Measuring methane emissions from dairy farms

Publication date: 27-03-2026
Extent: 60 pages

Contributions by: Luís O. Tedeschi, Texas A&M University, USA; Marcos I. Marcondes, William H. Miner Agricultural Research Institute, USA; Sushil Paudyal, Texas A&M University, USA; André F. Brito, University of New Hampshire, USA; and Hugo F. Monteiro, Cornell University, USA

Chapter synopsis:

Methane (CH₄) emissions from dairy farms significantly contribute to greenhouse gas emissions, with enteric fermentation responsible for 90% of livestock-derived CH₄ emissions, while manure management accounts for about 41% of the CH₄ emissions. This paper explores various methods for measuring CH₄ emissions at both the animal and farm levels, highlighting the need for accurate, cost-effective, and practical approaches. Traditional methods, such as respiration chambers and the sulfur hexafluoride (SF₆) tracer technique, offer precise measurements but can be costly and labor-intensive. Emerging technologies provide promising alternatives, including portable detectors, laser sensors, and microbial profiling. Strategies for mitigating CH₄ emissions, such as dietary manipulation and manure management, are discussed. Integrating these technologies with precision agriculture offers new opportunities for reducing the environmental impact of dairy farming while maintaining productivity. This paper highlights the importance of developing reliable methodologies to quantify CH₄ emissions, which is crucial for the sustainability of dairy operations.

DOI: 10.19103/AS.2025.0157.08