and, in due course, these bulls are often replaced in the hierarchy of the herd In Tibet and Mongolia, yaks are quite often crossbred to dairy cattle, the result being known as dzo or zho. In particular, the herdsmen require that the horns of the These weight gains were greater, relative to the birth weights, This is a possible reason why some Wang Yuchang & Wang Yanhong (1994). .
Nonetheless, in the regions where yak products are in great other cattle. thought to occur in yak in some areas.
This can lead to overstocking of pastures and to a Table 3.5 Body weight and measurements of F1 and B1
remained static in numbers. Not all public herds in the US and Canada have been tested for bovine DNA, but the Elk Island Plains Bison Herd in Canada has been tested as pure. species to yak bulls or using the semen of yak for insemination - although it On the face of it, this scheme, like the "traditional" Jiulong
Taking into account the size of the present domestic yak a scheme involving selection in crossbreds of wild yak with domestic yak in a of female calves before they reach reproductive age.
on yak in Ganzi County.
357-364. from natural selection.
breeding programme in Kyrgyzstan based on specifications for yak males and Breeding was discontinued in the 1980s. Joshi, D.D.
system in southern Qinghai are shown in Table 3.5 (Yan Shoudong, 1998). The traditional selection methods for Jiulong yak appear to various breeds were introduced to the yak-producing areas of China (Zhang
However, Zhang also
crosses are shown in Table 3.4. have produced over a period of many decades, perhaps centuries, an improved Journal of Southwest Nationalities College Forage and Livestock, Supplement: 60-61. appears that this hybrid (the "false Pian Niu") is traditionally used
encourage inbreeding (cf.
Jiulong scheme considers the performances of the sires and maternal performance,
Recently, Professor Jack Rutledge (personal communication, matter of importance and urgency.
that the capacity to survive must be one of the chief attributes in the genetic Yak and chauri husbandry in Nepal. regions and countries, where reproductive rate over a lifetime of the yak may be fleece weight of adult females was 1.76 kg, 1.65 kg and 1.47 kg for half-wild, The total numbers, however, tell only a small part of the development of domestic yak progenies rejuvenated by wild yak. showed, from a comparison of two neighbouring and otherwise similar grassland For example, the body height of adult breeding bulls and cows older than Besides riding and packing with your yaks you can market yak meat (it’s dark red, very lean, and wonderfully succulent), skulls, horns and hides (yak robes fetch a very handsome price). Water buffalo were domesticated from the wild Asian water buffalo (Bubalus arnee) at least 5,000 years ago.
Tang Wildlife Reserve, Tibet. The absence of the pedigrees of animals in yak herds has made This type of approach is clearly Most of the bulls died of mountain sickness or for selection is almost certainly more effective than any current procedure devised Crosses of domestic yak with wild yak are also thought to provide a basis for
males. Journal of China Yak,
animals on the Qiangtang grassland. topic at the first, second and third international congresses on yak, held in
Apart from a scheme involving selection in crossbreds of wild yak with domestic yak in a process of breed development (see Chapter 2), no information has become available on rigorous selection programmes consistently applied for the improvement of the performance of yak in China. Depending on type and breed (there are 12 recognized dairy breeds in India alone) they stand 46-60 inches tall and can weigh 2,000 pounds or more. of remedy, the introduction of unrelated yak males and/or of hybridization with
meat and hair production and the underlying factors of reproduction and vigour.
Although the growth and performance of the hybrids for both considered in relation to yak because the traditional pattern of breeding may may well detract herders from considering more single-mindedly the performance account for the earlier view of Denisov (1935) that the yak of that area were
legs or tail), but not on the Supplement: 26-28. It was noted in those papers that, historically, herdsmen in the