Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Estimation of Livestock Methane Emissions in the Extensive Crop-Livestock Farming Areas of Bale Highland, Oromia, Ethiopia

Version 1 : Received: 1 October 2018 / Approved: 5 October 2018 / Online: 5 October 2018 (15:39:30 CEST)

How to cite: Defar, G.; Mengistu, A.; Berhane, G. Estimation of Livestock Methane Emissions in the Extensive Crop-Livestock Farming Areas of Bale Highland, Oromia, Ethiopia. Preprints 2018, 2018100104. https://doi.org/10.20944/preprints201810.0104.v1 Defar, G.; Mengistu, A.; Berhane, G. Estimation of Livestock Methane Emissions in the Extensive Crop-Livestock Farming Areas of Bale Highland, Oromia, Ethiopia. Preprints 2018, 2018100104. https://doi.org/10.20944/preprints201810.0104.v1

Abstract

The study was conducted in the potential mixed farming areas of Bale highland to estimate livestock methane emissions. Using multi-stage purposive sampling, 156 households of the three wealth groups were selected based on their livelihood assets as described under methodology. Structured questionnaires, focus group discussions, key informants interview and field visits were the employed methods during the study. Feed nutrient balance was estimated based on the demand and supply while the livestock methane emissions were estimated according to the IPCC guidelines. Descriptive statistics and one-way ANOVA tests were used to analyze the data. Cattle were the dominant (84.25%) livestock owned by the households. The estimated enteric CH4 emission rate from mature cattle, growing cattle, sheep >1 year, sheep ≤ 1 year, horse and donkey were significantly (P<0.001) higher for the better wealth group while mature cattle (69.78%) shared the highest rate. Though, higher emission rates credited to the large number of animals in the area, cattle stay crucial to the livelihoods of the households, beside the major sources of CH4. In conclusion, the estimated CH4 emissions should be focus areas of interventions. Therefore, proper husbandry and quality feed supply and promotion of farm level livestock technologies should be practiced wisely to increase productivity and protect the environment from emissions of the livestock sector.

Keywords

Bale highlands; livestock; methane emissions; mixed farming

Subject

Biology and Life Sciences, Biochemistry and Molecular Biology

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