Hirashigetayasu (ETJ 001) J2351 was sired by Dai 20 Hirashige J287. His maternal great-grandsire is the distinguished Tajiri-line Tayasudoi.

Hirashigetayasu (ETJ001) J2351’s Kedaka lineage shows strong propensity for growth and balance with a larger frame. An official Japanese progeny test showed that at least 80 percent of his steers would gain A5 grade, the highest given to carcasses in Japan.