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sire guide intro

sire guide intro

jvp fukutsuru 068

sire michifuku

sire sanjirou

sire shigeshigetani

sire yasufuku

sire yasufuku

sire takazakura

sire itoshigenami

sire kikutsunudoi

jvp kikuyasudoi 400


sire guide intro

dai 7 itozakura

kitaguni 7-8 J1530

kitaguni jr

tf itohana 2

tf itomichi

sire itoshigefuji

sire itozurudoi

sire guide intro

dai 20 hirashige j287

hirashigetayasu j2351


Sanjirou has the potential to become one of the most influential sires of the Tajima line, having great meat quality, large ribeye area, thick rib and high yields. In the 2006 U.S. Wagyu Sire Summary, Sanjirou ranks third highest in marbling, behind Fukutsuru 068, but ahead of his sire, Michifuku.

Sanjirou is a linebred Yasumi Doi J10328 bull. Yasumi Doi J10328 sired Yasutanidoi J472 and grandsired both Fukutsuru 068 and Yasufuku 930. Sanjirou is out of the prominent Japanese cow Suzutani, who represents one of the most potent bloodlines in Japan. Her great-grandsire, Yasumi Doi J10328, is widely known for his ability to produce excellent meat quality and size. Suzutani’s sire was Tanishige 1526, whose progeny test results demonstrate that he has heritable traits with a BMS score +3.1 (above the national average of +2.1) and a yield grade of 72.7 percent.

Suzutani’s mother was Suzunami and her grandsire was Shigeshigenami J10632, who, though largely unknown in the United States, has a reputation for producing the best genetics in Japan (see Shigeshigetani). Sanjirou’s genetic background suggests that he will have ideal meat production efficiency, with great meat quality, large REA, thick rib and high yield rate.

The World K’s Group has proven this genetic prediction accurate, as reflected by the collection of his progeny data:

6,800 F1 calves fed 540 days [ADG = 2.09 lbs].
88 percent graded 9+ on the Australian scale [grading above 12.9 on a numerical scale, which is three full grades above the highest USDA grade of Prime].
12 percent graded 7-9, on a numerical marbling scale 10-12.9. [On the USDA scale, numbers 7-9 would be considered Prime+ and Prime++.]