Marie Schneider,^1,2,*,** Leonie Hart,¹ Eva Gallmann,² Christina Umstätter<sup>3

1</sup>Department of Competitiveness and System Evaluation, Agroscope, CH-8356 Ettenhausen, Switzerland
²Institute of Livestock Systems Engineering, University of Hohenheim, DE-70599 Stuttgart, Germany
³Thünen Institute of Agricultural Technology, Thünen Institute, DE-38116 Braunschweig, Germany

^*Correspondence and current address: Marie Schneider, Lindenfelser Weg 11, 64385 Reichelsheim, Germany, 00491606704744.
^**E-mail address: marieschnellbaecher@oulook.de (M. Schneider).