New standards on resources and emissions will help national authorities across the EU to lower the environmental impact of around 20 000 large poultry and pig farms. The new specifications stem from the review of the Best Available Techniques (BAT) Reference Document for the intensive rearing of poultry and pigs (IRPP), the so-called IRPP BREF, whose conclusions were published on 21 February 2017 in the Official Journal of the EU.