Trade-offs in the externalities of pig production are not inevitable
This study explores how the impacts of pig farming co-vary in different pig production systems across Brazil and the UK. It argues that the externalities (consequences that affect external parties) of pig production have historically been examined in isolation, and trade-offs have never been robustly investigated. Based on 91 widely varying farms, the authors find that no particular farming type, from organic to indoor intensive, free range to woodland - performed well across all the main impact categories examined; greenhouse gas emissions, land-use, antimicrobial use and animal welfare. However, it finds that individual farms performed well across the categories. Therefore the study concludes that efforts to minimise trade-offs should focus on lowering impacts within system types rather than only changing between them.