Beginning Color Testing Help
my Ireland and UK Friends.
Why Test ?
I ALWAYS breed for conformation.
Never breed for color over
That said, what if you want a Palomino foal,
Tobiano Pinto instead of a solid,
or sorrel over black or vice versa.
Think this way, if you mix a can of blue paint with yellow paint
ALWAYS be green.
If you mix blue with red,
it will ALWAYS be purple.
The same works with horse colors,
you just can't see it so you have to
know what genes your horse carries.
It is easy and
And thank you, James Slim O'Brien
for letting me use your
color test as an example.
You can look at the letters across the top and then look down to the description
In THIS case (Of James' horse, Snowwhite)
As far as BLACK/RED
you can see she is Heterozygous for BLACK....She carries a black
but also carries a recessive (think lesser), copy of the RED gene.
As far as Agouti (see below for definition)
she is a non-Agouti.
As far as Cream DIllution (see definition below)
she does not carry the Cream
There is too much
information regarding color testing to go into detail here.
This is meant to be a beginning place and where
to find the source of more information.
Don't get freaked out
reading the terminology below.
will explain here in VERY simplistic terms.
You can get very far into studying
percentages of colors, etc.,
but that isn't where we are going with this
VERY BASIC description to help you read your color results.
here will be those who will try to expand upon
but please remember, this is just a BEGINNING place to
you must go to the color testing website (shown below)
and print their form
for exactly what you want to test
.....in this case, we are talking about
testing for COLOR.
You will PULL s few mane
hairs ( NOT cut )
so that the DNA on the very end of the bulb of the hair is
If you cut it doesn't work. Don't touch the end of the
it to the form as indicated by their instructions of how to submit.
You can also call your color testing company
or go to their website to
learn much more detailed info.
They will help you.
For Ireland and
Click the button that says
EQUINE at the top of their
..then EQUINE COAT COLOR TESTING
.........every color pattern they test for is
Red/Black Factor - Agouti - Cream
Dilution - and Tobiano for pinto coloring
+44 1726 247 788
the US we use
An allele is an
alternative form of a gene
(one member of a pair) that is located at a
on a specific chromosome.
These DNA codings
determine distinct traits
that can be passed form parents to offpsirng
bred to Homozygous will always produce a Homozygous foal....no need to test.
Carrying two DIFFERENT genes.
Black and Red Factor
Black is dominant over Red.
Base colors are black, bay, or red.
A dominant gene affecting black. Creates a Bay by modifying
This affects both red and
black pigment making lighter coat colors
such as Buckskin, Cremello,
Bays bred to Homozygous Cremello will have Buckskin.
bred to Homozygous Cremello will have Palomino.
A Homozygous Tobiano's offspring will always be a Tobiano
pinto colored foal.
(This is the
color pattern of Gypsy Cobs.)
You will see one of my Stallions, A Wizards
Spell Sir Winston
as the photo on the color testing website.
He is TOBIANO
If two copies of the gene are passed to the foal, the foal can suffer Lethal
Not pertinent to the Mini Gypsy Cobs as there is no Overo gene in this breed
that anyone has seen. )
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