Funding for this research was provided by:
National Natural Science Foundation of China (31671327)
China Agriculture Research System (CARS-35)
Major Project of Selection for New Livestock and Poultry Breeds of Zhejiang Province (2016C02054-5)
the Program for Changjiang Scholar and Innovation Research Team in University (IRT_15R621)
Anhui Science and Technology Key Project (17030701008)
Text and Data Mining valid from 2019-11-08
Received: 25 April 2019
Accepted: 16 October 2019
First Online: 8 November 2019
: Necessary permission was obtained from the owner of the farm for collecting the samples and using in the next study. No benefit interests between owner and the authors. All animal management and sample collection procedures strictly followed the protocol approved by the Institutional Animal Care and Use Ethics Committee (IACUC) at the China Agriculture University. And the IACUC of the China Agricultural University specifically approved this study (permit number DK996).
: Not applicable.
: The authors declare that they have no competing interests.