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Dorset on exhibition at Stampede Park, Calgary, Alberta, Canada. The Dorset Horn is an endangered British breed of domestic sheep. It is documented from the seventeenth century, and is highly prolific, sometimes producing two lambing seasons per year. Among British sheep, it is the only breed capable of breeding throughout the winter. [5]: 800
The Dorset Down is a breed of sheep native to the Dorset Downs region of England. It originated in the early 19th century from crosses of local and Hampshire ewes with Southdown rams. [ 1 ] The breed is not closely related to the Dorset (a.k.a. Dorset Horned), which is a white-faced sheep.
The Polled Dorset is an American breed of domestic sheep. It is a polled (hornless) variant of the British Dorset Horn. It was developed at the North Carolina State University Small Ruminant Unit in the 1950s after a genetic mutation led to the birth of a polled ram. After some years of breeding work, a true-breeding polled strain was established.
the Dorset Down, a British sheep breed; the Dorset Horn, a British sheep breed; the Polish Modified Dorset, a Polish sheep breed developed at the University of Life Sciences in Poznań; the Poll Dorset, an Australian sheep breed derived from the Dorset Horn; the Polled Dorset, an American sheep breed derived from the Dorset Horn
The Poll Dorset, a short-wool, meat-producing sheep, was developed in Australia between 1937 and 1954 with the aim of breeding a true Dorset type sheep without horns. The poll gene was introduced into Dorset Horn flocks from two other polled breeds and following a strict back-mating programme achieved close to 100% of Dorset Horn blood.
It nearly became extinct in the 1970s, but has now recovered through efforts of dedicated breeders and the help of the Rare Breeds Survival Trust. [2] It is now listed as "at risk", being a minority breed. [3] As one of the very old tan-faced breeds native to heathlands, the Portland was a primary contributor to the Dorset breed. [4]
A Rough Fell ram. The Rough Fell is an upland breed of sheep originating in England. [1] It is common on fell and moorland farms, its distribution embracing a large proportion of South Cumbria, parts of the West Riding of Yorkshire, North Lancashire and, more recently, upland parts of Devon.
The Teeswater Sheep Breeders' Association was formed in 1949 with the aim to encourage and improve the breeding of Teeswater sheep; to maintain their purity and particularly to establish the supremacy of Teeswater rams for crossing with hill sheep of other breeds for the production of half-bred lambs.