Funding for this research was provided by:
Agro-scientific Research in the Public Interest (No. 201503134, 201303059)
China Agriculture Research System (No. CARS-39-18)
the major science and technology projects of Gansu Province (No. 17ZD2NC020)
Lanzhou Science & Technology Bureau (No. 2012-2-159)
Text and Data Mining valid from 2019-02-04
Received: 16 July 2018
Accepted: 24 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: All sampling of animals was approved by the Institutional Animal Care and Use Committee of the Gansu Agricultural University under permit NO. 2012–2-159.
: Not applicable.
: Delmer Davis is an employee of Ralco Nutrition Inc. David Casper is an employee of Furst-McNess Company. The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.