Most contemporary fullblood production in Japan targets a 500kg progeny carcass (CW) graded to JMGA A4 from 75% or more of total progeny from each sire. Slaughter takes place at approximately 29 months of age, after 600 days on feed (DOF). This contrasts with a standard Australian fullblood 500-600 DOF CW of about 400kg, reflecting both intensive whole-of-life feeding and the use of high-growth/high carcass weight sires in Japan.
Australian Wagyu Forum