Life cycle assessment (LCA) of poultry meat production
摘要
Livestock farming has been recognized as producing significant environmental impacts. These include a significant role in global warming through greenhouse gas (GHG) emissions, substantial resource utilization, including land use change, nutrient leakage, water use and impacts on biodiversity (Steinfeld et al. 2006, FAO 2006, 2020, Gerber et al. 2013). Emissions and impacts from agriculture arise from diverse direct and indirect sources and can be challenging to address effectively. For instance, ruminant production generates substantial direct methane emissions (via enteric fermentation) and necessitates vast areas of grazing land which then contribute to global warming via deforestation.