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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++.]
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About Wagyu