A visitor (left) tours an ILRI Mazingira Centre lab (left),
Mazingira scientist David Pelster (right)
(photo credit: CCAFS/Vivian Atakos).
by Kenyan cattle excreta
are found to be much lower
than estimates derived from
models in industrialized countries. African cattle nitrous oxide (N2O) faecal emissions are 10–20 times lower—
and their faecal methane (CH4) emissions two times lower—
than IPCC estimates now being used to determine
the carbon footprints of African livestock agriculture.
§ § § ‘The diets used in this study were consistent with those used
in smallholder farms in the region and similar in digestible energy
to the low-quality fodder category used
by the IPCC to estimate livestock emissions,
suggesting that emission factors used for
GHG inventories in this region may need to be revised.’
—From the conclusions to the paper
More studies—performed under different climatic seasons,
linked with measurements of enteric fermentation
and with measurements performed over extended periods—
will be needed to confirm these results. § § §
The following is excerpted from ILRI’s Livestock Systems and Environment blog site:
‘For a long time, African countries have relied on default emission factors provided by the UN Intergovernmental Panel on Climate Change (IPCC), to develop strategies on reductions of greenhouse gas (GHGs) emissions. This is because there are very limited GHG measurements from cropping and livestock systems in most developing countries. However, there has been a growing concern on the applicability (or lack thereof) of data from IPCC to sub-Saharan African agricultural systems, and the subsequent development of mitigation interventions that may not be tailored to these systems. . . .
‘Part of the research at the International Livestock Research Institute (ILRI) focuses on understanding and managing the environmental footprint of livestock. At ILRI’s Mazingira Centre, this research aims to provide accurate context-specific information on the environmental impacts, particularly on nutrient cycles and GHG emissions of current livestock production systems, to enable predictions of intensification in these systems, and opportunities to mitigate GHG emissions. . . .’In an important first for Kenya,
research from ILRI’s Mazingira Centre
has generated greenhouse gas data
measured and analyzed for Kenya, in Kenya.
The Mazingira Centre is a state-of-the-art environmental research and education centre established at the International Livestock Research Institute (ILRI). The goal of the Mazingira Centre (mazingira is the Kiswahili word for ‘environment’) is to enhance the infrastructure and capacity for environmental research in East Africa with a focus on livestock systems and land use change. It has capacity to measure and analyze environmental parameters brought about by agricultural and livestock production. Established in 2014 and now fully operational, the centre promises a step change in Africa’s environmental research infrastructure and capacity.
Read the full ILRI article about this new paper on ILRI’s Livestock Systems and Environment blog: Greenhouse gas emissions from livestock waste in East Africa are significantly lower than global estimates: New study reveals, 16 Jun 2016.
Access the ILRI paper here: Methane and nitrous oxide emissions from cattle excreta on an East African grassland, by David Pelster, Betty Gisore, John Goopy, Daniel Korir, James Koske, Mariana Rufino and Klaus Butterbach-Bahl.
For further information about the study and Mazingira Centre, contact Lutz Merbold (L.Merbold[at]cgiar.org) or David Pelster (D.Pelster [at] cgiar.org).
The CGIAR Research Program on Climate Change, Agriculture, and Food Security (CCAFS) and the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) project on ‘In situ assessment of GHG emissions from two livestock systems in East Africa’ provided technical and financial support for this ILRI project.