Quantifying Pain in Laying Hens: A Blueprint for the Comparative Analysis of Welfare in Animals

by Cynthia Schuck-Paim, Wladimir J. Alonso
August 2021

To effectively improve the lives of the animals under human care, a clear understanding of the impact of living conditions and practices on animal welfare is essential to establish which policies and interventions should be ascribed priority. This new book is an effort in this direction. It presents an analytical framework designed for the description and quantification of the negative affective experiences of animals, which are operationally referred to as ‘pain’ (physical and psychological). The book is the first road-test of the method, applying it to conditions that impact negatively the welfare of egg laying hens.

Topics include the impact of keel bone fractures, injurious pecking, deprivation of motivated behaviors, reproductive diseases, and the cumulative pain endured in different housing systems. It is our hope that the findings emerging from this endeavor contribute towards a more comprehensive understanding of the impact of decisions on the lives of animals, and a platform for debate and collaboration.

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