Funding for this research was provided by:
China Agriculture (Dairy) Research System (CARS-36)
Text and Data Mining valid from 2018-03-14
Received: 24 July 2017
Accepted: 22 January 2018
First Online: 14 March 2018
: The procedures of this study were approved by the Animal Care and Use Committee of Zhejiang University (Hangzhou, China) and were in accordance with the university’s guidelines for animal research.
: Not applicable.
: The authors declare that they have no competing interests.