The objective of this book is to provide a scientifically-based outline for how to evaluate the welfare of pigs at a farm level. Attention is focused on the assessment of the validation of the inferred indicators and parameters, and the validity, reliability and the feasibility of the measuring methods. The book includes mainly animal-based parameters, although other environmentally-based and management-based parameters are also described. These issues are elaborated by well-known experts in their field of work, i.e. fundamental and applied research on all aspects related to the production of...