Funding for this research was provided by:
Received: 11 March 2019
Accepted: 16 May 2019
First Online: 24 May 2019
Ethics approval and consent to participate
: All sampling techniques and the study protocol were revised and ethical approval to conduct the studies was obtained from the Ethical Committee of the Faculty of Veterinary Medicine, Ghent University (ethical committee approval number EC2016–89). Calves were owned by individual farmers and informed consent was obtained verbally from all owners of the animals. After the study all calves remained on the farm, no animals were sacrificed for this study.
: Not applicable.
: The authors declare that they have no competing interests.
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