Funding for this research was provided by:
National Key Research and Development Program of China (2017YFD0500800)
National Key R &D Program (2016YFD0500800)
China Agricultural Research System (CARS-43-8)
Sichuan Province Research Programs (2017JY0014/2017HH0026)
Received: 9 January 2018
Accepted: 24 July 2018
First Online: 29 August 2018
Ethics approval and consent to participate
: Animal experiments were performed according to Chinese Regulations of Laboratory Animals and the approval license number was SYXK (Chuan) 2014–187, which was approved by the Animal Ethics Committee of Sichuan Agricultural University.
: The authors declare that they have no competing interests.
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