Funding for this research was provided by:
the Planned Program of Hunan Province Science and Technology Innovation (2018RS3085)
the Training Program for Excellent Young Innovators of Changsha (KQ1802035)
Text and Data Mining valid from 2019-10-28
Received: 28 August 2019
Accepted: 22 October 2019
First Online: 28 October 2019
Ethics approval and consent to participate
: All procedures involving animals in the present study were approved and this study was approved by the Animal Ethics Committee of Hunan Agricultural University (No. 43321503).
: Not applicable.
: The authors declare that they have no competing interests.