Funding for this research was provided by:
National Natural Science Foundation of China (31402054)
Key Project of Agricultural Fine Breeding of Shandong Province (2019LZGC011; 2016LZGC030)
Natural Science Foundation of Shandong Province (ZR2013CM013)
Received: 23 January 2020
Accepted: 16 June 2020
First Online: 26 June 2020
Ethics approval and consent to participate
: All process was completed on the basis of the Guidelines for Care and Use of Laboratory Animals of Shandong Agricultural University and approved by the Animal Ethics Committee of Shandong Agricultural University. We have obtained written informed consent from the animal owner to use these animals in the study.
: Not applicable.
: The authors declare that they have no conflicts of interest concerning this article.