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Kiso Horse

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Kiso Horse
Conservation status
Other names
Country of originJapan
Traits
Weight
  • Male:
    450 kg[3]
  • Female:
    300 kg[3]
Height
  • Male:
    134 cm[3]
  • Female:
    132 cm[3]
Kiso horses

The Kiso or Kiso Horse (Japanese: 木曽馬, kiso uma) is one of the eight indigenous horse breeds of Japan. It is the only native horse breed from Honshu, the principal island of Japan.[4] Like most other Japanese native breeds, it is critically endangered.[5]

History

Japanese native horses are thought to derive from stock brought at several different times from various parts of the Asian mainland; the first such importations took place by the sixth century at the latest.[6] Horses were used for farming – as pack-animals although not for draught power; until the advent of firearms in the later sixteenth century, they were much used for warfare.[7]: 67  The horses were not large: remains of some 130 horses have been excavated from battlefields dating to the Kamakura period (1185–1333 AD); they ranged from 110 to 140 cm in withers height.[7]: 67 

The Kiso breed originates from the Kiso Valley and the Kiso Sanmyaku mountain range, in Nagano Prefecture, and the Higashimino region of Gifu Prefecture, in central Honshu.[3][8][9] During the Meiji era (1868–1912) it was severely affected by the breeding programme of the Imperial Japanese Army, which wanted taller horses and ordered that all stallions of the breed should be gelded,[10] and that only imported stallions be used to cover Kiso mares.[11] After the Second World War few pure-bred Kiso horses remained.[12] A single stallion, dedicated to a religious shrine, had escaped castration. His son Daisan-haruyama was born in 1951 and is the foundation stallion of the present-day breed.[11]

In 1899 there were 6823 Kiso horses.[11] Between 1965 and 1976 breed numbers fell from 510 to 32.[5] Registration of the breed began in that year, under the Kiso Pony Conservation Group,[12] which was formed in 1969,[11] and numbers have since slowly recovered.[5] In 2013 the total population was estimated at 150.[9] As a result of this population bottleneck, the effective population size – which has been calculated to be 45.8 – is much lower than the census population.[11][13]

Four distinct sub-populations within the Kiso breed were identified in 2012.[13]

The Kiso Uma no Sato, or "Kiso horse village", at Kaita Kogen below Mount Kiso Ontake, is a centre for the breeding and conservation of the Kiso breed.[4]

Characteristics

The Kiso is a small horse, but mid-sized in relation to other Japanese native breeds.[12] Research published in 2011 found an average height of 131.9 ± 4.4 cm, an average thoracic circumference (girth) of 167.1 ± 10.1 cm and a cannon bone circumference of 18.3 ± 1.0 cm. There was little sexual dimorphism: while males were marginally larger than mares, the difference was not significant. The size of the breed has decreased since 1948; this may be due either to inbreeding or to lessening influence of the foreign stallions used before the War.[11]

The distribution of coat colours in Kiso horses has changed substantially since 1953: in 2011, approximately 93% of those studied were bay or dark bay, and the remainder either chestnut or buckskin dun; in 1953, bay and dark bay made up less than 60%, and there were also small numbers of black, grey and palomino horses. All registered stallions in 2011 were bay. About 66% of the horses studied had a dorsal stripe.[11]

References

  1. ^ Barbara Rischkowsky, D. Pilling (eds.) (2007). List of breeds documented in the Global Databank for Animal Genetic Resources, 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 October 2014.
  2. ^ Breed data sheet: Kiso / Japan (Horse). Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed April 2022.
  3. ^ a b c d e f Breed data sheet: Kiso/Japan. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed October 2014.
  4. ^ a b Kiso: The Forest of the Japanese Cypress. NHK World. Accessed October 2014.
  5. ^ a b c [National Institute of Agrobiological Sciences] (2007). Country Report (For FAO State of the World’s Animal Genetic Resources Process), annex to: Barbara Rischkowsky, D. Pilling (eds.) (2007). 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 October 2014.
  6. ^ Japanese Native Horses. International Museum of the Horse. Archived 22 August 2010.
  7. ^ a b [Editorial Committee Office of the Japanese Country Report, Animal Genetic Resources Laboratory, National Institute of Agrobiological Sciences, Japan] ([n.d.]). Country Report (For FAO State of the World’s Animal Genetic Resources Process); annex to: Barbara Rischkowsky, D. Pilling (editors) (2007). 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 July 2017.
  8. ^ Elwyn Hartley Edwards (1994). The encyclopedia of the horse. London; New York; Stuttgart; Moscow: Dorling Kindersley. ISBN 0751301159. p. 210–11.
  9. ^ a b Masaki Takasu, Nana Nagatani, Teruaki Tozaki, Hironaga Kakoi, Masami Maeda, Tetsuma Murase, Harutaka Mukoyama (2013). Hematological and Biochemical Reference Values for the Endangered Kiso Horse. Journal of Equine Science 24 (4): 75–78. doi:10.1294/jes.24.75.
  10. ^ C.W. Nicol (5 July 2014). Entertaining guests with a little horseplay. Japan Times. Accessed October 2014.
  11. ^ a b c d e f g Masaki Takasu, Nana Hiramatsu, Teruaki Tozaki, Hironaga Kakoi, Telhisa Hasegawa, Masami Maeda (2011). Population statistics and biological traits of endangered Kiso horse. Journal of Equine Science 22 (4): 67–72. doi:10.1294/jes.22.67.
  12. ^ a b c Taro Obata, Hisato Takeda, Takao Oishi (1994). Japanese native livestock breeds. Animal Genetic Resources Information 13: 11-22.
  13. ^ a b Masaki Takasu, Nana Hiramatsu, Teruaki Tozaki, Hironaga Kakoi, Takeru Nakagawa, Telhisa Hasegawa, Masami Maeda, Tetsuma Murase, Harutaka Mukoyama. (2012). Genetic characterization of the endangered Kiso horse using 31 microsatellite DNAs. Journal of Veterinary Medical Science 74 (2): 161-166.
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