This one report from the European Research Centre (JRC) analyses the adoption of greenhouse gas emission reduction technologies by EU farmers, focusing on two case studies: the use of a breeding index in dairy farming in Poland and the use of multi-phase feeding in pig farming in France. The study examines the extent of adoption of these measures, the factors influencing farmers' decisions and their potential impact on greenhouse gas emissions. The results show a link between farm size, farmer characteristics and technology adoption. The report also analyses the economic and environmental consequences of these measures and suggests measures to promote their wider adoption. Spring