Home | Up | Agouti/Bay | Grey | Pangare | White Spotting Patterns | Rabicano | Roan | Sooty | Miscellaneous Color Issues

Home
Up
Adopt A Mustang Wild Horse
Burros!
Mustang Mules
Wild Horse & Burro Herd Areas
Mustang Wild Horse History
Mustang - Link to History
How to Gentle A Wild Horse
What's Next After Gentling?
Our "Wild" Horse Herd
Mustang * Horse Colors
Videos from Video Mike
Mustang Links
The Future?
Mustang & Burro Events

Lewis & Clark

Mustang History, part 2

ROAN The roan gene ("Rn") mixes white hairs evenly throughout the base coat or the main body. True roans usually have normally (non-roaned) colored faces and lower legs . See for similar patterns Aidan, from Devils Garden HMA - a strawberry (red-based) roan "Sage" a bay roan adopted by Pat Hyatt of Napa Blue Velvet, a blue roan mare from Devils Garden adopted by Karen Floyd Roan is not progressive -- it doesn't get lighter over the years, as grey does. Roan does, however, change seasonally - being very light, even white, at certain times and dark at others.  Wilbur Mustang, in May *left) and January (right)   Suzi Kicker's Misty Bleu, showing seasonal changes in roan coloring Bolero from the Hog Creek HMA in Oregon, adopted by Greg Schultz Showing his summer sleekness; At this stage, blue roan appears pewter, and from a distance can be mistaken for grullo A bay roan mustang in late winter woolies; At this stage, roans appear to be almost white A blue/brown roan in mid-spring, showing lots of white The Roan coloring may not be apparent in the foal coat, but appears with the first shedding. The roan pattern is stable throughout life. True roan is caused by the "Rn" gene, which is dominant. A horse must be a roan in order to have roan offspring. Roan does not "crop out" - at least one parent must be roan. The Rn gene has long been believed to be lethal in the homozygous state, with all RnRn embryos being resorbed very early in the pregnancy (usually before the owner knew the mare had conceived). However, recent research at the Veterinary Genetics Laboratory of the University of California, Davis, has proven this long-held theory to be incorrect. Roan itself is not lethal. Several stallions have been identified that are homozygous for roan and have tested as such. It is not a test that is commercially available to the public, but it is possible to test for it based on a nearby gene (we don't know the gene for roan). Roan was only thought to be lethal because a paper was published in 1979 by Harold Hintz at Cornell that showed, statistically, that roan should be an embryonic lethal because of the ratios of roan-to-non-roan foals born to two roan parents. This turned out not to have a genetic basis, according to the Veterinary Genetics Laboratory of the University of California, Davis. Roans and horses undergoing a greying process can be confused.  Roan horses may have some coat variations through the seasons, but Grays continue to produce more and more white hairs as they grow older. Grays also develop white hairs over their faces and lower legs. Young Horses Turning Gray may resemble Roans This filly appears to be red roan, but if you look closely, you can see the early stages of greying...note light circles around eyes The white hairs on the face are a giveaway that this "roan" yearling is actually in the early stages of graying See GRAY for more about the Gray gene and the Graying process Like the yearling at left, this 2-year-old (our Ruby) may appear to many to be a roan, but the roaning/graying on her face gives away that she is undergoing a graying process rather than being a roan. Another pattern that looks similar to ROAN is VARNISH ROAN APPALOOSA. This pattern is caused by the Lp gene, and is unrelated to Roan. Blue Roan mare with foal  A Roan horse displays the full base color, with roaning added to the body coat. The "points" (mane, tail, and lower legs) and face have little or no roaning. The Roan pattern may not be apparent in the foal coat, but is stable through life thereafter. Roan changes seasonally (more white in the winter coat) but is otherwise stable throughout life.   Varnish Appaloosa Varnish Roan usually has a whitish or grey body, with color mainly on the cheeks of the face, and around the knees.   The Varnish Appaloosa pattern is not stable. Much like the Grey gene, the horse is born another color (usually another appaloosa pattern), and the Varnish pattern gradually overtakes it. SABINO ROAN is also similar to both roan and gray, in that roaning can cover the entire body, including the face: This guy could easily be confused with a young gray. But there is something a little different. And over time, he swill stay the same, whereas a gray will continue to lighten over the years, until it is white.

TERMINOLOGY: RED OR BAY ROAN? RED OR STRAWBERRY ROAN?
Genetically, the roan gene can act on any of the base colors. Roan on black is called Blue Roan; But from there it gets confusing - conventional terminology and various breed registries define the colors differently. Some say that if the horse has ANY red on it (like a black with gold muzzle from the pangare effect) it is a red roan. Some say that a red roan is Roan on a Red Base. Others call this same effect a Strawberry Roan.

Since color terminology is not standardized, you can choose whichever terms you want. It is important to understand, however, that others may be using the terms differently.

It helps to understand the genetics involved.

I have used to terms Bay Roan, and Strawberry Roan, avoiding the use of the term "Red" in this case.

CORN:

The Roan coat develops "corning" over time - wherever  the skin is scratched, the hair grows in as the base color, rather than with roaning, giving a splotched effect known as "corn" - so-called because its appearance is reminiscent of an ear of Indian corn.

Strawberry Roan is the result of the dominant Roan ("Rn") gene modifying Red (sorrel or chestnut).

Like all red-based horses, the points may be any shade of red, white, gold, silver, grey, or brown, even very dark brown - just not pure black.

Strawberry Roan Sabino mustang at Palomino valley BLM Center	Cinnamon, a Strawberry Roan Quarter Horse owned by Kevin Allen
Strawberry roan mustang	Strawberry roan filly at Blue Wings HMA capture
The above two photos show the same horse during different seasons. At left is his "winter look" and at right is his late summer "whiteness."
Strawberry roans at Palomino Valley BLM Center
BAY ROAN OR STRAWBERRY ROAN? "Tucker" A Shire horse (From Bay Area Equestrian Network Classified Ads Feb. 2002) was listed in the classifieds as a Strawberry Roan. So long as the points are not pure black, the horse is a Strawberry (red-based) Roan, not a Bay Roan. This one seems to be "riding the fence" - the mane has a pewter grey appearance, but the lower legs are quite black.

BAY ROAN (sometimes also called "Red Roan") results when a BAY base coat is modified by the ROAN gene.

Bay Roan from Blue Wing HMA, September, 2003

Bay roans have the black points and red/brown faces of "regular" roans, but additionally their bodies are colored by a mix of red and white hairs (and maybe black hairs, too, if other factors are present).

Many people call these "Red Roans" - I have used the term "Bay" because it is accurate genetically, and avoids confusion with Strawberry Roan, which can also be called "Red Roan."

Like all true roans, Bay Roans change coloring seasonally - being whiter in spring and early fall, and less obviously roaned in summer and winter. Except for this seasonal change, and except for the foal coat (which often "hides" the roaning - Roan often does not become apparent until the first foal coat has been shed) red roan is a stable color. An adult or elderly roan horse will be no more roaned than it was as a two-year-old.

"Sage" and Pat Hyatt of CA	Bay roan in her springtime "white" phase
This baby from Blue Wing HMA is already obviously a roan. Other foals do not show their roan coloring until they have shed their foal coats	"Brown" Roan: This mustang is a roan on a seal brown (black with tan) base

BLUE ROAN is the ROAN gene on a BLACK base
Blue Roan mustang - Liz Cohen photo	Blue Roan mustang

BLUE ROAN	vs.                 GREY
Blue Roan Brabant Belgians at the Grass Valley Draft Horse Classic	Ruby. a gray mustang from Twin Peaks HMA Note the black face on the roan (at left) and the light face on the gray (above)
BLUE ROAN	vs. Varnish Roan Appaloosa

Roans, and especially Blue Roans, are easily confused with Greys and Varnish Roan Appaloosas, but there are definite differences.

ROAN vs. GREY:

• A Roan's face shows less roaning (fewer grey hairs mixed in) than their bodies. Horses undergoing GREYING often show grey first on the backs of their ears and the area around the eyes. Their entire faces grey along with the rest of their bodies.
• Roan is a stable coloration throughout life, whereas Grey and Varnish Appaloosa are progressive. The original birth color is gradually (or rapidly!) overtaken by grey, until the entire horse is grey (may retain black points) and will eventually fade to white. The Varnish pattern develops similarly - gradually smudging and blending another appaloosa pattern into an overall grey roan appearance, much like varnish being brushed over wet paint.

• Blue Corn is a term used to describe a blue roan in which speckles and spots of the base color (black) appear, making a mottled appearance reminiscent of an ear of colored corn. "Corn" markings are the result of scratches and cuts and scrapes. When the skin heals, the base color of hair grows back, but not the roaning.

I have shown, above, the effect of Roan on the 3 "basic" colors, but any color of horse can also have Roan: Palominos, buckskins, pintos, duns, chocolate - a horse can carry any combination of color genes, including roan.

RABICANO / RUBICANO vs. TRUE ROAN
Rabicano/Rubicano is often confused with true Roan. Rabicano is a genetic modifier that creates roaning that is usually limited to the underside, flanks, legs, and tail head areas. Rubicanos often have a 'coon tail' of white barring at the tail head and white hairs in the flanks. Rabicanos often look so similar to roans that they may simply be called "roan" although genetically, roan and rabicano are distinct and different from one another.

Or Choose another color: Home | Agouti/Bay | Grey | Pangare | White Spotting Patterns | Rabicano | Roan | Sooty | Miscellaneous Color Issues

copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006 Nancy Kerson, all rights reserved - I'm happy to share, just need to be asked and credit given where due.

Disclaimer: Horses are inherently dangerous. Use the information contained within this website at your own risk.

LINKS TO FRIENDS AND RESOURCES:

Bay Area Equestrian Network Oregon Equestrian Network Southern California Equestrian Network Southeast Equestrian Network Arizona Equestrian Network Nevada Equestrian Network

CALIFORNIA BLM ADOPTERS ASSISTANCE

 
IWHBA                                    BCHA                                     CADAMA