PGgRc is a research consortium that aims to decrease total agricultural emissions of greenhouse gases by 10% per unit of output in 2013 relative to 2004. PGgRc has formed excellent links between the agriculture sector and GHG mitigation research.

Read more about the PGgRc, its foundation and contributions to NZ agricultural greenhouse gas mitigation




Strategies to reduce methane emissions from farmed ruminants grazing on pasture

Bryce M. Buddle, Michel Denis, Graeme T. Attwood, Eric Altermann, Peter H. Janssen, Ron S. Ronimus, Cesar S. Pinares-Patiño, Stefan Muetzel, D. Neil Wedlock, Strategies to reduce methane emissions from farmed ruminants grazing on pasture, The Veterinary Journal, Volume 188, Issue 1, 2011, Pages 11-17, ISSN 1090-0233


Methane emissions from livestock are a significant contributor to greenhouse gas emissions and have become a focus of research activities, especially in countries where agriculture is a major economic sector. Understanding the complexity of the rumen microbiota, including methane-producing Archaea, is in its infancy. There are currently no robust, reproducible and economically viable methods for reducing methane emissions from ruminants grazing on pasture and novel innovative strategies to diminish methane output from livestock are required. In this review, current approaches towards mitigation of methane in pastoral farming are summarised. Research strategies based on vaccination, enzyme inhibitors, phage, homoacetogens, defaunation, feed supplements, and animal selection are reviewed. Many approaches are currently being investigated, and it is likely that more than one strategy will be required to enable pastoral farming to lower its emissions of methane significantly. Different strategies may be suitable for different farming practices and systems

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