Funding for this research was provided by:
The Special Fund for Agro-scientific Research in the Public Interest (201403047)
Text and Data Mining valid from 2018-08-16
Received: 21 January 2018
Accepted: 6 June 2018
First Online: 16 August 2018
: All procedures in the present study involving animals were approved by the Animal Care and Use Committee of Sichuan Agricultural University (Chengdu, China).
: The authors declare that they have no competing interests.