The pig was know as the Chester County White originally. The Chester White Pig is a breed of large, fatty pigs that originated in the United States of America.This is a domestic breed that actively takes part in commercial crossbreeding operations for pork in the country. Must be ear notched within 7 days of birth.

The Chester White is a breed of domestic pig which originated in Chester County, Pennsylvania.
Usually, the body of the Chester White Pig breed is totally white and the ears of the breed are medium in size and droopy. The Chester White Pig breed is more prolific and the female Chester White pigs are a … The Chester White breed originated in Chester County, Pennsylvania and thereby derived its breed name. Ears … Though not as well-known as the Yorkshire, the Hampshire, or the Duroc pigs, they are a versatile breed and are perfect for both intensive and extensive pig farming. Other articles where Chester White is discussed: livestock farming: Breeds: The Chester White, which originated in Chester county, Pa., after 1818, is restricted to the United States and Canada. Must be solid white in color, no color on the skin larger than a silver dollar, no colored hair. The Chester breed was derived in Jefferson County, New York. Previous to 1812 there were Yorkshire and Lincolnshire animals that had come from England. Any skin pigmentation other than white that exceeds five in number are disqualified. ... or spotted, the colour of the pig will depend on the breed characteristics. It was formerly known as the Chester County White. The Chester White Pig were created from a diversity of imported breeds. Breed Classifications – Effective January 1, 2014 Must possess Chester White Breed characteristics. At first it was called the Chester County White, but later the "county" was dropped. Utah Pork Producers goes on to explain that other characteristics of these animals is a high conception rate, large litters and no stress gene. The Cherokee Animal Clinic lists the characteristics of the Chester White pig being solid white hides and droopy ears.