Bay horse turning grey?

Apropos of nothing:
One place I boarded a guy had what I thought was a gray - very grayed out, near white - gelding in his late 20s (horse - not owner).
He showed me a pic of both of them, much younger, & horse was a solid dark bay!

Lipizzans, are born dark—usually bay or black—and become lighter each year as the graying process takes place, with the process being complete at between 6 and 10 years of age

The JC is stuck in the Medieval times when it comes to colors. “Gray/roan” is an old term used to describe what’s seen in the young foals/horses. As said, for all intents and purposes there is no Roan in the TB. It DOES exist, but in so few lines and horses it really isn’t in play. Catch A Bird is the example. All those “gray/roan” TBs are gray.

What’s seen in the OP is either from Sabino or possibly Rabicano. It’s very common, and with Sabino, more likely to be see this time of year with the coat shed. Rabicano would have more white in the flank area, maybe into the barrel, where Sabino could be other places as well.

Nearly all true Roans do have a dark head, but it’s not a requirement. There are several out there with Roan heads, through still a bit darker than the body.

Color testing won’t help here. TBs don’t have the only Sabino that’s testable (SB1) and there’s no test for Rabicano. And, he’s not Roan, so that would be a waste of $$.

People tend to attribute dark hairs on chestnut or palomino horses to good nutrition or feeding alfalfa, don’t know if that’s true, but there is a link between nutrition and coat condition and pigment.

It’s known there is a sooty factor in play with the red-based colors (chestnut, pali) which can make far darker areas, especially withers and forearms, but sometimes also the entire topline giving a ombre effect. Sooty can be in the mane as well. There IS a link between nutrition and pigment, and that’s copper and zinc. Other nutrients too, but copper is needed to produce melanin, so the darker the coat genetics, the more melanin/copper is needed for health pigment (ie help prevent some or a lot of fading)

Her chestnut parents also had two grey colts

Not possible, as gray is dominant - no gray horse, no gray gene; no gray gene, no gray horse.

ASBs do carry Roan, though it’s rare. And not all Roans are very loud, so it’s not always very easy to see. But it could become much more visible in a given offspring. They also have Sabino, and that can present as a very “gray” looking horse.

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I have a chestnut TB mare that does this. She’s a sabino, with both a big Bend Or spot on her left hind (which drives me nuts because it always looks like I didn’t bathe my horse at shows!), and Birdcatcher spots that come and go with the seasons/shedding. The occasional “roany” white bits tend to come and go seasonally as well. Some years she has nothing, and some years quite a bit. This year she’s got a good bit of it going on her left side sort of under where the saddle flap and my leg goes. I think this should let you see it via Instagram: https://www.instagram.com/p/BToxMtSD
-by=jemartin03

Not at all unusual with TBs. I would assume the greying/roany bit is there for the season, or might stay a while and disappear again. I know so many TBs with a spot like that, doesn’t seem odd at all to me, and would definitely not think that the whole horse was going to grey out. If you look at enough TBs, you’ll notice a good percentage of them have something like this going on–Bend Or spots, roany patches, Birdcatcher spots, etc.

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How strange that some seasons there is no grey! I wouldn’t have guessed it would come and go like that. My last TB was grey and my pony before that was a paint so I wasn’t sure if this was common in bays. This is the first year the grey hairs have stayed. I’m not a huge fan of lots of grey so hopefully it stays minimal but if not at least we’ll stand out in the hunter ring!

This is actually true for all grey horses. It’s usually impossible to tell their original color coat by the time they are 8 or 10, whether it’s bay, black, chestnut or pinto.

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I have a chestnut TB with all sorts of weird patches that persist through seasonal shedding–he has a dinner plate sized roany patch plus smaller ones, multiple bend or spot and even a couple palomino looking areas. He’s a horse of a different color for sure :lol:

They are all now registered as “grey/roan.” Here are the coat colors as as described by the Jockey Club. When they used to register “roan,” those horses were just red horses going grey. “Grey” horses were bay or black horses going grey. “Roan” meant something different to the Jockey Club then than it does to us now.

@Scribbler I do also have a grey TB mare who’s seven this year and she’s JUST starting to really look like a grey horse–even last year, people still mistook her for black or dark bay with some frequency. She’s just greying veeeeeery slowly! I wonder if I have any recent pics of her
she is all dark and dapply this year. This is from the winter and not a great shot, but you can definitely see how she’s still a long way from being all grey.

Except if they become flea bitten, the spots are the color of the original coat. Always wondered whether my gray was bay or chestnut, since he had both red and black hairs in his tail.

[QUOTE=Simkie;n9784350
They are all now registered as “grey/roan.” Here are the coat colors as as described by the Jockey Club. When they used to register “roan,” those horses were just red horses going grey. “Grey” horses were bay or black horses going grey. “Roan” meant something different to the Jockey Club then than it does to us now. [/QUOTE] And if this is true, my boy was chestnut. I had thought JC registered all grays as roans.

There was a well known local stakes class horse racing at Hastings Park decades ago called “Happy Trap”. He was registered as dark bay, clearly stated on the racing program. But as a 3 or 4 yr old, the grey started to become apparent. Registration had to be changed (I presume). Of course, he had a grey parent. He was slow to grey out. He stood at stud for years afterwards, and did not ever really turn white, stayed grey longer and darker than any other horse I’ve ever seen.

The Comico line of PREs has what’s being described as a mutation of gray, which causes an extreme delay in the graying process. As in, into their old age, they are still only as “gray” as most 2-3yos who are just starting to present with gray.

I love the colour of an early stage grey, so that would be wonderful if a horse stuck at dark dapples!

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I agree!

My JC TB mare is registered as roan. She’s grey, born dark, lighter each year, went from dapples at 9 when I bought her to almost white at 17. Sire, grand sire, great grandsire (Mahmoud) and on back from him greys
but no idea what they are registered as, roan or grey. Think some old timer once told me some breeders shy away from using grey, preferring roan? Didn’t really understand what he was talking about
maybe there’s something there.

Had a horse colored like OPs, it was a black based varnish Appy, Looked different with each coat shed. I thought it was pretty, still do.

On the why more roan Ponies then horses at HJ shows? Roan runs in the Western breeds and some Pony lines. It does not run in WB or any other 16h+ with 14’ stride breed/type with the jumping style preferred by Hunter judges or scope for the 1.4m big sticks. There may be a few random individuals but it’s rare
might hint something other then what’s claimed as a relative got loose one night too. Happens.

Mahmoud was registered grey. The JC keeps track of this stuff–just pull up your mare’s pedigree on Equineline to trace the color back. Here’s Runaway Groom, who has Mahmoud on the page.

What’s interesting there is Boodle, who was registered “dark grey.” Didn’t know that was EVER an option!

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