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Kjaer, J B; Würbel, Hanno; Schrader, L (2015). Perseveration in a guessing task by laying hens selected for high or low levels of feather pecking does not support classification of feather pecking as a stereotypy. Applied animal behaviour science, 168, pp. 56-60. Elsevier 10.1016/j.applanim.2015.04.014
Stratmann, Ariane; Fröhlich, E K; Gebhardt, Sabine; Harlander-Matauschek, Alexandra; Schrader, L; Toscano, Michael Jeffrey; Würbel, Hanno; Gebhardt-Henrich, Sabine (2015). Soft perches in an aviary system reduce incidence of keel bone damage in laying hens. PLoS ONE, 10(3), e0122568. Public Library of Science 10.1371/journal.pone.0122568
Casey-Trott, T; Heerkens, J L T; Petrik, M; Regmi, P; Schrader, L; Toscano, Michael Jeffrey; Widowski, T (2015). Methods for assessment of keel bone damage in poultry. Poultry Science, 94(10), pp. 2339-2350. Poultry Science Association, Inc. 10.3382/ps/pev223
