Funding for this research was provided by:
National Natural Science Foundation of China (31672512)
the Fundamental Research Funds for the Central Universities (KYZ201212)
the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Text and Data Mining valid from 2019-11-19
Received: 17 May 2019
Accepted: 21 September 2019
First Online: 19 November 2019
Ethics approval and consent to participate
: The Animal Ethics Committee of Nanjing Agricultural University approved the experimental protocol, with project number 31672512. The sampling procedures complied with the “Guidelines on Ethical Treatment of Experimental Animals” (2006) No. 398 set by the Ministry of Science and Technology, China.
: Not applicable.
: The authors declare that they have no competing interests.