http://orgprints.org/6266/ Laying hen husbandry: group size and use of hen-runs Hirt, Helen Hördegen, Philipp Zeltner, Esther Poultry With regard to welfare reasons, various label productions limit the number of laying hens allowed per flock. The question arose whether the group size has an influence on the use of laying hen runs. 2000 Conference paper, poster, etc. NonPeerReviewed application/pdf http://orgprints.org/6266/1/Hirt-2000-hen.pdf Hirt, Helen; Hördegen, Philipp and Zeltner, Esther (2000) Laying hen husbandry: group size and use of hen-runs. International IFOAM Scientific Conference, Basel, 28 to 31 August 2000. [ Unpublished, ] http://orgprints.org/6266/http://orgprints.org/6266/1/