Funding for this research was provided by:
Ministry of Agriculture, Forestry and Fisheries (NA)
Japan Society for the Promotion of Science (15H04585)
Text and Data Mining valid from 2019-11-15
Received: 14 May 2019
Accepted: 21 September 2019
First Online: 15 November 2019
Ethics approval and consent to participate
: Animal ethics committee approvals were not required, because the experiment plan is within the scope of food production. The use of animals was governed by law and notifications of the Japanese Guidelines for Animal Care and Use and under the administrative guidance of the Ministry of Education, the collaborating institutes followed the rules of the Ethics Committee for the Care and Use of Experimental Animal during the conduct of the animal experiments.
: Not applicable.
: The authors declare that they have no competing interests.