Funding for this research was provided by:
National Natural Science Foundation of China (U1136605)
Program for Changjiang Scholar and Innovation Research Team in University (IRT1191)
Innovation Base Cultivation and Development Project-research on precise genetic modification in sheep (Z171100002217072)
Text and Data Mining valid from 2018-06-25
Received: 28 November 2017
Accepted: 6 June 2018
First Online: 25 June 2018
Ethics approval and consent to participate
: Animal use and animal trials in this study have been approved by The Beijing Municipal Committee of Animal Management and The Ethics Committee of China Agricultural University.
: All authors critically revised the manuscript for important intellectual contents and approved the final manuscript.
: The authors declare that they have no competing interests.