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2004 Methane and Nitrous Oxide Emissions from Manure Management in South Africa.

Moeletsi ME, Tongwane MI - Animals (Basel) (2015)

Bottom Line: Manure management in livestock makes a significant contribution towards greenhouse gas emissions in the Agriculture; Forestry and Other Land Use category in South Africa.The results show relatively high methane emissions factors from manure management for mature female dairy cattle (40.98 kg/year/animal), sows (25.23 kg/year/animal) and boars (25.23 kg/year/animal).Mitigation options from manure management must be taken with care due to divergent conducive requirements of methane and nitrous oxide emissions requirements.

View Article: PubMed Central - PubMed

Affiliation: ARC-Institute for Soil, Climate and Water, Private Bag X79, Pretoria 0001, South Africa. moeletsim@arc.agric.za.

ABSTRACT
Manure management in livestock makes a significant contribution towards greenhouse gas emissions in the Agriculture; Forestry and Other Land Use category in South Africa. Methane and nitrous oxide emissions are prevalent in contrasting manure management systems; promoting anaerobic and aerobic conditions respectively. In this paper; both Tier 1 and modified Tier 2 approaches of the IPCC guidelines are utilized to estimate the emissions from South African livestock manure management. Activity data (animal population, animal weights, manure management systems, etc.) were sourced from various resources for estimation of both emissions factors and emissions of methane and nitrous oxide. The results show relatively high methane emissions factors from manure management for mature female dairy cattle (40.98 kg/year/animal), sows (25.23 kg/year/animal) and boars (25.23 kg/year/animal). Hence, contributions for pig farming and dairy cattle are the highest at 54.50 Gg and 32.01 Gg respectively, with total emissions of 134.97 Gg (3104 Gg CO₂ Equivalent). Total nitrous oxide emissions are estimated at 7.10 Gg (2272 Gg CO₂ Equivalent) and the three main contributors are commercial beef cattle; poultry and small-scale beef farming at 1.80 Gg; 1.72 Gg and 1.69 Gg respectively. Mitigation options from manure management must be taken with care due to divergent conducive requirements of methane and nitrous oxide emissions requirements.

No MeSH data available.


Related in: MedlinePlus

N2O emissions from manure management per livestock category for 2004.
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animals-05-00193-f002: N2O emissions from manure management per livestock category for 2004.

Mentions: The total estimated direct N2O emissions from manure management add up to 7.10 Gg (2272 Gg CO2 Equivalent). N2O emissions from manure management were calculated for each livestock category, with commercial beef cattle contributing the most at 1.80 Gg, constituting 25% of the total N2O emissions (Figure 2 and Table 8). The other main contributors are poultry farming and subsistence cattle farming with 1.72 Gg (24%) and 1.69 Gg (24%) respectively. Due to the fact that emissions factors for the lagoon, pasture and liquid/slurry MMS are all zero, emissions from horses and donkeys are infinitesimal while emissions from dairy cattle and pig farming are insignificant.


2004 Methane and Nitrous Oxide Emissions from Manure Management in South Africa.

Moeletsi ME, Tongwane MI - Animals (Basel) (2015)

N2O emissions from manure management per livestock category for 2004.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494408&req=5

animals-05-00193-f002: N2O emissions from manure management per livestock category for 2004.
Mentions: The total estimated direct N2O emissions from manure management add up to 7.10 Gg (2272 Gg CO2 Equivalent). N2O emissions from manure management were calculated for each livestock category, with commercial beef cattle contributing the most at 1.80 Gg, constituting 25% of the total N2O emissions (Figure 2 and Table 8). The other main contributors are poultry farming and subsistence cattle farming with 1.72 Gg (24%) and 1.69 Gg (24%) respectively. Due to the fact that emissions factors for the lagoon, pasture and liquid/slurry MMS are all zero, emissions from horses and donkeys are infinitesimal while emissions from dairy cattle and pig farming are insignificant.

Bottom Line: Manure management in livestock makes a significant contribution towards greenhouse gas emissions in the Agriculture; Forestry and Other Land Use category in South Africa.The results show relatively high methane emissions factors from manure management for mature female dairy cattle (40.98 kg/year/animal), sows (25.23 kg/year/animal) and boars (25.23 kg/year/animal).Mitigation options from manure management must be taken with care due to divergent conducive requirements of methane and nitrous oxide emissions requirements.

View Article: PubMed Central - PubMed

Affiliation: ARC-Institute for Soil, Climate and Water, Private Bag X79, Pretoria 0001, South Africa. moeletsim@arc.agric.za.

ABSTRACT
Manure management in livestock makes a significant contribution towards greenhouse gas emissions in the Agriculture; Forestry and Other Land Use category in South Africa. Methane and nitrous oxide emissions are prevalent in contrasting manure management systems; promoting anaerobic and aerobic conditions respectively. In this paper; both Tier 1 and modified Tier 2 approaches of the IPCC guidelines are utilized to estimate the emissions from South African livestock manure management. Activity data (animal population, animal weights, manure management systems, etc.) were sourced from various resources for estimation of both emissions factors and emissions of methane and nitrous oxide. The results show relatively high methane emissions factors from manure management for mature female dairy cattle (40.98 kg/year/animal), sows (25.23 kg/year/animal) and boars (25.23 kg/year/animal). Hence, contributions for pig farming and dairy cattle are the highest at 54.50 Gg and 32.01 Gg respectively, with total emissions of 134.97 Gg (3104 Gg CO₂ Equivalent). Total nitrous oxide emissions are estimated at 7.10 Gg (2272 Gg CO₂ Equivalent) and the three main contributors are commercial beef cattle; poultry and small-scale beef farming at 1.80 Gg; 1.72 Gg and 1.69 Gg respectively. Mitigation options from manure management must be taken with care due to divergent conducive requirements of methane and nitrous oxide emissions requirements.

No MeSH data available.


Related in: MedlinePlus