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It is documented as far back as the fifteenth century, but the present German name was not used before 1884; the breed standard dates from 1962. In the past there was some cross-breeding with imported sheep: in the nineteenth century with Bergamasca and Cotswold stock, [4]: 940 and in the twentieth century with the Southdown. [3]: 280
The syndrome was an economically significant issue for sheep breeders in the 1980s, [8] but with strict testing and breeding programs it has become less common. [ 8 ] The mutation which causes spider lamb syndrome is found on ovine chromosome 6, [ 9 ] and involves the inactivation of fibroblast growth factor receptor 3 . [ 10 ]
A black sheep stands out from the flock. The Black Sheep from a 1901 edition of Mother Goose by William Wallace Denslow. In the English language, black sheep is an idiom that describes a member of a group who is different from the rest, especially a family member who does not fit in.
Sheep also enter in colloquial sayings and idiom frequently with such phrases as "black sheep". To call an individual a black sheep implies that they are an odd or disreputable member of a group. [172] This usage derives from the recessive trait that causes an occasional black lamb to be born into an entirely white flock. These black sheep were ...
It is a common practice in the commercial sheep industries of Australia, New Zealand, and South America. [16] Average success rates of ET in terms of embryos recovered can vary widely. Each breed will respond differently to the ET process. Typically, white-faced ewes and dogs are more fertile than black-faced ewes.
Domestication has been defined as "a sustained multi-generational, mutualistic relationship in which one organism assumes a significant degree of influence over the reproduction and care of another organism in order to secure a more predictable supply of a resource of interest, and through which the partner organism gains advantage over individuals that remain outside this relationship ...
A flock of Black Welsh Mountain sheep. The Black Welsh Mountain sheep (Welsh: Defaid Mynydd Duon, pronounced [ˈdevaɪd ˈmənɪð ˈdɪɔn]) is a colour type of the Welsh Mountain sheep, bred for sheep farming in Wales. It occurs occasionally in flocks of other colours, but is now often maintained as a separate strain.
[8]: 56 His most important contribution to sheep was the development of the Leicester Longwool, a quick-maturing breed of blocky conformation that formed the basis for many vital modern breeds. [ 8 ] : 58 Today, the sheep industry in the UK has diminished significantly, [ 37 ] though pedigreed rams can still fetch around 100,000 Pounds sterling ...