A REVIEW: THE IMPORTANCE OF THE ENTERIC METHANE PRODUCTION MEASUREMENT METHODS AND MITIGATION STRATEGIES IN RUMINANT ANIMALS

AbstractEnteric methane production contributes significantly to the greenhouse gas emission globally. Although, buffaloes are integral part of livestock production in Asian countries, contributing milk, meat and draft power, the contribution of enteric methane to environmental pollution attracts attention. The present study investigated the efficacy of garlic (Allium sativum) oil in reducing enteric methane production from buffaloes (Bubalus bubalis) by in vitro rumen fermentation. Garlic oil (GOL) was tested at four concentrations [0 (Control), 33.33 µl (GOL-1), 83.33 µl (GOL-2) and 166.66 µl (GOL-3) per litre of buffered rumen fluid] in 100-ml graduated glass syringes and incubated at 39℃ for 24 h for in vitro rumen fermentation study. Supplementation of GOL-1 increased (p < 0.05) total gas production in comparison with GOL-3; however, it remained comparable (p > 0.05) with control and GOL-2. Graded doses of garlic oil inclusions reduced (p < 0.001) methane concentration (%) in total gas and total methane production (ml/g DM), irrespective of concentrations. The feed degradability, volatile fatty acids and microbial biomass production (MBP) were not affected (p > 0.05) by GOL-1, but these tended to decrease in GOL-2 with marked reduction (p < 0.01) in GOL-3. The decrease (p < 0.01) in NH3–N concentration in fermentation fluid in the presence of garlic oil, irrespective of concentration, suggests reduced deamination by inhibiting rumen proteolytic bacterial population. The activities of ruminal fibrolytic enzymes (CMCase, xylanase, β-glucosidase, acetyl esterase) were not affected by lower dose (GOL-1) of garlic oil; however, reduction (p < 0.05) of these enzymes activity in rumen liquor was evident at higher doses (GOL-2 and GOL-3) of supplementation. This study shows positive impact of garlic oil supplementation at low dose (33.33 µl/l of rumen fluid) in reducing enteric methane production, thereby, abatement of environmental pollution without affecting feed digestibility.

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78 Predicting enteric methane production from the rumen microbial composition of beef steers fed either a high concentrate or cut grass diet

Animal - science proceedings ◽

10.1016/j.anscip.2021.03.079 ◽

2021 ◽

Vol 12 (1) ◽

pp. 57

Author(s):

Gemma Miller ◽

Marc Auffret ◽

Rainer Roehe ◽

Holly Nisbet ◽

Marina Martínez-Alvaro

Keyword(s):

Methane Production ◽

Beef Steers ◽

Microbial Composition ◽

Enteric Methane

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Feeding saponin-containing Yucca schidigera and Quillaja saponaria to decrease enteric methane production in dairy cows

Journal of Dairy Science ◽

10.3168/jds.2008-1843 ◽

2009 ◽

Vol 92 (6) ◽

pp. 2809-2821 ◽

Cited By ~ 108

Author(s):

L. Holtshausen ◽

A.V. Chaves ◽

K.A. Beauchemin ◽

S.M. McGinn ◽

T.A. McAllister ◽

...

Keyword(s):

Dairy Cows ◽

Methane Production ◽

Quillaja Saponaria ◽

Yucca Schidigera ◽

Enteric Methane

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Forage quality declines with rising temperatures, with implications for livestock production and methane emissions

Biogeosciences ◽

10.5194/bg-14-1403-2017 ◽

2017 ◽

Vol 14 (6) ◽

pp. 1403-1417 ◽

Cited By ~ 21

Author(s):

Mark A. Lee ◽

Aaron P. Davis ◽

Mizeck G. G. Chagunda ◽

Pete Manning

Keyword(s):

Climate Change ◽

Methane Production ◽

Nutritive Value ◽

Elevated Temperatures ◽

Environmental Changes ◽

Forage Quality ◽

Livestock Farming ◽

Forage Plants ◽

Model Average ◽

Enteric Methane

Abstract. Livestock numbers are increasing to supply the growing demand for meat-rich diets. The sustainability of this trend has been questioned, and future environmental changes, such as climate change, may cause some regions to become less suitable for livestock. Livestock and wild herbivores are strongly dependent on the nutritional chemistry of forage plants. Nutrition is positively linked to weight gains, milk production and reproductive success, and nutrition is also a key determinant of enteric methane production. In this meta-analysis, we assessed the effects of growing conditions on forage quality by compiling published measurements of grass nutritive value and combining these data with climatic, edaphic and management information. We found that forage nutritive value was reduced at higher temperatures and increased by nitrogen fertiliser addition, likely driven by a combination of changes to species identity and changes to physiology and phenology. These relationships were combined with multiple published empirical models to estimate forage- and temperature-driven changes to cattle enteric methane production. This suggested a previously undescribed positive climate change feedback, where elevated temperatures reduce grass nutritive value and correspondingly may increase methane production by 0.9 % with a 1 °C temperature rise and 4.5 % with a 5 °C rise (model average), thus creating an additional climate forcing effect. Future methane production increases are expected to be largest in parts of North America, central and eastern Europe and Asia, with the geographical extent of hotspots increasing under a high emissions scenario. These estimates require refinement and a greater knowledge of the abundance, size, feeding regime and location of cattle, and the representation of heat stress should be included in future modelling work. However, our results indicate that the cultivation of more nutritious forage plants and reduced livestock farming in warming regions may reduce this additional source of pastoral greenhouse gas emissions.

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Does Dietary Mitigation of Enteric Methane Production Affect Rumen Function and Animal Productivity in Dairy Cows?

PLoS ONE ◽

10.1371/journal.pone.0140282 ◽

2015 ◽

Vol 10 (10) ◽

pp. e0140282 ◽

Cited By ~ 50

Author(s):

Jolien B. Veneman ◽

Stefan Muetzel ◽

Kenton J. Hart ◽

Catherine L. Faulkner ◽

Jon M. Moorby ◽

...

Keyword(s):

Dairy Cows ◽

Methane Production ◽

Enteric Methane

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Advanced estimation and mitigation strategies: a cumulative approach to enteric methane abatement from ruminants

Journal of Animal Science and Technology ◽

10.5187/jast.2019.61.3.122 ◽

2019 ◽

Vol 61 (3) ◽

pp. 122-137 ◽

Cited By ~ 4

Author(s):

Mahfuzul Islam ◽

Sang-Suk Lee

Keyword(s):

Mitigation Strategies ◽

Enteric Methane

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Reducing GHG emissions through genetic improvement for feed efficiency: effects on economically important traits and enteric methane production

animal ◽

10.1017/s1751731113000888 ◽

2013 ◽

Vol 7 ◽

pp. 303-315 ◽

Cited By ~ 82

Author(s):

J.A. Basarab ◽

K.A. Beauchemin ◽

V.S. Baron ◽

K.H. Ominski ◽

L.L. Guan ◽

...

Keyword(s):

Methane Production ◽

Feed Efficiency ◽

Genetic Improvement ◽

Ghg Emissions ◽

Enteric Methane ◽

Efficiency Effects

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In vitro methane production as influenced by harvest date and level of nitrogen application

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200013223 ◽

2003 ◽

Vol 2003 ◽

pp. 163-163

Author(s):

D. K. Lovett ◽

A. Bortolozzo ◽

P. O’Kiely ◽

P. Conaghan ◽

F. P. O’Mara

Keyword(s):

Methane Production ◽

Production Systems ◽

Livestock Production ◽

Harvest Date ◽

Nitrogen Application ◽

N Level ◽

Grazed Pasture ◽

Enteric Methane ◽

Fertiliser Application

Increasing animal productivity increases daily enteric methane (CH4) emissions but reduces CH4 output per unit of animal production. Irish livestock production systems are characterised by a high dependence on grazed pasture. Increased nitrogen (N) fertiliser application can increase animal productivity through increased intake. The objective of this trial was to assess the effect of N level application and pasture maturity on in vitro methane production.

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