Funding for this research was provided by:
German Federal Ministry of Education and Research (FKZ 0315528E)
Text and Data Mining valid from 2019-05-07
Received: 10 December 2018
Accepted: 23 April 2019
First Online: 7 May 2019
Ethics approval and consent to participate
: We confirm that the collection of blood samples for this study was performed in accordance with the German Animal Protection Law and was approved by the Committee of Animal Welfare at the Institute of Farm Animal Genetics (Friedrich-Loeffler-Institut) and the Lower Saxony State Office for Consumer Protection and Food Safety (No. 33.9–42502-05-10A064).
: Not applicable
: The authors declare that they have no competing interests.
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