5-panel clear only: AQHA, APHA, ApHC Futurities - The Horse Forum
View Poll Results: Should AQHA, APHA, ApHC only allow 5 panel clear horses in their World Show Futuritie
Yes, all AQHA, APHA, ApHC National and World Champion Futurities allow entry of only 5 panel clear horses only 4 50.00%
Yes, phase in 5 panel clear World Show requirement over 5 years 1 12.50%
No 3 37.50%
Voters: 8. You may not vote on this poll

 
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post #1 of 5 Old 05-06-2016, 10:57 PM Thread Starter
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5-panel clear only: AQHA, APHA, ApHC Futurities

With AQHA, APHA ApHC foals numbers on the decline, and more breeding stallions and mares testing positive for: HYPP, PSSM, HERDA, GBED and MH, is it time for AQHA, APHA and ApHC to change futurity rules to allow only 5-panel clear horses to enter World Show Halter and Performance Futurities, in order to ensure strong genetic breeding populations for future generations of horse breeders, owners and trainers?:runninghor se2:
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post #2 of 5 Old 05-06-2016, 11:36 PM
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Not really, as you can't lump HYPP , which is a dominant autosomal defect, with recessive ones that only cause clinical disease, if two carriers are bred together, and both pass on that defective gene
Those tests then, allow a conscientious breeder, not to breed two carriers of a recessive genetic defect, yet don't 'throw the baby out with the bathtub', or cut off your nose to spite your face!
I agree that no positive genetic dominant defect animal should be allowed to breed. Hypp is an example of that.
You can never regulate that a breed registry has to be free of all genetic defects, as they are constantly occurring, but you can demand that they be free of genetic disease. That means, one should not be able to breed together, two carriers of something like HERDA, which is a recessive genetic defect, thus carriers, who are perfectly fine, and heterogeneous, should not be bred together , thus risking a homozygous offspring, with clinical disease. Stock horse breeds are not the only ones that carry recessive genetic defects, as some Arabians carry SCID , LFS (Lavender foal syndrome some paints carry LWO, and draft horses carry their own recessive genetic defects

Draft Horses Two of the most important genetic conditions in draft horses are PSSM and junctional epidermolysis bullosa (JEB).

Warmbloods Researchers believe German Warmbloods have a genetic condition that causes guttural pouch tympany. In one report of a genome-wide analysis involving 373 German Warmbloods, researchers identified a region on ECA3 they say might be responsible, but they note that additional studies are needed to better characterize the exact genetic mutation.


I could go on, but will give the link instead. Point being, all breeds have genetic defects, most of which are recessive, meaning that those carriers are perfectly normal, and testing gives you the ability to be a 'smart breeder, and not breed two carriers together.
Trying to get rid of all carriers of these recessive genetic defects, is similar to throwing the baby out with the bath tub!

Genetic Disorders: Breed by Breed | TheHorse.com
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post #3 of 5 Old 05-06-2016, 11:45 PM
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I don't find more breeders standing parents with these genetic defaults. If anything I find the public becoming more aware of them, and wanting 5 panel clear horses.

Some older stock that have babies on the ground, and are now just getting tested is where I see the problem.

For example:
I know a breeder that tested her 19 year old 3 time world champion. No reason to assume she had PSSM1, she had old bloodlines. Nothing known in them, no symptoms.. but she turned up n/PSSM1, and so did two of her previous foals.

It will take many generations to get rid of the defects, but the more buyers become educated, the more the demand for 5 panel clear horses rise, the more breeders will only breed 5 panel clear horses. At least that's my hope, it's all about supply and demand.

No reason to punish the horses currently on the ground though, by not allowing them to show.

EQUUS KEEPUS BROKUS

Last edited by Drifting; 05-06-2016 at 11:51 PM.
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post #4 of 5 Old 05-07-2016, 02:51 AM
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Quote:
Originally Posted by Drifting View Post
I don't find more breeders standing parents with these genetic defaults. If anything I find the public becoming more aware of them, and wanting 5 panel clear horses.

Some older stock that have babies on the ground, and are now just getting tested is where I see the problem.

For example:
I know a breeder that tested her 19 year old 3 time world champion. No reason to assume she had PSSM1, she had old bloodlines. Nothing known in them, no symptoms.. but she turned up n/PSSM1, and so did two of her previous foals.

It will take many generations to get rid of the defects, but the more buyers become educated, the more the demand for 5 panel clear horses rise, the more breeders will only breed 5 panel clear horses. At least that's my hope, it's all about supply and demand.

No reason to punish the horses currently on the ground though, by not allowing them to show.

Unfortunately, many people don't understand genetics, thus go on a ;witch hunt'

Read the info I posted. ALL breeds have recessive genetic defects, with that carrier being normal. All any breeder has to do, is have his mare or stallion tested, and then make sure to also have the test results from the other part of that breeding, and then avoid breeding two carriers together
All dominant genetic defect positive horses should not be allowed to breed.
Recessive genetic defects only become apparent, when horses with similar ancestors are bred together, thus two carrier mated. Genetic testing avoids that possibility, yet still allows those good genetics, as in cutting bred lines, that carry HERDA, going back to Poco Tivio, often with generations in between, not showing any problem, because two carrier were never mated
There is absolutely no problem, breeding a horse that carries HERDA or GEBD, to a horse that tests negative for either. No affected foal possible
The recessive genetic defects in AQHA horses have become well known, for the simple fact of the sheer number of AQHA horses.
Combined Immuno deficiency and lavender foal syndrome have been present in Arabians for many years, yet, far as I know, this un-scientifc type of culling has never been suggested in that breed.
How about Paints that carry LWO or deafness?
Genes constantly mutate , and new recessive genetic defects wil continue to occur. Cull all those horses, and soon you will have a breed with very few lines of horses.
AGAIN, A BREED SHOULD STRIVE TO BE FREE OF GENETIC DISEASE, BUT NOT TRY TO ELIMINATE ALL CARRIERS , THAT ARE NEVER AFFECTED, AND, WHO WILL NEVER PRODUCE A CLINICAL DEFECTIVE BABY, AS LONG AS THAT HORSE IS NOT BRED TO ANOTHER CARRIER
.it is unfortunate that many people don`t understand the difference between a dominate genetic defect, like hypp, and recessive genetic defects like HERDA, far as mode of inheritance and expression
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post #5 of 5 Old 05-07-2016, 04:27 AM Thread Starter
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PSSM1 is a dominant gene!
According to Animal Genetics UK, "Polysaccharide Storage Myopathy (PSSM) is a dominant autosomal hereditary condition that causes a genetic form of tying-up with muscle damage and inability to move. "
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