Can my grey stallion carry a roan gene too? - The Horse Forum

View Poll Results: Can my stallion carry the grey and roan gene?
Yes 3 50.00%
No 0 0%
Yes and will pass both off to foals 1 16.67%
Yes and can pass either one or the other off to foals 2 33.33%
Voters: 6. You may not vote on this poll

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post #1 of 14 Old 11-29-2011, 10:21 PM Thread Starter
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Can my grey stallion carry a roan gene too?

I have a grey stallion and our foals seem to have some roaning going on. I know that if the grey gene is passed on that the foals will eventually go grey as grey is dominate. The stallion is from "Hancock bloodlines" which I know have many famous roan horses. Is it possible for the stallion to carry both the grey and roan genes and if so can he pass only one on to his foals or both?

Born Chestnut and turned red roan in color (7 months old)
https://picasaweb.google.com/alajupi...17416135369426
Face does have white hairs
https://picasaweb.google.com/alajupi...16449677156018

Another one roaning also has white hairs on face (about 1 1/2 years old)
https://picasaweb.google.com/alajupi...18811317918946

This one stayed chestnut but has one patch roaning??? (7 months old)
https://picasaweb.google.com/alajupi...16979101526514

This one has a dark face (no white hairs) and legs have darkened up from this picture. Looks like a typical roan.
https://picasaweb.google.com/alajupi...20189634350178
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post #2 of 14 Old 11-29-2011, 11:13 PM
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What colour was the stallion before he greyed? That is more important than if he is grey or not. As for if he can pass it on - if he is a roan himself under the grey, then yes, he can. If he isn't, then no, he cannot.

Grey is like a blanket - it doesn't take the original colour away, it just covers it.


Also, the picture links are not working :(

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post #3 of 14 Old 11-29-2011, 11:22 PM
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Get him colour tested with UC Davis. It is, I believe, about $45US, and takes all the guess work out.

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post #4 of 14 Old 11-29-2011, 11:44 PM
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Can't see the pictures, but most gray foals go through a roany looking stage. Like so:



That guy will turn white or fleabitten eventually.

That said, yes, it is possible that your stud is also a roan beneath the gray, and he can pass both genes on, even to the same foal.
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post #5 of 14 Old 11-30-2011, 12:01 AM Thread Starter
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I'm not sure what color he was before he went grey. Only says grey on his papers. He does have a roan in his lineage and his father and grandfather were grey so maybe it is masked. Not sure why the photos are not working. Really wanted you all to be able to see them:( I'm going to get him tested but in the mean time just educating myself:)
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post #6 of 14 Old 11-30-2011, 12:10 AM Thread Starter
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Links to photos should work now:) Changed my sharing to the web.
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post #7 of 14 Old 11-30-2011, 12:28 AM
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Only the last of those pictures looks like a classic roan to me. The others look like they are graying out because of the amount of white on the face. Roan wouldn't do that.

The one with the single roaned patched is probably caused by tobiano or sabino, not roan.
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post #8 of 14 Old 11-30-2011, 01:14 AM
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Agree with Po. First two are definitely grey IMO. The chestnut and white is just the tobiano or sabino like Po said. The last looks classic roan. If the last foal's dam is not at all roan, then your stud is probably a roan.

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post #9 of 14 Old 11-30-2011, 07:15 PM Thread Starter
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Thanks for all of the information!! The mare of the roan foal does not appear to be roan herself. She does have very few white hairs throughout her coat though but nothing that looks roan unless roan can be very subtle. She is a bay. Im glad I found this forum and will continue to use!! I have another colt that was born palomino. He is out of the same grey stallion and his mother is a tobiano buckskin. He has been really light since birth but recently has been starting to change. From his recent pics do you think he will darken or turn grey?

https://picasaweb.google.com/alajupi...43662008571666

https://picasaweb.google.com/alajupi...43604106789202

https://picasaweb.google.com/alajupi...43559212482866

https://picasaweb.google.com/alajupi...43771665072802
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post #10 of 14 Old 11-30-2011, 07:50 PM
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When breeding a grey horse you have to consider what his underlying color was at birth that is color that you are basing your color possiblities on.It is after that you will see if that color will be modified by the grey gene.If the horse was born a roan then they most definitely can pass it on.Grey is just a modifys the original color. Grey horses will pass on that grey 50% of the time to their offspring.{unless they are Homozygous for grey then grey will be a given}.
I have bred to grey stallions & yes they did grey out. The one stallion was Palomino based grey,so he carried a dilute gene as well,so he also did sire quite a few pally offspring that didn't grey out.
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grey , horse colors , horse genetics , roan , tobiano

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