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 Extreme Veteran
Posts: 430
 
Location: Purcell Ok | I don't know a lot when it comes to the color testing, but one of our stallion owners want his stallion tested.
Is UC Davis the best place?
What would you test would you pick for a Blue Roan stallion? Roan gene only?
TIA! |
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  The Color Specialist
Posts: 7530
  
Location: Washington. (The DRY side.) | It depends on what colors his sire and dam are. (If one is red, there is no reason to test to see if he is homozygous black.) What colors ARE his sire and dam? |
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Extreme Veteran
Posts: 430
Location: Purcell Ok | Sire is Red Roan
Dam is bay |
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 Champ
Posts: 19623
Location: Peg-Leg Julia Grimm | What would they like to know?
I tested a colt I got in 2015 for gray, bay, and black/red because the parents were both gray, my mare was born bay and both parents have a red parent. His phenotype was gray and bay which said a lot about him. But I wanted to know more. He is homozygous for gray, is heterozygous for bay and black. Which means he will throw gray 100% of the time, red or black 50% of the time and if the foal is black based, it will have 50% chance of being bay or black. |
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Champ
Posts: 19623
Location: Peg-Leg Julia Grimm | MinorRed - 2016-01-12 7:54 AM
Sire is Red Roan
Dam is bay
It depends on what they are calling red roan. Bay roan used to be called red roan. If he's a bay roan, he is actually black based with an agouti gene. If he is red with roan, he is red based.
I had my testing done through UC Davis. I think they were slightly less expensive. It took a couple of weeks. |
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The Color Specialist
Posts: 7530
Location: Washington. (The DRY side.) | Do you know if the sire is REALLY a "red"(sorrel/chestnut) roan, or if she is really BAY roan? (Until the early 2000's bay roan was NOT an option for registering a horse. So horses with a bay base coat were generally registered as "red".)
How old is this stallion?
Edited by RacingQH 2016-01-12 11:13 AM
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Extreme Veteran
Posts: 430
Location: Purcell Ok | Sire is One Time Pepto he is red roan
Dam(bay) is by High Brow Cat out of a bay mare |
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The Color Specialist
Posts: 7530
Location: Washington. (The DRY side.) | There is no need to test this horse for roan. He IS heterozygous for roan since he only has one roan parent. If the sire is a true RED roan, there is no need to test for black/red. You KNOW he (the stallion in question) has one copy of each. |
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Extreme Veteran
Posts: 430
Location: Purcell Ok | Thank you. This is what I thought. Owner just wants it on paper.
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Common Sense and then some
Location: So. California | Maybe the owner means the 5 panel test that is required for all AQHA breeding stallions? |
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Extreme Veteran
Posts: 430
Location: Purcell Ok | Anniemae - 2016-01-12 12:18 PM
Maybe the owner means the 5 panel test that is required for all AQHA breeding stallions?
We did that last year. He's had lots of people ask about color. |
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 Take a Picture
Posts: 12842
| OregonBR - 2016-01-12 10:27 AM
What would they like to know?
I tested a colt I got in 2015 for gray, bay, and black/red because the parents were both gray, my mare was born bay and both parents have a red parent. His phenotype was gray and bay which said a lot about him. But I wanted to know more. He is homozygous for gray, is heterozygous for bay and black. Which means he will throw gray 100% of the time, red or black 50% of the time and if the foal is black based, it will have 50% chance of being bay or black.
That was interesting. That information just trashed everything that I ever learn in math or biology and everything that I teach in biologytoo. I need to regroup. |
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 Extreme Veteran
Posts: 425
Location: California | I color tested my stud colt with UC Davis. Results came back fairly quick.
My colt is out of two grey parents, but is black. I wanted him tested so I would be prepared for him to turn grey. I tested him for grey, black and red gene. He is homozygous for black. No red or grey gene.
I think a lot of people like to see the results on paper. When I was young (12) & got my first horse, she was supposed to be a true blue roan... & nope. She turned grey 
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Champ
Posts: 19623
Location: Peg-Leg Julia Grimm | ccarpe18 - 2016-01-12 1:19 PM
I color tested my stud colt with UC Davis. Results came back fairly quick.
My colt is out of two grey parents, but is black. I wanted him tested so I would be prepared for him to turn grey. I tested him for grey, black and red gene. He is homozygous for black. No red or grey gene.
I think a lot of people like to see the results on paper. When I was young (12) & got my first horse, she was supposed to be a true blue roan... & nope. She turned grey
What is your colt bred like? Pictures? |
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Champ
Posts: 19623
Location: Peg-Leg Julia Grimm | streakysox - 2016-01-12 12:56 PM
OregonBR - 2016-01-12 10:27 AM
What would they like to know?
I tested a colt I got in 2015 for gray, bay, and black/red because the parents were both gray, my mare was born bay and both parents have a red parent. His phenotype was gray and bay which said a lot about him. But I wanted to know more. He is homozygous for gray, is heterozygous for bay and black. Which means he will throw gray 100% of the time, red or black 50% of the time and if the foal is black based, it will have 50% chance of being bay or black.
That was interesting. That information just trashed everything that I ever learn in math or biology and everything that I teach in biologytoo. I need to regroup.
Is there something I can answer? I've read quite a bit about color genes. |
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Extreme Veteran
Posts: 425
Location: California | OregonBR - 2016-01-12 1:41 PM ccarpe18 - 2016-01-12 1:19 PM I color tested my stud colt with UC Davis. Results came back fairly quick.
My colt is out of two grey parents, but is black. I wanted him tested so I would be prepared for him to turn grey. I tested him for grey, black and red gene. He is homozygous for black. No red or grey gene.
I think a lot of people like to see the results on paper. When I was young (12) & got my first horse, she was supposed to be a true blue roan... & nope. She turned grey
What is your colt bred like? Pictures?
The stud colt is not Quarter... he's an Andalusian. LOL I had always wanted one since I was a little girl. |
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 Expert
Posts: 4121
Location: SE Louisiana | 
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 My Heart Be Happy
Posts: 9159
Location: Arkansas | komet. - 2016-01-12 7:05 PM
Leave it to you, Komet! |
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Common Sense and then some
Location: So. California | The stallion in question is a Blue Roan?
Sire: red roan
Dam: bay
black (heterozygous), roan (heterozygous)
EeaaRnrn
Are you sure the stallion is a true blue roan and not a dark bay roan? I've known several people claim they had a blue roan, when the horse was actually a dark bay roan.
If the owner wanted to test: black, agouti and roan.
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 Expert
Posts: 2674
Location: Silver Lake, MN | So when you say red or black 50% of the time and if the foal is black based, it will have 50% chance of being bay or black you are talking about the base color correct? Cause all his foals will turn grey? I'm stilll learning about this stuff. |
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Champ
Posts: 19623
Location: Peg-Leg Julia Grimm | CarrieH77 - 2016-01-14 10:42 AM
So when you say red or black 50% of the time and if the foal is black based, it will have 50% chance of being bay or black you are talking about the base color correct? Cause all his foals will turn grey? I'm stilll learning about this stuff.
100% of his foals would be gray. But they still have a base color.
He is heterozygous for black = one black and one red
This means he will contribute black 50% of the time and red 50% of the time. That doesn't mean the foal has to be red or black. It depends on what the mare contributes. If he gives a red gene and the mare gives a black gene the foal will be black based. Because black is dominant.
If the foal has at least one black gene and the mare contributes no bay (agouti) gene, 50% of those foals will be bay or brown because he is heterozygous for bay/brown.
Edited by OregonBR 2016-01-14 12:53 PM
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Expert
Posts: 2674
Location: Silver Lake, MN | Very cool thank you for the additional info. I think a lot of people forget about base colors on grey horses, it plays a big impact on what the foals will be. Still remember Macho too by the way. He has always stuck in my mind. |
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