Li, Xiangdong
Qiao, Mingming
Sun, Ming http://orcid.org/0000-0001-9662-0973
Tian, Kegong http://orcid.org/0000-0001-5362-1415
Article History
Received: 20 November 2017
Accepted: 30 January 2018
First Online: 3 April 2018
Compliance with Ethical Standards
:
: The authors declare that they do not have any conflict of interest.
: All animal trials were performed in strict accordance with the regulations in the guide for the care and use of laboratory animals of the National Research Center for Veterinary Medicine.