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"Breeds of Livestock - Swine Breeds". ansi.okstate.edu. Oklahoma State University Dept. of Animal Science. Ekarius, Carol (2008). Storey's Illustrated Breed Guide to Sheep, Goats, Cattle and Pigs. Storey Publishing. ISBN 978-1-60342-036-5
This is a list of pig breeds usually considered to originate or have developed in Canada and the United States. Some may have complex or obscure histories, so inclusion here does not necessarily imply that a breed is predominantly or exclusively from those countries.
It is a large pig, heavy-jowled, lop-eared and short-legged. [3]: 193 It is among the heaviest of pig breeds: sows average some 240 kg, boars about 50 kg more. [4] The heaviest pig on record is a Poland China named Big Bill, who in Tennessee in 1933 was found to weigh 1158 kg (2552 lb), with a length of about 2.75 m (9 ft). [3]: 173
In 1934 a selection of the hundred best animals from five herds was made, and became the foundation stock for the breed. [4]: 611 A breed society, the National Hereford Hog Registry Association, was formed in that year under the sponsorship of the Polled Hereford Cattle Registry Association, [4]: 611 [6]: 394 and a herd-book was opened.
The Berkshire is a traditional breed of the county of the same name. Until the eighteenth century it was a large tawny-coloured pig with lop ears, often with darker patches. [5]: 551 [6] In the late eighteenth and early nineteenth centuries it was substantially modified by cross-breeding with small black pigs imported from Asia. [5]: 558
A mini pet pig. Vietnamese Pot-bellied pigs, a miniature breed of pig, have been kept as pets in the United States, beginning in the latter half of the 20th century. Pigs are intelligent, social creatures. They are considered hypoallergenic and are known to do quite well with people who have the usual animal allergies. Since these animals are ...
The breed started being used in shows around the 1950s. Durocs are predominantly kept for their meat, and are appreciated for their hardiness and quick but thorough muscle growth. [1] The first pig to have its genome sequenced was a Duroc sow named T.J. Tabasco. [4]
Pigs may refer to members of the domestic pig species Sus domesticus; the Sus genus that includes wild and domestic pigs; or the family Suidae that contains Sus. Lists of pigs include: List of pig breeds; List of suines, species in the suborder Suina, which includes Suidae and Tayassuidae; List of individual pigs; List of fictional pigs