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Different microbial genera drive methane emissions in beef cattle fed with two extreme diets

The ratio of forage to concentrate in cattle feeding has a major influence on the composition of the microbiota in the rumen and on the mass of methane produced. Using methane measurements and microbiota data from 26 cattle we aimed to investigate the relationships between microbial relative abundan...

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Autores principales: Miller, Gemma A., Auffret, Marc D., Roehe, Rainer, Nisbet, Holly, Martínez-Álvaro, Marina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10133469/
https://www.ncbi.nlm.nih.gov/pubmed/37125186
http://dx.doi.org/10.3389/fmicb.2023.1102400
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author Miller, Gemma A.
Auffret, Marc D.
Roehe, Rainer
Nisbet, Holly
Martínez-Álvaro, Marina
author_facet Miller, Gemma A.
Auffret, Marc D.
Roehe, Rainer
Nisbet, Holly
Martínez-Álvaro, Marina
author_sort Miller, Gemma A.
collection PubMed
description The ratio of forage to concentrate in cattle feeding has a major influence on the composition of the microbiota in the rumen and on the mass of methane produced. Using methane measurements and microbiota data from 26 cattle we aimed to investigate the relationships between microbial relative abundances and methane emissions, and identify potential biomarkers, in animals fed two extreme diets - a poor quality fresh cut grass diet (GRASS) or a high concentrate total mixed ration (TMR). Direct comparisons of the effects of such extreme diets on the composition of rumen microbiota have rarely been studied. Data were analyzed considering their multivariate and compositional nature. Diet had a relevant effect on methane yield of +10.6 g of methane/kg of dry matter intake for GRASS with respect to TMR, and on the centered log-ratio transformed abundance of 22 microbial genera. When predicting methane yield based on the abundance of 28 and 25 selected microbial genera in GRASS and TMR, respectively, we achieved cross-validation prediction accuracies of 66.5 ± 9% and 85 ± 8%. Only the abundance of Fibrobacter had a consistent negative association with methane yield in both diets, whereas most microbial genera were associated with methane yield in only one of the two diets. This study highlights the stark contrast in the microbiota controlling methane yield between animals fed a high concentrate diet, such as that found on intensive finishing units, and a low-quality grass forage that is often found in extensive grazing systems. This contrast must be taken into consideration when developing strategies to reduce methane emissions by manipulation of the rumen microbial composition.
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spelling pubmed-101334692023-04-28 Different microbial genera drive methane emissions in beef cattle fed with two extreme diets Miller, Gemma A. Auffret, Marc D. Roehe, Rainer Nisbet, Holly Martínez-Álvaro, Marina Front Microbiol Microbiology The ratio of forage to concentrate in cattle feeding has a major influence on the composition of the microbiota in the rumen and on the mass of methane produced. Using methane measurements and microbiota data from 26 cattle we aimed to investigate the relationships between microbial relative abundances and methane emissions, and identify potential biomarkers, in animals fed two extreme diets - a poor quality fresh cut grass diet (GRASS) or a high concentrate total mixed ration (TMR). Direct comparisons of the effects of such extreme diets on the composition of rumen microbiota have rarely been studied. Data were analyzed considering their multivariate and compositional nature. Diet had a relevant effect on methane yield of +10.6 g of methane/kg of dry matter intake for GRASS with respect to TMR, and on the centered log-ratio transformed abundance of 22 microbial genera. When predicting methane yield based on the abundance of 28 and 25 selected microbial genera in GRASS and TMR, respectively, we achieved cross-validation prediction accuracies of 66.5 ± 9% and 85 ± 8%. Only the abundance of Fibrobacter had a consistent negative association with methane yield in both diets, whereas most microbial genera were associated with methane yield in only one of the two diets. This study highlights the stark contrast in the microbiota controlling methane yield between animals fed a high concentrate diet, such as that found on intensive finishing units, and a low-quality grass forage that is often found in extensive grazing systems. This contrast must be taken into consideration when developing strategies to reduce methane emissions by manipulation of the rumen microbial composition. Frontiers Media S.A. 2023-04-13 /pmc/articles/PMC10133469/ /pubmed/37125186 http://dx.doi.org/10.3389/fmicb.2023.1102400 Text en Copyright © 2023 Miller, Auffret, Roehe, Nisbet and Martínez-Álvaro. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Miller, Gemma A.
Auffret, Marc D.
Roehe, Rainer
Nisbet, Holly
Martínez-Álvaro, Marina
Different microbial genera drive methane emissions in beef cattle fed with two extreme diets
title Different microbial genera drive methane emissions in beef cattle fed with two extreme diets
title_full Different microbial genera drive methane emissions in beef cattle fed with two extreme diets
title_fullStr Different microbial genera drive methane emissions in beef cattle fed with two extreme diets
title_full_unstemmed Different microbial genera drive methane emissions in beef cattle fed with two extreme diets
title_short Different microbial genera drive methane emissions in beef cattle fed with two extreme diets
title_sort different microbial genera drive methane emissions in beef cattle fed with two extreme diets
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10133469/
https://www.ncbi.nlm.nih.gov/pubmed/37125186
http://dx.doi.org/10.3389/fmicb.2023.1102400
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