The four Japanese breeds

Kuroge Washu · 黒毛和種 · more than 90% of Japanese Wagyu

Japanese Black accounts for most Japanese Wagyu production and is strongly selected for abundant, finely distributed intramuscular fat. Other beef also contains intramuscular marbling; Japanese Black is distinguished by the amount and fine pattern it can develop.

Many widely exported regional brands require Japanese Black, including Kobe, Miyazaki, Omi, Matsusaka, Kagoshima. Those are places and standards, not separate breeds. Within Japanese Black there are regional bloodlines, of which Tajima, from Hyogo, is the best known because Kobe beef must come from it.

Akage Washu · 褐毛和種 · Kumamoto and Kochi

Akaushi means red cattle, and Japanese Brown cattle are red-coated rather than black. The breed is associated particularly with Kumamoto and Kochi.

Japanese Brown is generally described as leaner and less intensely marbled than Japanese Black, but an individual product still needs its own grade and production evidence. In Japan it is tied to Kumamoto and Kochi. Grazing is used in some Aso-area production systems, but neither the Akaushi name nor the Wagyu category proves one universal feeding or raising method.

Akaushi also has a separate American history, since a small herd reached the United States in the 1990s. That is a different story with different rules, and it gets its own page.

Nihon Tankaku Washu · 日本短角種 · rare, northern

Raised mainly in northern Japan, Japanese Shorthorn is generally leaner and less marbled than Japanese Black. Production systems and eating characteristics vary, so the breed name should not be converted into one fixed feeding or flavor claim.

Lower marbling can limit the quality grade, although marbling is only one of the four quality factors. A breed-level tendency is not the grade of an individual carcass.

Mukaku Washu · 無角和種 · small-population breed

Japanese Polled is naturally hornless and associated with Yamaguchi Prefecture. It represents a small part of Wagyu production. A current herd count or claim about where it is available needs a dated breed or livestock source.

We currently have no published venue in the directory disclosing Japanese Polled. That is a statement about this directory, not proof that none is available in the United States.

The ministry’s definition includes crosses between the four. That is what keeps Wagyu a closed category: a Japanese Black crossed with a Japanese Brown is still Wagyu, while a Japanese Black crossed with an Angus is not, however good the beef.

American and Australian programs can include fullblood, purebred, and crossbred cattle. A Wagyu-Angus cross can be sold under an overseas Wagyu program even though it does not meet Japan's domestic four-breed definition. The applicable program and breed content therefore need to be named rather than inferred from the word alone.

How the American and Australian breed vocabulary works.

How many Wagyu breeds are there?

Four. Japan's agriculture ministry defines Wagyu as Japanese Black, Japanese Brown, Japanese Shorthorn, and Japanese Polled, plus crosses between those four. Nothing else qualifies under the Japanese definition, which is why a Wagyu-Angus cross is not Wagyu in Japan even though it is genuine crossbred beef.

Which Wagyu breed am I eating?

Japanese Black accounts for most Wagyu production and is required by many exported regional brands, including Kobe, Miyazaki, Omi, and Matsusaka. But A5 is a carcass grade, not a breed, and a prefecture can produce more than one breed. Use the named regional standard or traceability evidence rather than assuming from A5 alone.

What is Akaushi?

Akaushi is the Japanese Brown breed, one of the four, and the word simply means red cattle. In Japan it is associated with Kumamoto and Kochi. It is leaner than Japanese Black and marbles less intensely, which is the point rather than a shortcoming.

Is one Wagyu breed better than another?

A breed name does not rank a particular cut. Japanese Black is strongly selected for abundant, fine marbling and accounts for most Japanese Wagyu production. The other recognized breeds have different breeding histories and production characteristics; quality still depends on the animal, cut, handling, and the standard being claimed.