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The Suffolk originated in the area surrounding Bury St. Edmunds in Suffolk in the late eighteenth century, as a result of cross-breeding when Norfolk Horn ewes were put to improved Southdown rams. [4]: 923 They were at first known as Blackfaces or Southdown-Norfolks; [5] the first use of the name "Suffolk" for these sheep dates to 1797. In 1810 ...
The White Suffolk was bred by Ewan Roberts, of the University of New South Wales, from 1977.His intention was to create a sheep that had the large size, high ewe fecundity and rapid growth rate of the original British Suffolk, but without the black face and legs and without the occasional dark fibres in the wool which greatly reduced its value in the Australian market.
In addition to lambs and other attendant sheep, the station has a base flock of 3,000 mature sheep. [2] Breeds developed at the U.S. Sheep Experiment Station include: The Columbia, a dual-purpose breed and one of the first originating in the U.S. Early crosses were made in Wyoming, but the originating flock was moved to the USSES in 1918.
Sheep are flock animals and strongly gregarious; much sheep behavior can be understood on the basis of these tendencies. The dominance hierarchy of sheep and their natural inclination to follow a leader to new pastures were the pivotal factors in sheep being one of the first domesticated livestock species. [ 59 ]
The Society for the Experimental Analysis of Behavior was founded in 1957 by a group of researchers in the field of behaviorism. [1] It publishes the Journal of the Experimental Analysis of Behavior and the Journal of Applied Behavior Analysis. The Certificate of Incorporation (dated October 29, 1957) of the society states that:
The Southdown was traditionally reared for meat and wool. During the day the sheep pastured freely on the downs, and at night they were close-folded in the arable fields of the farmers, where they helped to increase soil fertility. [10] Fleece weights (greasy) are about 2–3.5 kg for ewes, 3.5–5.5 kg for rams.
Given the shortage of pure-bred fertile rams (the last pure-bred ram died in 1973), a related breed, the Suffolk, as well as unrelated breeds such as the Wiltshire Horn and Swaledale, were used to breed animals that were more than 90% (15/16ths) Norfolk Horn. In 1986, the breed was recognised by the RBST, appearing on their Priority List at ...
This is a list of sheep breeds usually considered to originate in Canada and the United States. [1] [2] Some may have complex or obscure histories, so inclusion here does not necessarily imply that a breed is predominantly or exclusively from those countries.