What is a roan horse, compared to other patterns?

White hairs are evenly distributed throughout the coat of the main body, with non roaned heads and points.A silvery effect can be given to a horse's coat.roaning is a pattern rather than a color, but the contrast is more striking on dark colors.Roaning can be masked by gray and can occur with any of the pinto or appaloosa patterns.After the first foal coat is shed, the roan pattern is stable throughout life.gray horses do not get lighter over the years, but some get darker with age.The lower legs, head, mane and tail are always colored.It is more difficult to tell if a horse is light or dark in the summer.When roan horses are injured, the hair over the scars grows back colored, unlike the white hair seen with most other horses.It was thought that roan was lethal due to the fact that some of the embryos died early in the pregnancy.No adult horses would be true-breeding for roan if this was true.The idea of a Lethal Roan Syndrome was popularized by a study in 1979.According to research done by Dr. Ann T. Bowling at the University of California, roan is not lethal when there is a homosexual relationship.Her research supports the findings of previous reports about the existence of roan stallions in France and Japan.There was a large study of roan horses in the American Quarter Horse Association.Several stallions were identified as having roan in their genes.The data was supported by an analysis of genes linked to roan.The position of the roan gene in the genome is based on its genetic linkage to nearby genes.There is a chance that the stallions are also related to the roan allele.The conclusion of their research was that there was no evidence that roan was lethal.I would be grateful to anyone who could update me if this is incorrect, although I know this research wasn't published.One person claims there are serious flaws in the research.She said that not all of the horses in the study were true classic roans.One of the AQHA stallions that was supposed to show 100% roan production did not, according to her.I am unable to confirm or deny this information.I would be happy to hear from anyone who knows more about this story.The roan gene has been idenified.

White hairs are evenly distributed throughout the coat of the main body of a roan horse.A silvery effect can be given to a horse's coat.roaning is a pattern rather than a color, but the contrast is more striking on dark colors.Roaning can be masked by gray and can occur with any of the pinto or appaloosa patterns.After the first foal coat is shed, the roan pattern is stable throughout life.

gray horses do not get lighter over the years, but some get darker with age.The lower legs, head, mane and tail are always colored.It is more difficult to tell if a horse is light or dark in the summer.When roan horses are injured, their hair grows back colored, unlike the white hair on most other horses.

The allele that causes classic roan is dominant.It was thought that roan was lethal due to the fact that some of the embryos died early in the pregnancy.No adult horses would be true-breeding for roan if this was true.The idea of a Lethal Roan Syndrome was popularized by a study in 1979.

According to research done by Dr. Ann T. Bowling at the University of California, roan is not lethal when there is a homosexual relationship.Her research supports the findings of previous reports about the existence of roan stallions in France and Japan.

There was a large study of roan horses in the American Quarter Horse Association.Several stallions were identified as having roan in their genes.The data was supported by an analysis of genes linked to roan.

The position of the roan gene in the genome is based on its genetic linkage to nearby genes.There is a chance that the stallions are also related to the roan allele.The conclusion of their research was that there was no evidence that roan was lethal.

I would be grateful to anyone who could update me if this is incorrect, although I know this research wasn't published.One person claims there are serious flaws in the research.She said that not all of the horses in the study were true classic roans.One of the AQHA stallions that was supposed to show 100% roan production did not, according to her.I am unable to confirm or deny this information.I would be happy to hear from anyone who knows more about this story.The roan gene has been idenified.

The KIT genes have been mapped to the chromosome 3.KIT is involved in many aspects of metabolism.There are more than one dominant KIT mutations in different horse populations.

As with dominant white, there may be more than one roan allele.

The term roan means white and colored hairs in animals.There are various horse patterns that could be called roan, in addition to the very specific pattern for which the name is usually reserved.The "true" or "classic" roan is genetically different from other types of roaning.

The roan areas tend to be over the hip, shoulder and spine in the one roaning pattern called frosty.roaning can also occur on the head and mane and tail.

It is sometimes referred to as tickling.The most common type of tick in Arabs and Thoroughbreds is called coon tail.Rn.The roan horses are not real, but it is possible that they are controlled by a variant of the genes.Coon-tail tick is associated with horizontal white bands at the top of the tail and may or may not be present on the body.

The silver tail may be related to the coon tail.I have heard of a silver-tail bay being produced from a chestnut mare with a coon tail.It would be interesting to know if silver-tails ever show any other evidence.There is an example on the web of a bay Arab/Warmblood mare with a silver-tail and some tick around the flanks and belly.

There are horses that are confused with roan.They have a pattern of white patches.Most sabinos have roaning, especially those with extensive white.As a horse matures, the roaning may not be present at birth.In Spanish, the term sabino means "pale red" or "roan".Both roan and sabino are caused by different genes.As roaning only, minimal sabino may occur.The roan areas on sabinos are less evenly distributed than they are on classic roans, with roaning sometimes occurring on the head and legs, which may also have white.

There are many different terms used for roan horses.It would be better to standardise the descriptions so that everyone knows what they are talking about.Adding roan to the coat color would be the easiest way to do it.Blue and red roan are two terms that have been used for a long time.

Red roan horses are chestnut.In the UK red roan is used for strawberries.Bay roan horses can be easily identified by their black mane, tail and lower legs, which is why the term red roans is sometimes used to describe them.I've heard that some people define red roan horses as anything but black and gold, like a black with a gold muzzle from the pangare effect.It is unfortunate that the breed societies and registration authorities couldn't agree on terminology.

There is a roaning pattern on a black base coat.The white hairs mingling with the black creates an attractive gray or blue sheen to the body.The head, mane, tail and lower legs of a Black Roan will be black.

H.F. and VanVleck, L.D.1979.There was a lethal dominance in horses.Journal of Heredity 70: pp.