Host genetics and the rumen microbiome jointly associate with methane emissions in dairy cows

Gareth Frank Difford*, Damian Rafal Plichta, Peter Løvendahl, Jan Lassen, Samantha Joan Noel, Ole Højberg, André Denis G. Wright, Zhigang Zhu, Lise Kristensen, Henrik Bjørn Nielsen, Bernt Guldbrandtsen, Goutam Sahana

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)

Abstract

Cattle and other ruminants produce large quantities of methane (~110 million metric tonnes per annum), which is a potent greenhouse gas affecting global climate change. Methane (CH4) is a natural by-product of gastro-enteric microbial fermentation of feedstuffs in the rumen and contributes to 6% of total CH4 emissions from anthropogenic-related sources. The extent to which the host genome and rumen microbiome influence CH4 emission is not yet well known. This study confirms individual variation in CH4 production was influenced by individual host (cow) genotype, as well as the host's rumen microbiome composition. Abundance of a small proportion of bacteria and archaea taxa were influenced to a limited extent by the host's genotype and certain taxa were associated with CH4 emissions. However, the cumulative effect of all bacteria and archaea on CH4 production was 13%, the host genetics (heritability) was 21% and the two are largely independent. This study demonstrates variation in CH4 emission is likely not modulated through cow genetic effects on the rumen microbiome. Therefore, the rumen microbiome and cow genome could be targeted independently, by breeding low methane-emitting cows and in parallel, by investigating possible strategies that target changes in the rumen microbiome to reduce CH4 emissions in the cattle industry.

Original languageEnglish
Article numbere1007580
JournalPlos Genetics
Volume14
Issue number10
DOIs
Publication statusPublished - 12 Oct 2018

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  • Datasets

    6S rRNA sequence of rumen microbes in dairy cattle

    Difford, G. (Creator), Plichta, D. R. (Creator), Løvendahl, P. (Creator), Lassen, J. (Creator), Noel, S. J. (Creator), Højberg, O. (Creator), Wright, A. D. G. (Creator), Zhu, Z. (Creator), Kristensen, L. (Creator), Nielsen, H. B. (Creator), Guldbrandtsen, B. (Creator) & Sahana, G. (Creator), Aarhus University, 20 Sep 2018

    Dataset

    Cite this

    Difford, G. F., Plichta, D. R., Løvendahl, P., Lassen, J., Noel, S. J., Højberg, O., Wright, A. D. G., Zhu, Z., Kristensen, L., Nielsen, H. B., Guldbrandtsen, B., & Sahana, G. (2018). Host genetics and the rumen microbiome jointly associate with methane emissions in dairy cows. Plos Genetics, 14(10), [e1007580]. https://doi.org/10.1371/journal.pgen.1007580