About the Authors

Julia Steinhoff-Wagner

Affiliation Institute of Nutritional Physiology “Oskar Kellner”, Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany

Ulrike Schönhusen

Affiliation Institute of Nutritional Physiology “Oskar Kellner”, Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany

Rudolf Zitnan

Affiliation Institute of Nutrition, National Centre of Agriculture and Food Nitra, 04181 Kosice, Slovakia

Monika Hudakova

Affiliation School of Economics and Management in Public Administration, 85104 Bratislava, Slovakia

Helga Pfannkuche

Affiliation Institute of Veterinary-Physiology, Leipzig University, 04103 Leipzig, Germany

Harald M. Hammon

hammon@fbn-dummerstorf.de

Affiliation Institute of Nutritional Physiology “Oskar Kellner”, Leibniz Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HMH US JSW. Performed the experiments: JSW, US HMH. Analyzed the data: US RZ MH HP. Contributed reagents/materials/analysis tools: HMH RZ HP. Wrote the paper: HMH JSW HP RZ.