Ubiquitous parasites drive a 33% increase in methane yield from livestock

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Abstract

Of anthropogenic methane emissions 40% can be attributed to agriculture, a majority of which is from enteric fermentation in livestock. With international commitments to tackle drivers of climate change, there is a need to lower global methane emissions from livestock production. Gastrointestinal helminths (parasitic worms) are globally ubiquitous and represent one of the most pervasive challenges to the health and productivity of grazing livestock. These parasites influence a number of factors affecting methane emissions including feed efficiency, nutrient use, and production traits. However their effects on methane emissions are unknown. This is the first study that empirically demonstrates disease-driven increases in methane yield in livestock (grams of CH4 per kg of dry matter intake). We do this by measuring methane emissions (in respiration chambers), dry matter intake (DMI), and production parameters for parasitised and parasite-free lambs. This study shows that parasite infections in lambs can lead to a 33% increase in methane yield (g CH4/kg DMI). This knowledge will facilitate more accurate calculations of the true environmental costs of parasitism in livestock, and reveals the potential benefits of mitigating emission through controlling parasite burdens.
Original languageEnglish
Pages (from-to)1017 - 1021
Number of pages5
JournalInternational Journal for Parasitology
Volume48
Issue number13
Early online date11 Aug 2018
DOIs
Publication statusFirst published - 11 Aug 2018

Fingerprint

methane
livestock
parasites
dry matter intake
helminths
lambs
livestock production
dry matter accumulation
breathing
parasitism
feed conversion
fermentation
climate change
grazing
agriculture
nutrients
infection

Bibliographical note

1032205

Keywords

  • Climate change
  • Disease
  • Greenhouse gas
  • Lambs
  • Methane
  • Parasites

Cite this

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title = "Ubiquitous parasites drive a 33{\%} increase in methane yield from livestock",
abstract = "Of anthropogenic methane emissions 40{\%} can be attributed to agriculture, a majority of which is from enteric fermentation in livestock. With international commitments to tackle drivers of climate change, there is a need to lower global methane emissions from livestock production. Gastrointestinal helminths (parasitic worms) are globally ubiquitous and represent one of the most pervasive challenges to the health and productivity of grazing livestock. These parasites influence a number of factors affecting methane emissions including feed efficiency, nutrient use, and production traits. However their effects on methane emissions are unknown. This is the first study that empirically demonstrates disease-driven increases in methane yield in livestock (grams of CH4 per kg of dry matter intake). We do this by measuring methane emissions (in respiration chambers), dry matter intake (DMI), and production parameters for parasitised and parasite-free lambs. This study shows that parasite infections in lambs can lead to a 33{\%} increase in methane yield (g CH4/kg DMI). This knowledge will facilitate more accurate calculations of the true environmental costs of parasitism in livestock, and reveals the potential benefits of mitigating emission through controlling parasite burdens.",
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T1 - Ubiquitous parasites drive a 33% increase in methane yield from livestock

AU - Fox, NJ

AU - Smith, LA

AU - Houdijk, JGM

AU - Athanasiadou, S

AU - Hutchings, MR

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N2 - Of anthropogenic methane emissions 40% can be attributed to agriculture, a majority of which is from enteric fermentation in livestock. With international commitments to tackle drivers of climate change, there is a need to lower global methane emissions from livestock production. Gastrointestinal helminths (parasitic worms) are globally ubiquitous and represent one of the most pervasive challenges to the health and productivity of grazing livestock. These parasites influence a number of factors affecting methane emissions including feed efficiency, nutrient use, and production traits. However their effects on methane emissions are unknown. This is the first study that empirically demonstrates disease-driven increases in methane yield in livestock (grams of CH4 per kg of dry matter intake). We do this by measuring methane emissions (in respiration chambers), dry matter intake (DMI), and production parameters for parasitised and parasite-free lambs. This study shows that parasite infections in lambs can lead to a 33% increase in methane yield (g CH4/kg DMI). This knowledge will facilitate more accurate calculations of the true environmental costs of parasitism in livestock, and reveals the potential benefits of mitigating emission through controlling parasite burdens.

AB - Of anthropogenic methane emissions 40% can be attributed to agriculture, a majority of which is from enteric fermentation in livestock. With international commitments to tackle drivers of climate change, there is a need to lower global methane emissions from livestock production. Gastrointestinal helminths (parasitic worms) are globally ubiquitous and represent one of the most pervasive challenges to the health and productivity of grazing livestock. These parasites influence a number of factors affecting methane emissions including feed efficiency, nutrient use, and production traits. However their effects on methane emissions are unknown. This is the first study that empirically demonstrates disease-driven increases in methane yield in livestock (grams of CH4 per kg of dry matter intake). We do this by measuring methane emissions (in respiration chambers), dry matter intake (DMI), and production parameters for parasitised and parasite-free lambs. This study shows that parasite infections in lambs can lead to a 33% increase in methane yield (g CH4/kg DMI). This knowledge will facilitate more accurate calculations of the true environmental costs of parasitism in livestock, and reveals the potential benefits of mitigating emission through controlling parasite burdens.

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KW - Greenhouse gas

KW - Lambs

KW - Methane

KW - Parasites

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