Meta-analysis quantifying the potential of dietary additives and rumen modifiers for methane mitigation in ruminant production systems

Almeida, Amelia K; Hegarty, Roger S; Cowie, Annette

doi:10.1016/j.aninu.2021.09.005

Author(s)

Almeida, Amelia K

Hegarty, Roger S

Cowie, Annette

Publication Date

2021-12

Abstract

Increasingly countries are seeking to reduce emission of greenhouse gases from the agricultural industries, and livestock production in particular, as part of their climate change management. While many reviews update progress in mitigation research, a quantitative assessment of the efficacy and performance-consequences of nutritional strategies to mitigate enteric methane (CH4) emissions from ruminants has been lacking. A meta-analysis was conducted based on 108 refereed papers from recent animal studies (2000-2020) to report effects on CH4 production, CH4 yield and CH4 emission intensity from 8 dietary interventions. The interventions (oils, microalgae, nitrate, ionophores, protozoal control, phytochemicals, essential oils and 3-nitrooxypropanol). Of these, macroalgae and 3-nitrooxypropanol showed greatest efficacy in reducing CH4 yield (g CH4/kg of dry matter intake) at the doses trialled. The confidence intervals derived for the mitigation efficacies could be applied to estimate the potential to reduce national livestock emissions through the implementation of these dietary interventions.

Citation

Animal Nutrition, 7(4), p. 1219-1230

ISSN

2405-6383

2405-6545

Link

https://hdl.handle.net/1959.11/51645

Language

en

Publisher

Zhongguo Xumu Shouyi Xuehui, Chinese Association of Animal Science and Veterinary Medicine

Rights

Attribution-NonCommercial-NoDerivatives 4.0 International

Title

Meta-analysis quantifying the potential of dietary additives and rumen modifiers for methane mitigation in ruminant production systems

Type of document

Journal Article

Entity Type

Publication

Author(s)	Almeida, Amelia K Hegarty, Roger S Cowie, Annette
Publication Date	2021-12
Abstract	<p>Increasingly countries are seeking to reduce emission of greenhouse gases from the agricultural industries, and livestock production in particular, as part of their climate change management. While many reviews update progress in mitigation research, a quantitative assessment of the efficacy and performance-consequences of nutritional strategies to mitigate enteric methane (CH<sub>4</sub>) emissions from ruminants has been lacking. A meta-analysis was conducted based on 108 refereed papers from recent animal studies (2000-2020) to report effects on CH<sub>4</sub> production, CH<sub>4</sub> yield and CH<sub>4</sub> emission intensity from 8 dietary interventions. The interventions (oils, microalgae, nitrate, ionophores, protozoal control, phytochemicals, essential oils and 3-nitrooxypropanol). Of these, macroalgae and 3-nitrooxypropanol showed greatest efficacy in reducing CH<sub>4</sub> yield (g CH<sub>4</sub>/kg of dry matter intake) at the doses trialled. The confidence intervals derived for the mitigation efficacies could be applied to estimate the potential to reduce national livestock emissions through the implementation of these dietary interventions.</p>
Citation	Animal Nutrition, 7(4), p. 1219-1230
ISSN	2405-6383 2405-6545
Link	https://hdl.handle.net/1959.11/51645
Language	en
Publisher	Zhongguo Xumu Shouyi Xuehui, Chinese Association of Animal Science and Veterinary Medicine
Rights	Attribution-NonCommercial-NoDerivatives 4.0 International
Title	Meta-analysis quantifying the potential of dietary additives and rumen modifiers for methane mitigation in ruminant production systems
Type of document	Journal Article
Entity Type	Publication

Meta-analysis quantifying the potential of dietary additives and rumen modifiers for methane mitigation in ruminant production systems

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