Itozuru Doi

Itozuru Doi, tag TF151, is a Takeda Farm ('TF') foundation bull exported to the USA in the 1990s and dispersed into the Australian and Canadian herds. Genetically he is a blend, approximately 50% Tajima, 25% Fujiyoshi and 25% Kedaka, descending from Itokitazuru J1081, one of the important sons of the great Shimane sire Dai 7 Itozakura (his grandsire). His dam, Yasuhime J433313, was sired by Yasumi Doi J10328 out of a Kikuteru Doi daughter, weaving Naka Doi/Kikumi Doi lines into his pedigree. That diversity makes him useful as an outcross that still carries famous Itozakura growth genetics into marbling-heavy herds. His progeny are known for size and carcass weight; among foundation-sire groups his produced some of the heaviest average carcasses (about 457 kg after 21.4 months on feed). With roughly 2,632 Australian-registered progeny, he is a solidly used, growth-oriented foundation sire, though less numerous than the top Tajima marbling bulls. Note on the photograph: period prints of this bull were captioned 'picture of original 151, not the clone' — semen sold from 2009 onward came from a DNA-identical clone after the original bull's death. That catalog quotes an unnamed 'leading Wagyu expert' stating flatly that '151 beat Michifuku in every statistical category in fullblood Wagyu carcasses,' and notes the original was a 2,400 lb bull whose daughters were prized by major Australian breeders for size and maternal traits.