Funding for this research was provided by:
Young Scientists Fund (31501986)
Fundamental Research Funds for Central Universities (KJQN201611)
Earmarked Fund for Jiangsu Agricultural Industry Technology System (SXGC287)
Fundamental Research Funds for Central Universities (KYDS201809)
Text and Data Mining valid from 2019-02-13
Received: 27 August 2018
Accepted: 9 January 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: This protocol of this study was approved by the Committee of Animal Research Institute (Certification No. SYXK (Su) 2011–0036), Nanjing Agricultural University, China. The studies were conducted in the Animal Research Facility at Nanjing Agricultural University, China.
: Not applicable.
: The authors declare that they have no competing interests.