Friday- 3/17/06

[h2opony]

you know what i was thinking about something... what color are his parents, and what color are her parents?

[coloredqh]

Blurs sire....................Grullo / roan dam................black

Jess sire......................red roan dam I do not know.

[coloredqh]

I would have to look it up give me a tew on jess's dam.

[coloredqh]

Jess's dam Buckskin

[h2opony]

well first off we have to remember that the color "red" in horse genetics is not just chesnut dun and sorrel it includes dun palomino and buckskin... give me a sec i am going to explain some stuff going to take me a minute to type all of it out..

[h2opony]

TRUE blue roans are very rare in the horse world because you have to have three genetic dominants in a horse... YOu have to have dominant gene for black legs, genetically black body, and roaning...

There are some pretty basic alleles that mainly control these things: red factor, agouti, and roan

Okay things to remember: each gene consists of a pair of alleles one from the dam and one form the sire (i am going to ignore a lot of the other stuff because it gets quite confusing)

The color of a horse's LEGS is controlled by the E and e locus alleles. E represents black legs and e is for red legs. One E is dominant over any other e, so any horse with an E will have black legs...

The color of the horses body is controlled by the allele A. An A means you get a reddish body, and an a means that the body will match the legs isn color. The A is dominant so any horse with an A will have a red based body...

The roaning is controlled by R and r. Any horse with R will be a shade of roan wher as a horse with rr will have no roaning..

HAHA i am not done yet!

[downundermum]

now shes back to holdin the wall up

did anyone find Kelly or do we need a search party

[chato139]

yea kelly jes had a brain fart she been postin up there ^^^^^^^^^^^

[coloredqh]

Here is Blues UC Davis test results

Ee aa

[h2opony]

Why are legs red or black?

Blue roans have black legs, so we know that they care at least one black (non red gene). The black color allele is always dominant over the red color. So in regards to colors represented in genes..

ee is a red bodied horse with red legs
Ee is a black legged horse, body color depends.... *
EE is black legged horse that will always through black legged foals..

So why is the body red or black?

Any horses body color is controlled by the black gene or E. But, if a horse has black legs, the body can still be red based if the horse has a dominant form of the Agouti allele

The Agoutie allels is a dominant gene... if A is present in a foal the foal CANNOT be blue (roan black or grulla) the Agouti gene mainly affects the color of the body but not the legs, mane or tail... A sorrel horse have have one or two Agouti genes, as can a bay (their bodies are red). But as black grulla or blue roan ohrse cannot have any dominant Agouti genes... because they have black colored bodies..

aa = horse with a body color that matches its points (legs mane tail) There is no agouti gene causing the body to be red. The body can either be red or black depending on the red/black genes (e and E)

Aa= horse whose body will always be red never black. This horse can pass along the agouti but wont always

AA= horse whose body will always be red never black. This horse ALWAYs passes along the agouti gene, and will never have a true black, blue roan, or grulla.

So Duns are usually...
EE or Ee
Ae or AA
Ee Aa, Ee AA, EE Aa, EE AA

Blue roans are usually
Ee or EE
aa (black legs black body)
Ee aa, or EEaa

[coloredqh]

So given Blues results? now what do you think on foal color?
For Riley and Jess

[h2opony]

ROAN GENETICS:

The roan gene creates a body or hip variation that is of white or white mixed with head color, the capital letter R represents roan, and the small letter r represents lack of roaning

rr= no roan markings (Riley)
Rr = roan pattern present but does not always pass it on
RR= Roan markings present and will always pass them on.. both of the horses parents must have carried roan pattern or expressed roan pattern for this to be true in a horse. Rarely found because the theory is that the fetus dies in utero when it carries two roan genes

[downundermum]

Skye- these are before and after photos of Em's pony mare that we are selling.





Hope these work.

[h2opony]

Well for Rilely... we are definately going to have a roan and its going to have black points... i would say a dun roan or buckskin roan... because her dad was roan blue is a roan etc...

[h2opony]

wow veronica what a transformation! Give your daughter a pat on the back!