Received: 5 December 2019
Accepted: 27 February 2020
First Online: 18 May 2020
: All procedures were approved by the Wageningen Animal Ethics Committee (Wageningen, The Netherlands; accession number 2013023.f) and carried out according to the guidelines of the European Council Directive 86/609/EEC dated November 1986.
: Not applicable.
: The authors declare that they have no competing interests.