Genetic Test Results

To view the genetic test results you will need to click on a the horse’s test result link and the test results will

be in PDF format. If you don’t have Adobe Acrobat, you will need to download it before viewing these files.

Dial A Challenge was tested for PSSM, GBED, OLWS - Click here to view his genetic test results.

Big Duke’s Comet was tested for Agouti, HERDA, PSSM, GBED, OLWS -

Click here to view her genetic test results.

Big Dukes Moondancer was tested for Agouti, Appaloosa Lp, HERDA, PSSM, GBED, OLWS -

Click here to view her genetic test results.

Painted Pine was tested for Agouti, Appaloosa Lp, HERDA, PSSM, GBED, OLWS -

Click here to view her genetic test results.

Short But Sassy was tested for Agouti, PSSM, GBED, OLWS -

Click here to view her genetic test results.

Dial A Glorious Nite was tested for Dun Zygosity- Click here to view her genetic test results.

Dial A Sunrise was tested for Dun Zygosity- Click here to view her genetic test results.

Some words about genetic diseases. There are two types of genetic disease genes. Genes like Hyperkalemic Periodic

Paralysis (HYPP) and Polysaccharide Storage Myopathy (PSSM) are known as dominant genes which means that a horse needs

only one positive copy of the gene to be symptomatic. Genes like Hereditary Equine Regional Dermal Asthenia (HERDA),

and Glycogen Branching Enzyme Deficiency (GBED) are known as incomplete dominant genes and it requires both parents to be

carriers in order for the foal to be affected by those genes. When two carriers of an incomplete dominant gene are bred together,

there is only a 25% chance of the foal having two positive copies of the gene which will make the foal affected by the gene.

Now Overo Lethal White Syndrome (OLWS) is a little bit different gene in that in its heterozygous form (O/n) it can cause

a horse to have white on its body or have blue eyes but in its homozygous form (O/O) it will cause a foal to be born pure white and

its bowels are not completely formed and the foal will have to be put down.

HERDA is linked to the Quarter Horse stallion Poco Bueno and causes the skin to not properly adhere to the muscle.

For more information on HERDA there are two places that test for HERDA and they have information about HERDA as well.

http://www.vgl.ucdavis.edu/services/herda.php

PSSM at this point of time has become testable by genetic tests but it is a disease that will cause tying up issues in your

horses because of glycogen not being properly stored in the muscle. To date, they have not been able to link this disease to any

particular bloodline within the AQHA, APHA or ApHC and because of it, they are recommending testing of all stock horses

since this is a genetic disease where horses can carry it, but not be symptomatic or not show symptoms for years.

For more information on PSSM there are two places that test for PSSM and they have information about PSSM as well.

http://animalgenetics.us/wordpress/category/equine-genetics/pssm/

GBED is linked to the Quarter Horse stallions King and Zantanon and causes a foal to not properly function because the

glycogen is not being properly stored in the muscles and the foal will be weak.

For more information on GBED there are two places that I am aware of that test for GBED and have information available.

http://www.vgl.ucdavis.edu/services/gbed.php

OLWS is a gene that when a horse is heterozygous (O/n) for the gene it can cause them to have white upon the Frame of their

body or the horse can just have blue eyes or not even show any signs of being heterozygous. Where the problem comes into

play with this color gene is when two OLWS heterozygous (O/n) horses are bred together, there is a 25% chance of them

producing a foal that could be homozygous (O/O) for OLWS. These foals will have to be euthanised shortly after birth because

their intestinal system is not complete. OLWS is found in many breeds of horses including the Quarter Horse,

Thoroughbreds and Paints. OLWS is also known as Lethal White Overo (LWO) and Frame.

For more information and places that test you can click on these two links.

http://www.animalgenetics.us/LWO.htm

Another area of testing that I have been getting into is coat color testing and there are three places that I use depending

on what type of coat color testing that I need to have done. My favorite place to use is Animal Genetics, and they can do

many different types of testing and soon they will also be offering testing for the Appaloosa Lp gene. The horses of mine

that were tested for Appaloosa Lp were done under their controlled testing of gene. I have been very happy with Animal

Genetics as they offer a very fast turn around time and will keep your horses DNA on file for a bit so if you need

additional tests run, you can just call and order those tests. Also, Animal Genetics offers a coat color calculator so you

can see what color you might have the possibility of getting with crossing one color with another color. Great for the

person just starting to learn about coat colors or trying to breed for a specific coat color.

I have also used UC Davis for Dun Zygosity testing and they also offer Roan Zygosity testing along with many coat color

and genetic disease testing as well.

For those interested in finding out of their horse contains the seal agouti gene which can make a horse that carries the

black gene look brown, you can use Pet DNA Services of AZ.

Here is a couple of websites that I have found excellent for learning more about color genes:

http://www.whitehorseproductions.com/equinecolor.html

Contact:
LL Appaloosas - Loretta Grosset
1178 Prairie Breeze Lane, Burns, WY 82053
Home: (307) 547-3988 Cell: (307) 631-1716
Click here to email LL Appaloosas

For anyone interested in learning more about the Appaloosa gene Lp and the yet to fully be discovered Patn genes,

you can go to the Appaloosa Project’s website and read on what they have available and if you would like to learn

even more you can subscribe to them as well.