As part of the Sustainable Production and Consumption strategy, The European Commission is establishing the framework for a harmonised assessment of the environmental impact of products (PEF) based on a life cycle approach. This also includes methodologies for foods, including livestock products. The farming stage is by far the largest contributor to the environmental profile of such foods, so it is important to have sound data representing this stage. This report identifies in a Nordic context what primary farm activity data that is perceived relatively easy to collect and what supplementary data and life cycle inventory analysis data (LCI) that are needed. It is concluded that there is in particular a need for LCI’s for feeds produced in the Nordic countries and for recruitment animals in different livestock systems, and a relevant granularity for such datasets are proposed.