Notice how the ears are erect. Also notice all the extended disqualifications as compared with other pigs, such as Hermaphroditism.. What? Really? Ok guys, back to the breeding board.
Something went way wrong. Yorkshires are Americas typical market hog. By using Yorkshires in many crossbreeding programs, producers are able to extract what they call Hybrid Vigor. Meaning the offspring from these crosses show better muscling and faster weight gains. In the
United States and Canada, this breed is called Yorkshire, however, in England, where the breed originated, it is refered to as the Large White.
The next three breeds are Chester White, Poland China, and Spotted pigs. The official registry is Certified Pedigreed Swine or CPS. This registry was formed in 1997 and has over 1000 Junior and Senior members. The CPS website doesn’t offer the specifics in as much detail as the NSR, but these are all well established old American breeds. The roots of these breeds may have come from Europe, but the development of the breeds was as American as football.
Breed Markings and Registration Requirements
The presence of one or more of the following disqualifies Yorkshire pigs from registry:
1. Less than six teats on a side
2. Any hair other than white on any part of the animal’s body
3. Total blindness
4. Hernia or ruptures
5. Hermaphroditism
6. Cryptorchidism
7. One testicle or any pronounced abnormal condition of the testicles
8. Black spots in the skin are very objectionable and any large spots or
numerous black spots located on any part of the hog makes the pig
ineligible for registry
9. Evidence of an extra dewclaw. However, a small amount of black
pigmentation is allowed on the body of the animal.