Which Konj breeds come in Sivec?

Club breed standards describe Sivec for the Criollo in Tennessee Walking Horse.

Konj pattern

Sivec

Progressive whitening with age: a horse born colored turns gray and finally white, often dappled or flea-bitten on the way.

32 Konj breeds list Sivec. It is in a club standard for 2 breeds.

Breed	ACCC	ABCCC	TWHBEA
Criollo	Po standardu (“se aceptan todos los pelajes”)	Po standardu (“Tordilha”)	No ruling
Tennessee Walking Horse	No ruling	No ruling	Po standardu (“Grey”)

Breed
Ahaltekinec
Ameriški quarter konj
Andaluzijec (PRE)
Angleški polnokrvni konj
Anglo-arabec
Arabec
Belgijski hladnokrvni konj
Belgijski toplokrvni konj
Berberski konj
Clydesdale
Donski konj
Frederiksborg
Hanoveranec
Holsteinec
Irski športni konj
Lipicanec
Lusitano
Marwari
Morgan
Mustang
Nizozemski toplokrvni konj (KWPN)
Oldenburžan
Percheron
Selle Français
Shire
Standardbred
Švedski toplokrvni konj
Trakenec
Velški poni
Vestfalec

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