Funding for this research was provided by:
Earmarked Fund for China Agriculture Research System (31671787)
Chongqing Herbivorous livestock Industry Technology System (Y201706)
Article History
Revised: 17 January 2021
Accepted: 22 January 2021
First Online: 8 February 2021
Compliance with ethical standards
:
: Authors declare that there is no conflict of interest.
: Not applicable.
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