Corriedale South Island, where he conducted his work under the encouragement of NZALC superindent, William Soltau Davidson. The breed was developed between 1868 and 1910. As a dual purpose breed of sheep (good for meat and wool), the Corriedale breed was gradually distributed to many of the sheep-raising areas in the world. For example, the first Corriedales were imported to the United States in 1914. The Corriedale was later used as one of the parents of the U.S.-developed Targhee breed. Corriedale sheep also contribute about 50 percent of the genetics used in the Gromark breed of sheep, which were developed in
Rideau Arcott traits they wanted to be expressed in the breed. The research flock was closed in 1974, and the breed was distributed to shepherds beginning in 1988. The Rideau name is a common one in Ottawa. The latter half of its name is an acronym for the Animal Research Centre in Ottawa. One of only a few livestock breeds developed in Canada, the Rideau is a synthesis of many different breeds. The breed is genetically 40% Finnish Landrace, 20% Suffolk, 14% East Friesian, 9% Shropshire and 8% Dorset Horn; the remaining 9% is Border Leicester, North Country Cheviot, Romnelet and Corriedale.