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Communication Dans Un Congrès Année : 2012

Greenhouse gas budget of an organic broiler production system in France

Résumé

This paper presents the greenhouse gas (GHG) budget of an organic broiler production system in France, composed of a broiler house and an outdoor run. The study was conducted over 1 year on an experimental farm. In the broiler house, emissions of N2O and CH4 were measured using photo-acoustic infrared spectrometry and air flow rates were estimated using SF6 as tracer gas. On the outdoor run, N2O and CH4 fluxes were measured using static chambers. Spatial and temporal gap-filling methods were used to provide annual estimates of emissions. In the broiler house, CH4 and N2O annual emissions from manure represented about 49 and 71 g CO2-equivalents (CO2-eq.)/kg live weight (LW), while non-biotic CO2 emissions (heating) represented about 68 g CO2-eq./kg LW, suggesting that manure accounted for about 65% of total indoor CO2-eq. emissions. On the outdoor run, N2O emissions were estimated to 86 g CO2-eq./kg LW, while CH4 emissions were found negligible (-1 g CO2-eq./kg LW). However, long-term C sequestration on the outdoor run should be investigated since measured short-term variations in soil organic carbon suggested that the run could display a sink activity and thus compensate for a portion of GHG emissions.
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Dates et versions

hal-01209200 , version 1 (02-10-2015)

Identifiants

  • HAL Id : hal-01209200 , version 1
  • PRODINRA : 267095

Citer

Bertrand Méda, Christophe Flechard, Karine Germain, Christian Walter, Paul Robin, et al.. Greenhouse gas budget of an organic broiler production system in France. EmiLi 2012 International Symposium on Emissions of Gas and Dust from Livestock, Jun 2012, Saint-Malo, France. pp.73-76. ⟨hal-01209200⟩
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