The WA Tobiano Horse Association Inc has been developed to encourage breeders to keep the Tobiano pattern pure whether it be in its Homozygous or heterozygous state.
We aim to promote the Tobiano in all aspects of horsemanship and to establish a studbook of the Tobiano in WA.
The WA Tobiano Horse Association Inc promotes good sportsmanship and encourages the participation of families in all equestrian activities.
The name Tobiano (pronounced Toe-bee-arn-oh) was thought to have originated in South America, when General Tobias and his soldiers arrived in Argentina in the mid-1800s, riding horses with this distinct type of marking. This was supposedly the first time horses with these markings had been seen.
Tobiano horses have a pattern of white hair with underlying pink skin. The Tobiano pattern can occur with any coat color. The pattern develops while the foal is still in the womb and remains throughout its life.
Tobiano horses may be either predominantly solid coloured or predominantly white. They are the only colour pattern which can have white legs and a solid coloured head. The Tobiano gene does not produce extreme facial white, such as apron or bald faces.
The white on the body will extend over the topline somewhere between the ears and tail except in the cases of minimal and incomplete Tobianos. The patches are usually regular and distinct in outline, with rounded or square edges. Dark color usually covers the flanks. The color on the flanks and chest are called "shields" and are characteristic of Tobiano horses.
Tobiano is the only coloured Pinto pattern which produces a two toned tail and the only Pinto pattern which can produce a viable homozygous foal.
On some Tobiano horses there may be small coloured spots, commonly called ink spots or paw prints, in the white patches. These are usually round speckled/mottled in appearance and may occur in groups. This marking often occurs in horses homozygous for the Tobiano gene, but isn’t a guarantee that the horse is homozygous.
There may also be ermine spots, spots of color in the white close to the hoof (coronet), or distal leg spots, colour above the ankle. There may be colour around the chestnuts. White legs with ermine spots are the result of the Tobiano gene being present, if there are no ermine spots then the horse would have had a white leg if it was a solid colour aswell.
Some Tobiano horses have white bodies and a coloured head, the head being the last part of the body to remain coloured even down to the ears just having colour. These horses are generally called Medicine Hat Tobiano.
Incomplete Tobianos do occur, they have 4 white legs and no white on the face and are usually thought to be solid horses. They can produce Tobiano offspring as reliably as any other horse with the Tobiano gene.
Blue eyes are not a result of the Tobiano gene, in fact, at this stage their appears to be no rhyme or reason as to why some horses with solid coloured faces have blue eyes.
Homozygous Tobianos occur from the mating of 2 tobiano parents. The only way to truly identify a homozygous Tobiano is through a gentic test. Not all horses born to 2 Tobiano parents are homozygous. Homozygous to homozygous always produces homozygous.
Heterozygous Tobianos occur from the mating of 2 Tobiano parents or 1 Tobiano parent and 1 solid parent. 2 hetrozygous Tobiano parents can still produce a non Tobiano foal. Heterozygous to solid always produces heterozygous if the resulting foal is Tobiano. Heterozygous to Heterozygous can produce Homozygous, Heterozygous or solid offspring.