Funding for this research was provided by:
The NARO Bio-oriented Technology Research Advancement Institution (27008BC)
The Japan Racing and Livestock Promotion
Received: 1 July 2020
Accepted: 28 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: All animal experiments were conducted according to the guidelines for the care and use of laboratory animals of the Shirakawa Institute of Animal Genetics, Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, and the University of the Ryukyus. This research was approved by Shirakawa Institute of Animal Genetics Committee on Animal Research (H21–2) and the Committees on Ethics in Animal Experiments in the University of the Ryukyus (A2018128). We obtained written agreement from the cattle owners to use the samples and data.
: Not applicable.
: The authors declare no conflict of interest.