Journal article
Methane and Nitrous Oxide Emissions from Cattle Excreta on an East African Grassland
DE Pelster, B Gisore, JK Koske, J Goopy, D Korir, MC Rufino, K Butterbach-Bahl
Journal of Environmental Quality | WILEY | Published : 2016
Abstract
Greenhouse gas (GHG) emission measurements from livestock excreta in Africa are limited. We measured CH and NO emissions from excreta of six Boran () and six Friesian () steers near Nairobi, Kenya. The steers were fed one of three diets (T1 [chaffed wheat straw], T2 [T1 + Meissner - 0.2% live weight per day], and T3 [T1 + calliandra - 0.4% live weight every 2 d]). The T1 diet is similar in quality to typical diets in the region. Calliandra is a leguminous fodder tree promoted as a feed supplement. Fresh feces and urine were applied to grasslands and emissions measured using static chambers. Cumulative 28-d fecal emissions were 302 ± 52.4 and 95 ± 13.8 mg CH-C kg dry matter for Friesen and Bo..
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Awarded by Deutsche Gesellschaft fur Internationale Zusammenarbeit (GIZ)
Funding Acknowledgements
The authors thank the CGIAR Research Program on Climate Change, Agriculture, and Food Security (CCAFS) and its Standard Assessment of Mitigation Potential and Livelihoods in Smallholder Systems (SAMPLES) programme as well as the Deutsche Gesellschaft fur Internationale Zusammenarbeit (GIZ) project on "In situ assessment of GHG emissions from two livestock systems in East Africa" Project No. 81180349 for technical support and financial support of scientists and laboratories, and Marko Kvakic, Suzanne Jacobs, and George Wanyama for help collecting and analyzing the field samples.