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Zwartbles are now mainly used to produce breeding stock, meat and wool. Being from a cold, wet, windy area of the Netherlands, the breed has easily adapted to the UK climate and can thrive at various altitudes. They are increasingly popular with both smallholders and commercial farmers.
The term refers to both breeds and strains that are naturally polled through selective breeding and also to naturally horned animals that have been disbudded. [1] Natural polling occurs in cattle , yaks , water buffalo , and goats , and in these animals it affects both sexes equally; in sheep , by contrast, both sexes may be horned, both polled ...
Sheep have a breeding season (tupping) in the autumn, though some can breed year-round. [1] As a result of the influence of humans on sheep breeding, ewes often produce multiple lambs. This increase in lamb births, both in number and birth weight, may cause problems with delivery and lamb survival, requiring the intervention of shepherds. [2]
Navajo-Churro sheep at the San Francisco Zoo with four horns. Churros are small sheep with long, thin tails, horizontal ears, [1] and a double coat. Ewes are 40–60 kg (88–132 lb), while rams are 55–85 kg (121–187 lb). The sheep are long-lived and can be productive for up to 15 years. [2]
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 colors of Greenlandic sheep are inherited in a similar way to those of other sheep, but they display more variety in color and pattern than most other breeds, and there are some variations not seen in other sheep. Each sheep carries three genes that affect the color of the sheep, and for each gene, there are dominant and recessive alleles ...
After many attempts and selective breeding of the two sheep, a consistent badger-faced color pattern was found and the California Variegated Mutant was born. Mr. Eidman bred sheep for over 15 years without selling off any stock. [3] In 1982, Mr. Eidman's flock of 75 sheep were dispersed to many different buyers throughout the United States.
At the start of the 20th century, Dalarna had a population of sheep with long wool, which was popular in the area for decorating national costumes. [3] In 1915, breeding was done to obtain sheep that produced this "rya-wool". [3] [7] The rya sheep is a medium-sized sheep with relatively short legs, and has strong and shiny long wool fibers. [3]