Text and Data Mining valid from 2019-05-28
Received: 3 January 2019
Accepted: 8 May 2019
First Online: 28 May 2019
Compliance with ethical standards
: As only blood samples were collected from the sheep, a safe and not really exhaustive animal manipulation for it is usually performed for disease serological routine detection, the ethical approval was not required.
: The authors declare that they have no conflict of interest.