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-   -   Can my grey stallion carry a roan gene too? (http://www.horseforum.com/horse-colors-genetics/can-my-grey-stallion-carry-roan-104830/)

alfjupiter82 11-29-2011 11:21 PM

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

Chiilaa 11-30-2011 12:13 AM

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 :(

WSArabians 11-30-2011 12:22 AM

Get him colour tested with UC Davis. It is, I believe, about $45US, and takes all the guess work out.

bubba13 11-30-2011 12:44 AM

Can't see the pictures, but most gray foals go through a roany looking stage. Like so:

http://www.grullablue.com/colors/roa...gray_young.jpg

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.

alfjupiter82 11-30-2011 01:01 AM

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:)

alfjupiter82 11-30-2011 01:10 AM

Links to photos should work now:) Changed my sharing to the web.

Poseidon 11-30-2011 01:28 AM

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.

Chiilaa 11-30-2011 02:14 AM

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.

alfjupiter82 11-30-2011 08:15 PM

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

paintedpastures 11-30-2011 08:50 PM

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.:D


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