Funding for this research was provided by:
National Natural Science Foundation of China (31630074)
National Basic Research Program of China (973 Program) (2016YFD0500506 and 2018YFD0501002)
Beijing Municipal Natural Science Foundation (S170001)
China Agriculture Research System (CARS-35)
the “111” Project (B16044)
Jinxinnong Animal Science Developmental Foundation and Hunan Co-Innovation Center of Animal Production Safety (CICAPS)
Text and Data Mining valid from 2019-05-28
Received: 10 December 2018
Accepted: 2 April 2019
First Online: 28 May 2019
: The animal care and experimental procedures were approved by the China Agricultural University Animal Care and Use Committee (CAU20161014–1). All experimental procedures described followed established guidelines for the care and handling of laboratory animals.
: Not applicable.
: The authors declare that they have no competing interests.