Current Organisation
UNSW Sydney
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Publisher: Frontiers Media SA
Date: 25-06-2018
Publisher: Oxford University Press (OUP)
Date: 12-2018
Publisher: Frontiers Media SA
Date: 24-05-2017
Publisher: Springer Science and Business Media LLC
Date: 12-10-2017
DOI: 10.1038/S41598-017-13013-Y
Abstract: Methane generated during enteric fermentation in ruminant livestock species is a major contributor to global anthropogenic greenhouse gas emissions. A period of moderate feed restriction followed by ad libitum access to feed is widely applied in cattle management to exploit the animal’s compensatory growth potential and reduce feed costs. In the present study, we utilised microbial RNA from rumen digesta s les to assess the phylogenetic ersity of transcriptionally active methanogens from feed-restricted and non-restricted animals. To determine the contribution of different rumen methanogens to methanogenesis during dietary restriction of cattle, we conducted high-throughput mcrA cDNA licon sequencing on an Illumina MiSeq and analysed both the abundance and phylogenetic origin of different mcrA cDNA sequences. When compared to their unrestricted contemporaries, in feed-restricted animals, the methanogenic activity, based on mcrA transcript abundance, of Methanobrevibacter gottschalkii clade increased while the methanogenic activity of the Methanobrevibacter ruminantium clade and members of the Methanomassiliicoccaceae family decreased. This study shows that the quantity of feed consumed can evoke large effects on the composition of methanogenically active species in the rumen of cattle. These data potentially have major implications for targeted CH 4 mitigation approaches such as anti-methanogen vaccines and/or tailored dietary management.
Publisher: Frontiers Media SA
Date: 10-08-2018
Publisher: Elsevier BV
Date: 12-2019
Publisher: Oxford University Press (OUP)
Date: 12-2018
No related grants have been discovered for Emily McGovern.