Assessment of positive welfare; defining animal-based measures

The overall objective is to identify and validate animal-based measures of positive animal welfare related to different motivational systems. Specific objectives are 1) to create an overview of current potential indicators of positive affect with their level of validation, 2) to validate these potential indicators, and 3) to propose how validated indicators may be used to assess positive welfare on farm in future. The three farm animal groups of focus in this action are pigs, ruminants and poultry.