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Related Experiment Video

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The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals
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Enteric methane emissions in grazing dairy systems.

Kathy J Soder1, Andre F Brito2

  • 1USDA-Agricultural Research Service, Pasture Systems and Watershed Management Research Unit, University Park, PA 16802.

JDS Communications
|July 31, 2023
PubMed
Summary
This summary is machine-generated.

Reducing methane emissions from grazing dairy cows is crucial. This review explores strategies to mitigate enteric methane (CH4) from ruminants in pastoral systems, addressing data collection and management challenges.

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Area of Science:

  • Agricultural Science
  • Environmental Science
  • Animal Science

Background:

  • Livestock systems contribute significantly to agricultural methane (CH4) emissions.
  • Enteric fermentation in ruminants is a primary source of this CH4.
  • Grazing systems are prevalent for dairy cattle globally, presenting unique emission quantification challenges.

Purpose of the Study:

  • To review management strategies for mitigating enteric CH4 emissions in grazing dairy cows.
  • To assess the applicability of these strategies in pastoral dairy systems.
  • To discuss the role of whole-system assessments in evaluating the environmental impact of grazing dairies.

Main Methods:

  • Review of existing literature on CH4 mitigation strategies in ruminant agriculture.
  • Analysis of challenges in data collection for enteric CH4 in grazing systems.
  • Discussion of regulatory and market influences (e.g., organic, grassfed) on grazing dairy management.

Main Results:

  • Emerging technologies are improving the feasibility of gaseous data collection in grazing systems.
  • There is a high demand for robust data sets and cost-effective CH4 mitigation strategies for grazing dairy cows.
  • Grazing systems face specific challenges compared to confinement systems regarding data collection and management.

Conclusions:

  • Effective and economical strategies to mitigate enteric CH4 emissions in grazing dairy systems are needed.
  • Integrating CH4 mitigation into pastoral dairy management requires addressing system-specific challenges.
  • Whole-system assessments are essential for understanding the overall environmental footprint of grazing dairies.