Funding for this research was provided by:
National Natural Science Foundation of China (No. 31402047)
Earmarked Fund for China Agriculture Research System (No. CARS-39)
Project of Shandong Province Higher Educational Science and Technology Program (J18KA136)
Text and Data Mining valid from 2020-02-28
Received: 8 August 2019
Accepted: 20 February 2020
First Online: 28 February 2020
Ethics approval and consent to participate
: All experimental and surgical procedures involved in this study followed the “Guidelines for Experimental Animals” of the Ministry of Science and Technology of China (Beijing, China). Surgery procedures and animal care were in accordance with the recommendations proposed by the European Commission (1997), and were approved by the Experimental Animal Ethics Committee of Qingdao Agricultural University. The written informed consent to participate was obtained from the AFWS Stud Farm of Inner Mongolia Autonomous Region.
: Not applicable.
: The authors declare that they have no competing interests.