Funding for this research was provided by:
National Key Research & Development Program of China (2018ZX10101002, 2017YFD0500304, 2016YFC1202002)
National Natural Science Foundation of China (81560338, U1503283)
State Key Laboratory of Veterinary Etiological Biology (SKLVEB2017KEKT009)
International Scientific and Technological Cooperation in Bingtuan (2016AH001)
Received: 28 April 2018
Accepted: 24 July 2018
First Online: 4 August 2018
: This study was approved by the Animal Ethics Committee of Shihezi University (Approval No. AECSU2014-03).
: Not applicable.
: The authors declare that they have no competing interests.
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