Funding for this research was provided by:
Qinghai province Major R&D and Transformation Project (NMSY-2018-07)
Xianyang Science and Technology Major Project (2017K01-34)
Key industrial innovation chains of Shaanxi province (2018ZDCXL-NY-01-06)
PhD research startup fund of Northwest Agriculture and Forestry University (00500/Z109021716)
Text and Data Mining valid from 2019-07-17
Received: 13 April 2019
Accepted: 8 July 2019
First Online: 17 July 2019
Ethics approval and consent to participate
: All the animal procedures used in the present study were approved by the Research Ethics Committee of Northwest A&F University. Not applicable for consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.