Production-Related Traits of Layers Reared in Different Sized Flocks - The Concept of Problematic Intermediate Group Sizes
By L. J. Keeling, M. G. Correia, Department of Animal Environment and Health, Swedish University of Agricultural Sciences, I. Estevez, Department of Animal and Avian Sciences, University of Maryland, and R. C. Newberry, Center for the Study of Animal Well-being, Washington State University.