 DNA testing
#173760 - 01/07/2008 09:17 PM |
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I have a shepherd who is a rescue. I want out of curiosity to get his DNA breed predicted. He looks pure german shepherd but it'd be interesting to see. Has anyone used any of these services? I found metamorphix Inc and The Wisdom Panel?
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Re: DNA testing
[Re: Kathleen Heth ]
#173764 - 01/07/2008 09:23 PM |
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I have seen some breeders stating that theirdogs are DNA tested?? Why would a breeder of purebreed GSD need to have DNA tests done??
Thanks
Adam
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Re: DNA testing
[Re: Adam Dorn ]
#173769 - 01/07/2008 09:36 PM |
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You can also DNA test to prove parentage not just breed.
I guess bloodtyping isn't required for dogs. I don't know dog registration requirements just horses. I have Walking horses and our breed is switching from bloodtyping to DNA testing. I have heard you can register pups through AKC from a litter with multiple fathers as long as the pups are DNA tested to show who fathered who. I'm thinking canine registration is pretty easy to falsify, that's probably why some breeders DNA test to prove their parentage is true.
But, I am not interested in verifying parentage I want to determine breed of my dog. There is no reason other than curiosity!
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Re: DNA testing
[Re: Adam Dorn ]
#173770 - 01/07/2008 09:36 PM |
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It is done for purebred dogs who have sired or may sire a lot of puppies. I think it is done so that the offspring can later be positively identified as progeny of that sire in a case it ever comes into dispute. For example, a breeder may falsely claim a famous sire on a pedigree to increase the value of the puppies.
It is a completely different test than the OP was asking about though.
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Re: DNA testing
[Re: Adam Dorn ]
#173773 - 01/07/2008 09:39 PM |
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I have seen some breeders stating that theirdogs are DNA tested?? Why would a breeder of purebreed GSD need to have DNA tests done??
Thanks
Adam
One reason might be so the buyer knows exactly what they are getting?
Ed had a problem with an Aussie "breeder" who bought frozen semen from Ed's stud, Natan. Ed explains why he wanted DNA testing here:
http://www.leerburg.com/forums/ubbthreads.php/ubb/showflat/Number/117733/page/1#Post117733
Lots of dishonest folks out there 
True
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Re: DNA testing
[Re: Kathleen Heth ]
#173775 - 01/07/2008 09:53 PM |
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Heh, Kathleen, we posted 3 seconds apart.
Unfortunately, I dont have any experience with either test, but I don't think the Metamorphix test can tell you whether your dog is a purebred or not. I think it just looks for a list of relatively common breeds and if it doesn't find any specific DNA traces of them the results will just come back as "GSD" (assuming the GSD markers are present).
There also are some fairly common breeds that aren't included in the test.
If you want to do it though, it wont hurt anything. (And you will be reasonably sure he isn't any of the tested breeds)
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Re: DNA testing
[Re: Kristin Mortensen ]
#173778 - 01/07/2008 10:14 PM |
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There are a few types of dna tests to pick from. All of my dogs male and female have a dna profile with akc. Reason for this and reason I believe this should become a standard practice for breeding stock is that it leaves few questions about the true parentage of a dog. AKC has had a history of fraud in this regard and I find it comforting to know that my breeding stock and practices should never be in question.
the second is for dna mixes via breed markers. If this dog looks shepherd he likely is. Pretty much all the breed marker tests will tell you is that he's prodominately GSD as I understand it. I guess I'm kinda confused if he is a rescue I assume he's fixed and since he appears GSD why would it matter what he's crossed with? I understand it for pit mixes because if you can identify the marker your home owners insurance might be tolerable. Better claiming a beagle, lab, or hound mix than pit mix.
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Re: DNA testing
[Re: Melissa Thom ]
#173793 - 01/08/2008 12:36 AM |
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All Four Parents of My Two G.S Pups Fred and Goran are DNA,
Plus in December when i had Freds Hips and Legs Xrayed to see if they were okay i also had him DNA'd at the same time. I was asked if i wanted it done while they were doing his hips and it took but 10 seconds for them to take blood samples.
They gave him a jab and he was out in less than 10 seconds
I have not yet had the results back.
I am now told it will take a few months
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Re: DNA testing
[Re: Kathleen Heth ]
#173829 - 01/08/2008 10:31 AM |
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I had my dog, Doerak, DNA tested with Metamorphix about a year ago before they updated their list of breeds. http://home.earthlink.net/~hrpmann/dogs/ (Doerak is the black one. You can click on his photo for more photos.)
The people I got him from said he was from Holland, but couldn't provide any documentation to that fact. And Metamorphix says their testing only works on North American populations.
My results of the DNA test showed no primary or secondary breeds. The final catagory was called "in the mix" and showed Collie, St. Bernard, and Shih Tzu.
Somebody on the Working Dogs Forum has an obvious Malinois mix who came back as a Swiss Mountain dog "in the mix."
I would really like to hear from somebody who actually had believable results.
Oh, the AKC accepted Doerak as a GSD for ILP purposes.
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Re: DNA testing
[Re: Carole Goetzelmann ]
#173837 - 01/08/2008 11:14 AM |
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I have to "out" myself here - I'm a genetics professor (hope that doesn't get me banned from the board for being a pointy-headed academic...) My research is in population genetics (not dogs, but I do teach genetics to vet students so I pay attention to what's going on with dog DNA research). I use the kind of markers (SNPs) in my university research lab that Morphometrix say they use, and frankly I think their claim that they can reliably detect the breed components in a mixed breed dog is snake oil. I won't go into all the technical and statistical reasons why, but different breeds of dog differ from each only in very small parts of their DNA, and finding single-base differences in the DNA code that are 100% diagnostic of a particular breed is unlikely. Carole's post about being told her dog had St. Bernard and Shih Tzu DNA cracked me up, but I'm not surprised.
DNA fingerprinting to identify an individual dog (or human) is a different technique, BTW, and there is no question that it works.
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