Funding for this research was provided by:
Danish Ministry for Food, Agriculture and Fishery (3405-11-0342)
National Institute of Food and Agriculture (ILLU-538–914)
Received: 11 September 2017
Accepted: 23 April 2018
First Online: 3 May 2018
Ethics approval and consent to participate
: Sampling, housing and rearing were in compliance with Danish laws and regulations for the humane care and use of animals in research [The Danish Ministry of Justice, Animal Testing Act (Consolidation Act No. 726 of September 9, 1993, as amended by Act No. 1081 of December 20, 1995)]. Furthermore, the Danish Animal Experimentation Inspectorate approved the study protocols and supervised the experiment.The animals were purchased from Ørgelgaard, DK 7840 Højslev, Denmark.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.