“Japanese Polled”的意思、由来-开放百科全书

词条

Japanese Polled

释义

History
Characteristics
References

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| name = Japanese Polled
| image =
| image_alt =
| image_caption =
| status = FAO (2007): critical
| altname = {{ubl|{{lang-ja|無角和種}}|Mukaku Washu|Japanese Poll}}
| country = Japan
| distribution = Yamaguchi Prefecture
| standard =
| use = meat
| maleweight =
| femaleweight =
| maleheight =
| femaleheight =
| skin_colour =
| coat = black{{r|dad}}
| horn = hornless in both sexes
| subspecies =
| note =
}}

The Japanese Polled ({{lang-ja|無角和種}}, Mukaku Washu) is a critically{{hyphen}}endangered breed of small Japanese beef cattle. It is one of six native Japanese cattle breeds,{{r|dad2}} and one of the four Japanese breeds known as wagyū, the others being the Japanese Black, the Japanese Brown and the Japanese Shorthorn.{{r|aajas|page=420}}

All wagyū cattle derive from cross-breeding in the early twentieth century of native Japanese cattle with imported stock, mostly from Europe.{{r|ass|page=5}} In the case of the Japanese Polled, the principal foreign influence was from the Scottish Angus breed.{{r|dad}}

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.{{r|cabi|page=209}} 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.{{r|ass|page=2}}

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 wagyū breeds, the Japanese Polled, the Japanese Black, the Japanese Brown and the Japanese Shorthorn.{{r|ass|page=8}}

The Japanese Polled developed in south-western Honshu, in the prefecture of Yamaguchi.The principal foreign influence was from Scottish Angus cattle.{{r|ass|page=8}}

The conservation status of the Japanese Polled was listed by the FAO as "critical" in 2007.{{r|barb|page=71}} In 1978 the total population was reported to be 2242; in 2008 it was 132.{{r|dad}} Although not at risk of immediate extinction, the breed is in need of emergency measures for its protection. The Japanese Polled Public Corporation has been set up by the administration of Yamaguchi Prefecture to protect and preserve the breed and its genetic resources.{{r|fao|page=45}}

Characteristics

The Japanese Polled is black; both sexes are polled, without horns.{{r|dad}}

References

1. ^Valerie Porter, Lawrence Alderson, Stephen J.G. Hall, D. Phillip Sponenberg (2016). [https://books.google.it/books?id=2UEJDAAAQBAJ Mason's World Encyclopedia of Livestock Breeds and Breeding] (sixth edition). Wallingford: CABI. {{ISBN|9781780647944}}.
2. ^Breed data sheet: Japanese Polled/Japan. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed January 2017.
3. ^Breeds reported by Japan: Cattle. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed January 2017.
4. ^[National Institute of Agrobiological Sciences] (2005). Country Report: Japan, annex to The State of the World's Animal Genetic Resources for Food and Agriculture. Rome: Food and Agriculture Organization of the United Nations. {{ISBN|9789251057629}}. Accessed January 2017.

. Accessed January 2017.^[1]^[2]^[3]^[4]
}}{{Cattle breeds of Japan}}

3 : Beef cattle breeds|Cattle breeds originating in Japan|Cattle breeds

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