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A brindle I've never seen before...

Heidi Fri, 01/29/2010 - 17:03

Ew, ick! I loves the brindle coloring, but that barrel looks thinner in width than the HIP, SHOULDER and *NECK*. :shock: [i]...what makes it 'ew-ick' to me, is that looks to be a photograph and not a mistaken drawing.[/i] :?

rabbitsfizz Sat, 01/30/2010 - 09:20

I would say this horse is a couple hundred pounds underweight for a start....but, then, we don't know how old he is!!
Nothing like a skinny horse to show up all the faults, is there?
Which, of course, is why all show animals (with the strange and inexplicable exception of Minis, which, by fashion, are shown half starved) are grossly overweight! :rofl

Of course, silly me, Minis are not judged on conformation they are judged on how pretty they look.

What me, bitter?? :booty

miniwhinny Sun, 01/31/2010 - 10:02

[quote="accphotography"]An old Noriker:
[img]http://www.stablemade.com/horsecare/ima…]

Okay - his face is dark...does that mean he's a roan? I'm convinced that roan in combination with brindle allows the pattern to show. My "theory" is that the gene that causes the roaning is blocked from having any effect on the brindle stripes by the brindle gene. Ozy's brindle pattern is the same but because it's bay on bay it's way harder to see but the other brindle minis that he's related to are both roans and their brindle pattern is very visible. :?: :?:

Krickette Sun, 01/31/2010 - 11:25

[quote="rabbitsfizz"]I would say this horse is a couple hundred pounds underweight for a start....but, then, we don't know how old he is!!
Nothing like a skinny horse to show up all the faults, is there?
Which, of course, is why all show animals (with the strange and inexplicable exception of Minis, which, by fashion, are shown half starved) are grossly overweight! :rofl

[b]Of course, silly me, Minis are not judged on conformation they are judged on how pretty they look.[/b]

What me, bitter?? :booty[/quote]

HAHA! Love it! I actually won an AOB class with Splash one time despite her being morbidly obese, because she was "precious". There were some nice horses there, too, I felt kind of bad!

accphotography Sun, 01/31/2010 - 13:41

[quote="miniwhinny"]Okay - his face is dark...does that mean he's a roan? I'm convinced that roan in combination with brindle allows the pattern to show. My "theory" is that the gene that causes the roaning is blocked from having any effect on the brindle stripes by the brindle gene. Ozy's brindle pattern is the same but because it's bay on bay it's way harder to see but the other brindle minis that he's related to are both roans and their brindle pattern is very visible. :?: :?:[/quote]

I don't think so. I've never seen brindling on a face even on the heaviest brindles. This guy has identical markings but has no roan parents or offspring:

[img]http://www.brindlehorses.com/brindlehos…]

accphotography Mon, 02/01/2010 - 17:08

[quote="rabbitsfizz"]Didn't Catch a Bird have Roan offspring, or did they just look Roan??
How's the test for Roan coming BTW, anyone know????[/quote]

No they're real roans and producing like it too. But neither of his parents were roan so I guess he's a singular mutation. However... his stripes didn't go away in the winter like you'd think roan stripes would.

miniwhinny Tue, 02/02/2010 - 08:20

I guess the only way to really test the theory is real life. I'd like to find some roan mares (with KLKS in their lines if possible) to breed to Ozy. If he passes his brindle to them it would be interesting to see how it's manifested.

I'm by no means a brindle expert...to be honest there's not that much info out there...but I have noticed that a lot of the more "contrasty" brindles have roan and I think all of the seasonals I've seen pics of don't. I'm not convinced there is such a thing as a seasonal...I think it's just how close the stripe color is to the base color.

edited to add...tests have been done on that filly...so far she's only showing one set of DNA but it doesn't rule her out being chimera (perhaps only breeding will show) which may account for her face markings.

RiddleMeThis Tue, 02/02/2010 - 10:19

[quote="miniwhinny"]
edited to add...tests have been done on that filly...so far she's only showing one set of DNA but it doesn't rule her out being chimera (perhaps only breeding will show) which may account for her face markings.[/quote]
Ok maybe horsegen could help me out with this question BUT...

I have always been under the impression that horses that appear brindle because of chimerism are that way because its TWO sets of DNA present in the coat color, one from each embro.

Meaning that one part of the brindle should test as one set of DNA and the other color should test the other color.

If that is not how it works, and they could show the pattern and have all the same DNA on the outside, why does that brindling occur?

miniwhinny Thu, 02/04/2010 - 11:23

[quote="RiddleMeThis"]
If that is not how it works, and they could show the pattern and have all the same DNA on the outside, why does that brindling occur?[/quote]

That's a good question. It's very interesting how the brindle markings resulting from a horse being chimeric is the identical pattern - completely indistinguishable without cellular level analysis - from the pattern horses get from being genetically brindle :?:

Does anyone know of a proven chimeric horse that is not brindle?

lillith Thu, 02/04/2010 - 11:55

Aren't there a couple of red/black tobiano looking (red/black instead of red/white or black/white) chimeras, I remeber a picture of an icelandic but I don't know if she was ever tested and theres that horse someone claimed was their stallion but it wasn't, some pasture pics as I remember. I think I may have heared of a couple of others either suspected or proved chimeric that had odd markings or patches.

rabbitsfizz Thu, 02/04/2010 - 13:56

Yes, and the one posted recently.
There is the problem of the hair being collected correctly.
If it is not then obviously this fudges the results, and taking hair form a wriggly foal is not the easiest of things to do......

accphotography Thu, 02/04/2010 - 15:49

Yes there are pinto faking chimerics. I strongly suspect it may have to do with the TIME that the embryos fuse. I think the early fusers are the brindles and the late fusers are the big patches. JMHO.

lillith Fri, 02/05/2010 - 01:57

Sounds logical acc, any research on it? not that I have a problem with logical theories I'm just interested. Talking of theories a little off topic but is sooty eaumelenin? I'd imagine so but I have never asked.

accphotography Fri, 02/05/2010 - 02:10

No studies to my knowledge. I haven't even heard it theorized... that was just the explanation my brain came up with on short notice. LOL!

I personally believe sooty turns on eumelanin selectively and so does gray... but to my knowledge that has not been said anywhere, nor have they done work on it... to my knowledge.