Funding for this research was provided by:
Special Fund for Agro-scientific Research in the Public Interest (201303119)
National Key Program of Research and Development, Ministry of Science and Technology (2016YFC0503200)
National Natural Science Foundation of China (31821001)
Cardiff University and the Chinese Academy of Sciences President’s International Fellowship Initiative (no)
the Young Sanjin Scholars Distinguished Professor program (no)
the Aid Program for Innovation Research Team in Shanxi Agricultural University (CXTD201201)
Second Tibetan Plateau Scientific Expedition and Research Program (2019QZKK0501)
Special Fund for Agro-scientific Research in the Public Interest (No. 201303119))
FONDECYT grant CONICYT of Chile (1140785)
Received: 8 October 2019
Accepted: 21 June 2020
First Online: 2 July 2020
Ethics approval and consent to participate
: All animals were handled and treated according to the alpaca guidelines approved by the Animal Ethics Committee [2017(55)] at Shanxi Agricultural University (Taigu, Shanxi, China).
: Not applicable.
: The authors declare that they have no competing interests.