Guo, Zhenhua
Li, Xiang
Deng, Ruiguang
Zhang, Gaiping
Funding for this research was provided by:
Agriculture Research System of China (CARS-35)
Article History
Received: 11 March 2019
Accepted: 5 June 2019
First Online: 13 June 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Animal Care and Use Committee of Henan Academy of Agricultural Sciences. No specific permissions were required for the collection of samples. All sampling and publication of the data were approved by the farm owners.
: Not applicable
: The authors declare that they have no competing interests.