Color Question--Roan Leg?

[LaurieB]

I know this is a dumb question but I figure you guys have pretty much seen everything.

I have a TB mare whose first foal was a carbon copy of herself–dark brown (basically black with a brown nose) and a small white dot on her forehead. Her second was a bit of a surprise. By a sire who usually produces very plain bays, I got a chestnut filly with a blaze, three stockings, and one roan leg up to the knee. This is a picture of her from last year at 4 months old: http://i66.photobucket.com/albums/h245/LaurienB/HotShot-6-28-08.jpg

So I thought that was kind of odd but just figured it was Mother Nature having a little bit of a laugh. Then this year’s filly was born (different sire from the previous two.) This one is again dark brown like her dam, with a small star. Now that she is shedding out, I can see that she has the same roan leg–right front–not as pronounced as the chestnut filly, but definitely there. This picture isn’t great, but you can kind of see it:

Has anyone else had a marking like this? It seems somewhat unusual to me, especially in TBs that are bred for racing, not color. Does anyone know what causes this, and should I expect to get another roan leg next year? :lol:

Thanks for any and all opinions.

[Tasker]

We have a gelding who is chestnut with tons of Ben D’Or spots and his LF has a liver chestnut forearm that has a large roan patch. Every year the liver area gets darker and the roan patch spreads… :eek: He’s got some other spots and they get more intense and larger every year too.

His granddam was a TB from OK with an “interesting” pedigree - http://www.paardenfokken.nl/pedigree.php?horseid=302973&maxniveau=6

She was registered as a light bay but had dark brown points, a dorsal stripe and grualla (sp?) stripes on her forearms and gaskins.

Her sons and daughters were pretty conservative but her grand and great grand children are a whole 'nother story. Tons of sabino and lots of loud markings…

There is a picture (not great quality admittedly) but it is from '82 or '83… http://watermark-farm.net/mares.html

[AdAblurr02]

Sabino gene in the TB

There is a heckuva lot of sabino in the Thoroughbred - actually, in the foundation Arabs and barbs, from whence it likely came.

Our senior broodmare has a lot of roaning, the crazy sabino markings, and she’s passed it on to all of her foals to some degree or another - though her first, a rather plain chestnut filly, just a bit of roaning in her coat, was by the color-producing sire Airdrie Apache - got the plain coat from the “color” horse, go figure!

[RedMare01]

It happens in other breeds, and there is a name for it (and a thread on it awhile ago), but it is rare.

My ASB mare has a spotty/roany looking “sock” on one of her hinds just like yours. I have no idea if it is genetic as she has never been bred and never will be bred, but I think it’s kind of neat. In all my time around horses, I’ve only seen one other horse in person with the marking, and that was a QH gelding. There were a few others posted on the thread here.

You can see pics of my mare’s leg in my Webshots album. This pic shows it well.

Caitlin

[flyinghorse]

Our  has a roan leg. We though she was going to be a grey, since Nicholas was a grey, but she is a nice liver chestnut color…here is a picture…don’t know if you can see the roan leg or not.

[IMG]http://i300.photobucket.com/albums/nn22/Flyinghorse11/Copy2offas3.jpg)

It is her right hind leg. It is roaned all the way up to her hock. The picture is of her in her Under Saddle Portion of the MPT for Select Mare, BWP…she scored 77 Points, and earned her BWP C-Label this past Sunday. We really thought she was going to be a grey mare! Obviously, at four, she is still dark chestnut

[LaurieB]

Thanks for the input!

RedMare, your mare’s leg looks a lot like my chestnut filly’s. It’s like they started to make a stocking and then gave up halfway through the attempt. :lol:

I know all about the sabino stuff. These fillies’ broodmare sire is Summer Squall who produced some very flashy horses so no mystery there. As for the rabicano gene, I thought that the roaning you see with that was supposed to be on the body.

This just struck me as odd, especially since it’s on the same leg. Both these two TB sires have a lot of offspring running around, and I’ve never seen any others with roan legs like mine.

[peskee]

We have a Sir Sinclair/Rampal/Northern Baby 2 YO gelding with no white except a roan hind leg and one white heel bulb. And his Lupicor brother also had a small roan area on one leg. Sir and their dam Valerie have no white.

[ahf]

I have a Hanoverian yearling filly that has a roan left hindleg. Had to get her papers changed to reflect it. THe only other white she has is about 8 hairs in the center of her forehead. Her full brother has one white coronet, and that’s it. Same leg though.

THe mare is a solid chestnut, the sire a solid dark bay and a bling killer.

I thought I was going nutz, till I talked to someone who works the Keeneland sales every year - who said they usually end up with one or two of them annually.

Too late to take a picture tonight - but I will when I get home on Sunday.

[ShannonD]

I have a dark brown Dutch mare with a very pronounced roan front leg though it doesn’t go up as far as your filly’s. It does have light roaning all the way up to her shoulder but is definitely more heavily roan towards her hoof. Her other front has some roaning too but not as much.

She has no white except for a small hind sock that is much higher on the inside with lots of ermines. She also has lots of roaning throughout her body. I really suspect she is sabino with some serious white suppression going on (she is also homozygous black).

As dark brown as they come!
http://i23.photobucket.com/albums/b387/queenpage/Mariah/DSC_2762.jpg

Sock with ermines
http://i23.photobucket.com/albums/b387/queenpage/Feet/DSC_1900.jpg
http://i23.photobucket.com/albums/b387/queenpage/Feet/DSC_1909.jpg

Roaning on LF
http://i23.photobucket.com/albums/b387/queenpage/Feet/DSC_1902.jpg
http://i23.photobucket.com/albums/b387/queenpage/Feet/DSC_1900-1.jpg

Roaning on shoulder
http://i23.photobucket.com/albums/b387/queenpage/Mariah/DSC_1936.jpg

Please excuse her feet. They are a work in progress.

[JB]

Sabino is generally thought to be the culprit in those roaned legs

[2Horse]

I raised an ASB/Friesian who has a roan leg.http://pets.webshots.com/photo/2299451920060910712vmftgM
http://pets.webshots.com/photo/2037574350060910712iSApet
No Sabino in his dam as far as I know.
http://good-times.webshots.com/photo/2524780540060910712nOLDoL

[GracefulHano]

My Tb mare has a roan leg. We call it her pretend sock. It’s roan, not white. Her 2008 colt by Guaranteed Gold has the same thing.

[sniplover]

Forum member “Cant Re-” has a mare by Lotus T o/o Chimere by Challenger has a roany leg patch too - hers is a bit more dense and actually looks like someone spilled paint on her leg;

http://www.flickr.com/photos/24994333@N03/3404269243/

[crosscreeksh]

We have a loud bay and white sabino/overo filly by Puchi’s Rambo. She has the blaze, body roaning and white spots, but she has three high white stockings and one black/white roaning leg, RF, with a wild white splotch (pink skin) that starts in the shin area above the ankle, widens over the knee and comes to a point mid forearm. Her pastern is black/roan and over the years I’ve often thought it was dried blood or mud!! Makes you do a double take!!! She also has the rabicano tail markings. You can see her on our web site - “R Last Dance”.

[twofatponies]

I’ve seen two draft crosses (with either Shire or Clydesdale blood) that had four white stockings…except one stocking had a black sock inside the white stocking! Its like one gene said “give him four white Clydesdale stockings” and another gene said “give him a right hind sock” and they cancelled each other out and showed the base color. Weirdest thing, and to see it twice was unexpected.

[Paula]

I just took pictures of a three year old Holsteiner mare by Con Caletto who has the socks with ermine marks - very cool looking. http://www.pbase.com/finnskeeper/three_year_old_filly_one
She’s a big mover and the flashy markings really set her off
Another three year old I saw that day also by Con Caletto also got the sox but his are a bit plainer http://www.pbase.com/finnskeeper/three_year_old_colt

[LaurieB]

Thanks for all the replies! I guess this “roan leg” thing is more common than I thought.

[csaper58]

Bump for @Sporthorse Shop