Description
nSb1
Horse
Courtesy of Joanne Abramson
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The Sabino coat pattern
usually involves a horse having two or more white feet or legs.
The white color typically extends up the legs of the horse to the
belly, usually in irregular or fragmented patches. These jagged
white patches are commonly referred to as barrel spots or belly
spots. Often many Sabinos are characterized by flecks, patches,
and roan areas. Roaning (interspersed white hairs throughout the
coat) is generally seen around the midsection of the horse. The
head of a Sabino horse is moderately white. It commonly has a blaze
or white patch that expands the length of the face. The white areas
of a Sabino horse lack pigment, both in the hair and skin. Another
distinguishing trait amongst sabinos is their eye color. They commonly
have blue eyes and/or partially blue and brown eyes.
More information coming...
This chart shows the possibilities of offspring
when mating two horses.
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-
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nn
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nSb1
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Sb1Sb1
|
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nn
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100% nn
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50% nn
50% nSb1
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100% nSb1
|
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nSb1
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50% nn
50% nSb1
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25% nn
50% nSb1
25% Sb1Sb1
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50% nSb1
50% Sb1Sb1
|
|
Sb1Sb1
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100% nSb1
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50% nSb1
50% Sb1Sb1
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100% Sb1Sb1
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nSb1
- one normal/one Sabino1- probable Sabino pattern
nn
- Sabino1 mutation not present.
Sb1Sb1
- Maximum Sabino
Reference:
Brooks SA, Bailey E. Exon skipping in the KIT
gene causes a Sabino spotting pattern in horses.
Mamm Genome. 2005 Nov;16(11):893-902. Epub 2005 Nov 11.
Sabino
1 Testing
Animal Genetics offers
DNA testing and detection of the gene mutation responsible for the
Sabino 1 coat pattern.
Cost
$25.00
US per sample.
Sample Collection
Collect sample by pulling (not cutting) 20-30
mane or tail hairs with roots attached. It is important that you
pull the hairs and confirm that the actual root of the hair is being
collected. The root contains the genetic material of your horse
that is needed for DNA testing. Therefore, cut hairs do not provide
an adequate sample of your horse. Place the collected hairs of each
horse in a separate zip-lock bag labeling the bags accordingly with
the horses name or identification number. Download and complete
a submission form for each sample and send along with
payment to Animal Genetics for testing.
Results
Results are given using the following symbolic
notation:
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Sb1Sb1
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Tested homozygous
positive (two copies) for the Sabino1 gene mutation. |
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nSb1
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Both normal and
Sabino1 alleles detected. Horse tested heterozygous for Sabino1
and carries one copy of the Sabino1 gene mutation. |
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nn
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Tested negative
for the Sabino1 gene mutation. |
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Offspring Coat
