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Shigeshigetani, while virtually
unknown in the United States
and Australia, represents a very
powerful genetic strain of the
Wagyu breed.
Shigeshigetani is Sanjirou’s
half-brother, but more closely
bred than most half-siblings:
Shigeshigetani’s mother is
Suzutani, Sanjirou’s dam. And
Shigeshigetani’s sire is Haruki II
(half-brother of Michifuku, sired
by the same bull, Monjiro 11550).
As noted earlier, Suzutani’s
maternal sire was Shigeshigenami
J10632, and her maternal
grandsire was Shigekanenami,
the bull that made the Kumanami
line famous. The Kumanami
family is known to have extremely
potent marbling genes. (There are
three key families in the Tajima
line: Nakadoi, Okudoi and
Kumanami.)
According to World K’s
Group, who owns the bull,
Shigeshigetani’s progeny have
been absolutely exceptional:
3,800 F1 calves fed 540 days
[ADG = 2.156 lbs].
90 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].
10 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