Article History
Received: 8 April 2019
Accepted: 25 August 2019
First Online: 2 September 2019
Ethics approval and consent to participate
: This study was approved by the Animal Ethics Committee of Henan Academy of Agricultural Sciences (Approval number SYXK 2014–0007). Experimental protocols for obtaining bovine clinical samples used in this study were carried out in strict accordance with the Animal Ethics Procedures and Guidelines of China. The sample collection work was approved by the cattle farm owner.
: Not applicable.
: The authors declare that they have no competing interests.