| Breed | n of individuals | 2C7C | 2C7T | 2A7C | |
| Japanese Black | 133 | 0.887 | 0.094 | 0.019 | a |
| Mishima Island cattle | 28 | 0.196 | 0.000 | 0.804 | b |
| Japanese Shorthorn | 23 | 0.870 | 0.130 | 0 | a |
| Holstein | 31 | 0.452 | 0.548 | 0 | c |