About the Authors

Christian Nawroth

Affiliation Department of Animal Husbandry and Ecology, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University, Halle, Germany

Eberhard von Borell

Affiliation Department of Animal Husbandry and Ecology, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University, Halle, Germany

Jan Langbein

langbein@fbn-dummerstorf.de

Affiliation Institute of Behavioural Physiology, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CN EB. Performed the experiments: CN JL. Analyzed the data: JL CN. Contributed reagents/materials/analysis tools: JL EB. Wrote the paper: CN JL EB.