Английская Википедия:Cambridge (sheep)

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The Cambridge is a modern British breed of domestic sheep.Шаблон:R It was bred at the University of Cambridge by John Owen and Alun Davies between about 1964 and 1979, with the aim of increasing prolificacy.Шаблон:R It is among the most prolific of all sheep breeds, but is critically endangered.Шаблон:R

History

The Cambridge was bred at the University of Cambridge by John Owen and Alun Davies between about 1964 and 1979, with the specific aim of increasing prolificacy. Ewes of a variety of British breeds were put to Finnsheep rams. These ewes were mostly of the Clun Forest breed, but Border Leicester, Hill Radnor, Kerry Hill, Llanwenog, Lleyn and Ryeland stock was also used.Шаблон:RA flock-book was started in 1969, and by 1979 the breed was established.Шаблон:R

Characteristics

The Cambridge is a polled sheep of medium to large size.Шаблон:R It is uniformly brown, with a brown face.Шаблон:R It is a short-wool breed; fleeces weigh some Шаблон:Nobreak with a staple length of about Шаблон:NobreakШаблон:R

Ewes of the breed are among the most prolific of any breed of sheep, with average litter sizes for one-, two- and three-year-old ewes of 1.7, 2.5 and 2.9 respectively.Шаблон:R

Further reading

• J.B. Owen, Sarah R.E. Crees, Janet C. Williams, D.A.R. Davies (1986). Prolificacy and 50-day lamb weight of ewes in the Cambridge sheep breed. Animal Science. 42 (3): 355–363. Шаблон:Doi.
• J.B. Owen, I. Ap Dewi (1988). The Cambridge sheep — its exploitation for increased efficiency of lamb production. Agricultural and Food Science. 60 (6): 585–590. Шаблон:Doi.
• J.B. Owen, C.J. Whitaker, R.F.E. Axford, I. Ap Dewi (1990). Expected consequences of the segregation of a major gene in a sheep population in relation to observations on the ovulation rate of a flock of Cambridge sheep. Animal Science. 51 (2): 277–282. Шаблон:Doi.
• I. Ap Dewi, J.B. Owen, A. El-Sheikh, R.F.E. Axford, M. Beigi-Nassiri (1996). Variation in Ovulation Rate and Litter Size of Cambridge Sheep. Animal Science 62 (3): 489–495. Шаблон:Doi.
• J.B. Owen (1996). The Cambridge breed. In: Mohamed H. Fahmy (editor) (1996). Prolific Sheep. Wallingford: CAB International. Шаблон:Isbn, pages 161–173.