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Yakutian cattle, Саха ынаҕа (Sakha ınaga) in the Sakha language, are a cattle landrace bred north of the polar circle in the Republic of Sakha. They are noted for their extreme hardiness and tolerance towards freezing temperatures. == Description == Yakutian cattle are of relatively small size. Cows stand between 110 to 112 cm high at the withers and reach a live weight of 350 to 400 kg, bulls reach a height of 115 to 127 cm and weigh 500 to 600 kg. They have short, strong legs and a deep but relatively narrow chest. The dewlap is well-developed.〔Juha Kantanen (30 December 2009): (″Article of the month – The Yakutian cattle: A cow of the permafrost.″ ) ''GlobalDiv Newsletter'', 2009, issue no. 12, pp. 3–6. 1 picture. Retrieved 30 June 2013.〕〔L.K. Ernst, N.G. Dmitriev (1989): ″Yakut (Yakutskii skot).″ In: N.G. Dmitriev, L.K. Ernst (eds.) (1989): (''Animal genetic resources of the USSR.'' ) FAO Animal Production and Health Paper 65. FAO Corporate Document Repository, Agriculture and Consumer Protection Department, Food and Agriculture Organization of the United Nations (FAO). Pp. 92–93. ISBN 92-5-102582-7. (Pdf-version ). Retrieved 30 June 2013.〕 Their color varies. It can be black, red, or spotted. Most animals have a white dorsal stripe along the back,〔〔Food and Agriculture Organization of the United Nations / Domestic Animal Diversity Information System: (″Yakutskii Skot/Russian Federation.″ ) Retrieved 30 June 2013.〕 and in dark animals the hair between the horns is often reddish-brown. Their large abdomen and long digestive tract allow them to make efficient use both of grass and browse. They grow subcutaneous fat very quickly during the short pasture season and survive under poor feed conditions in winter.〔Алексей Толстяков (Aleksej Tolstyakov): (″Yakutian cow (purebred indigenous species). Native born in Yakutia, Siberia / Russia.″ ) ''eYakutia'', w/out date. 3 pictures. Retrieved 30 June 2013.〕 A number of further traits, such as a thick winter coat, a small, fur-covered udder or scrotum, efficient thermoregulation, and low metabolic rates at low temperatures, lead to the Yakutian cattle’s extreme tolerance towards freezing temperatures.〔〔〔 A compelling example of this is the case of several cows which survived on their own in the taiga forest for three months in late 2011 in deep snows and temperatures reaching as low as –40 °C (–40 °F).〔 Yakutian cattle exhibit resistance to tuberculosis, leucosis, and brucellosis.〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yakutian cattle」の詳細全文を読む スポンサード リンク
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