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The Dexter is an Irish breed of small cattle. [6] It originated in the eighteenth century in County Kerry , in south-western Ireland, and appears to be named after a man named Dexter, who was factor of the estates of Lord Hawarden on Valentia Island .
Polled strains have been developed of many cattle breeds which were originally horned. This has usually been done by crossing with naturally polled breeds, most commonly Angus and Galloway cattle. For example, polled Jersey cattle originated in Ohio sometime prior to 1895. Two strains were developed, the first to appear being founded by crosses ...
Roan is a coat color found in many animals, including horses, cattle, antelope, cats and dogs. It is defined generally as an even mixture of white and pigmented hairs that do not "gray out" or fade as the animal ages. [1] There are a variety of genetic conditions which produce the colors described as "roan" in various species. Bay Roan with ...
[1]: 48 [2]: xxii, 127 A similar colour pattern is seen in the domestic yak [1]: 48 and in some zebuine cattle. [ 3 ] An extreme pale form of the colour-sided pattern is the colour-pointed or 'white park' pattern, seen for example in the White Park , the British White and in some Irish Moiled , where the darker colour is restricted to the ears ...
Cattle breeds fall into two main types, which are regarded as either two closely related species, or two subspecies of one species. Bos indicus (or Bos taurus indicus ) cattle, commonly called zebu, are adapted to hot climates and originated in the tropical parts of the world such as India, Sub-saharan Africa, China, and Southeast Asia.
"The Genetics of Equine Coat Color" Texas A&M University Department of Animal Science Equine Sciences Program, publication HRG-003 (undated). The same group of researchers found that the WW gene complex was also lethal in Dexter cattle, platinum foxes, and bluefrost minks.
Ayrshire Cattle Herd Book Society of Great Britain and Ireland [1] Belted Galloway: Belted Galloway Herd Book: Belted Galloway Cattle Society [1] Galloway: Galloway Herd Book: Galloway Cattle Society of Great Britain and Ireland [1] Devon: Davy's Devon Herd Book: Devon Cattle Breeders' Society [1] Dexter: Dexter Herd Book: Dexter Cattle Society ...
The size of the bovine genome is 2.7 Gb (2.7 billion base pairs). [4] It contains approximately 35,092 [4] genes of which 14,000 are common to all mammalian species. Bovines share 80 percent of their genes with humans; cows are less similar to humans than rodents (humans and rodents belong to the clade of Supraprimates) and dogs (humans and dogs belong to the clade of Boreoeutheria).