A cross-sectional survey and a prospective cohort study will be carried out on about 75 farms across eight different European countries. Environmental impacts are assessed using both Life Cycle Assessment and calculations of nutrient balances at farm and outdoor area level. Animal health and welfare will be evaluated from outcome measures of clinical scoring and selected behavioural parameters. Results will be fed back to farmers as benchmarking reports, based on which the farmer will decide farm specific goals and strategies to achieve these. General management and production strategies for environmental improvement will if possible be identified and disseminated.