Japanese Black

The Japanese Black (黒毛和種, Kuroge Washu) is a breed of Japanese beef cattle. It is one of six Japanese cattle breeds, and one of the four Japanese breeds known as wagyu, the others being the Japanese Brown, the Japanese Polled and the Japanese Shorthorn. All wagyu cattle derive from cross-breeding in the early twentieth century of native Japanese cattle with imported stock, mostly from Europe. In the case of the Japanese Black, the foreign influence was from European breeds including Braunvieh, Shorthorn, Devon, Simmental, Ayrshire and Holstein.

History
Cattle were brought to Japan from China at the same time as the cultivation of rice, in about the second century AD, in the Yayoi period. Until about the time of the Meiji Restoration in 1868, they were used only as draught animals, in agriculture, forestry, mining and for transport, and as a source of fertiliser. Milk consumption was unknown, and – for cultural and religious reasons – meat was not eaten. Cattle were highly prized and valuable, too expensive for a poor farmer to buy.

Japan was effectively isolated from the rest of the world from 1635 until 1854; there was no possibility of intromission of foreign genes to the cattle population during this time. Between 1868, the year of the Meiji Restoration, and 1887, some 2600 foreign cattle were imported. At first there was little interest in cross-breeding these with native stock, but from about 1900 it became widespread. It ceased abruptly in 1910, when it was realised that, while the cross-breeds might be larger and have better dairy qualities, their working capacity and meat quality was lower. From 1919, the various heterogeneous regional populations that resulted from this brief period of cross-breeding were registered and selected as "Improved Japanese Cattle". Four separate strains were characterised, based mainly on which type of foreign cattle had most influenced the hybrids, and were recognised as breeds in 1944. These were the four wagyu breeds, the Japanese Black, the Japanese Brown, the Japanese Polled and the Japanese Shorthorn.

The Japanese Black developed in south-western Japan, in the prefectures of Kyoto and Hyogo in the Kansai region; of Hiroshima, Okayama, Shimane, Tottori and Yamaguchi in the Chūgoku region; of Kagoshima and Oita on the island of Kyūshū; and of Ehime on the island of Shikoku.

Among the European breeds which influenced its development were Braunvieh and Simmental cattle from Switzerland, Ayrshire, Devon and Shorthorn stock from the United Kingdom, and Holstein cattle from Germany and the Netherlands.

In 1960 the total breed population was reported to be over $1,800,000$; in 2008 it was reported as about $707,000$. In 1999, the Japanese Black constituted about 93% of the national beef herd.

Tajima cattle
When registration of "Improved Japanese Cattle" began in 1919, there were notable variations between regional populations. It was left up to the prefectural administration to decide breed objectives. As a result, several different strains or sub-types developed with the Japanese Black population. One of these is the Tajima strain (, Tajima Ushi or Tajima-gyu). Meat from animals of this strain only, raised only in Hyōgo Prefecture, may be approved for marketing as Kobe beef.