Funding for this research was provided by:
National Key Research and Development Program of China (2018YFD0502100)
China Scholarship Council – The University of Western Australia Joint Scholarship (201708320259)
Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Received: 10 July 2018
Accepted: 27 December 2018
First Online: 21 January 2019
: All the procedures for the treatment and care of experimental cows were approved by the Yangzhou University Animal Care and Use Committee (Jiangsu, China) and followed the guidelines for animal welfare established by this committee.
: Not applicable.
: The authors declare that they have no competing interests.