Which 猪 breeds come in 纯色?

Club breed standards describe 纯色 for the 切斯特白猪和库内库内猪.

Which breeds disqualify 纯色?

At least one club disqualifies 纯色 in the 朱莉安娜猪.

猪 pattern

One color all over with no pattern or white: self in rabbits, cavies, rats and canaries; a tongue or hoof of one even color.

10 猪 breeds list 纯色. It is in a club standard for 2 breeds. At least one club disqualifies it in 1 breeds.

Breed	CPS	BKPS
切斯特白猪	符合标准 (“solid white”)	No ruling
库内库内猪	No ruling	符合标准 (“coat may be any colour or texture”)

Breed	JPAR
朱莉安娜猪	失格 (“A solid coloration with no spotting”)
塔姆沃斯猪	No ruling
大肚猪	No ruling
大黑猪	No ruling
杜洛克猪	No ruling
红垂肉猪	No ruling
约克夏猪	No ruling
长白猪	No ruling

How 纯色 can appear or change over an animal's life.