Mesures d’atténuation des émissions de gaz à effet de serre en élevage bovin lait et viande
Year: 2017
Type: article
Abstract: Many research works are needed to figure out the contribution of animal production systems to greenhouse gas emissions, evaluate carbon footprint of milk and beef cow and identify levers of reduction. The work led within the framework of MAGES project confirmed that an incorporation of legumes and chicory up to 40% in the diet leads to a reduction of up to 20% of enteric methane emissions. In the livestock buildings, housing of animals on an accumulated liter leads to higher emissions of methane and carbon dioxide. At the scale of the system, the assessment demonstrated that the gross carbon footprint of milk and meat fluctuates between respectively 823 and 1 067 kg CO2/1 000 kg of milk and 16.8 and 11.4 kg CO2/kg of meat. The differences noticed are linked to feed system, cattle management and diet (lipid additives, feed,…) or agronomic practices (dejection management,…). Finally, the storage of carbon, which compensates the emissions up to 80%, is sensitive to grassland management and to climatic conditions. The results provided and the observed variability illustrate that the reduction of the contribution of livestock farming to climate change is possible, even though complementary research work is needed in order to precise the biological mechanisms and the levers.
Source: HAL
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4293333192