About the Authors

Martin Schulze

m.schulze@ifn-schoenow.de

Affiliation Institute for Reproduction of Farm Animals Schönow Inc., Bernau, Brandenburg, Germany

Christof Junkes

Affiliation Leibniz Institute for Molecular Pharmacology, Berlin, Germany

Peter Mueller

Affiliation Department of Biology, Humboldt-University Berlin, Berlin, Germany

Stephanie Speck

Affiliation Institute of Animal Hygiene and Veterinary Public Health, University of Leipzig, Leipzig, Sachsen, Germany

Karin Ruediger

Affiliation Institute for Reproduction of Farm Animals Schönow Inc., Bernau, Brandenburg, Germany

Margitta Dathe

Affiliation Leibniz Institute for Molecular Pharmacology, Berlin, Germany

Karin Mueller

Affiliation Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany

Competing Interests

The authors' affiliation to the “Institute for Reproduction of Farm Animals Schönow Inc.” does not alter their adherence to PLOS ONE policies on sharing data and materials. There are no restrictions on sharing of data and/or materials.

Author Contributions

Conceived and designed the experiments: MS CJ PM SS KR MD KM. Performed the experiments: MS CJ PM SS KR KM. Analyzed the data: MS CJ PM SS KR KM. Contributed reagents/materials/analysis tools: CJ PM SS MD. Contributed to the writing of the manuscript: MS CJ PM SS KR MD KM.