Funding for this research was provided by:
the Key Project in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (2015BAD11B01)
the earmarked fund for the China Agriculture Research System (CARS-37)
Received: 21 November 2018
Accepted: 16 June 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: The study executed by Dr. Jili Zhang and Dr. Jiyu Zhang was conducted between February and May 2017 in Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Lanzhou, Gansu Province, China. Eight cattle were used in this study. All experimental methods, animal care and the barn environment of this study strictly complied with the Guide for the Care and Use of Laboratory Animals, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, China. In addition, all efforts were made to minimize suffering. Thus, we agreed to conduct the experiment, and the certificate number was SCXK (Gan) 2014–0002.
: Not applicable
: The authors declare that they have no competing interests.