Q: I work for a magazine and we're doing an article on breeding dogs and the genetic problems it can cause. What are some of the genetic problems? Can you recommend any websites? Thanks
A: Inbreeding no matter purebred or not is dangerous it always carries risks.
Breeding will always have risks purebred or not inbred just more so.
Before breeding you have to take dogs to the vet to have a vet check AND genetic tests because some purebreds and yes MUTTS have genetic problems.
Only reputable purebred breeders not just any breeder of purebreds will understand what I am talking about.
there is no such thing as hybrid vigor in dogs because unlike Hercules the liger whose parents were the same genus but different species. a mutts parents are the same genus and same species but a different breed.
Hybrid is a word to take the place of species as they have none.
Mutt is a word to take the place of breed as they have none.
Good breeders will do hip test to ensure the dogs do not have hip problems they could pass on to future generations.
With a golden dooldle that was not and is not done.
When fully mature both parents should have tests done on the eyes and hips at least. as both breeds have problems with that. 1 out of every 10 labradoodles may not shed badly but will still shed that is why the person that took up trying to make it a breed and standard gave up on it.
Unfortunatly the cad named it as one would a hybrid (or rather tried to) sire first them dam (lab-doodle) but they are mutts. a hyrbids name takes species because it is necessary. a breed name is not necessary with a mutt because its parents were domestic dogs.
Here is a mutt not tested as it should be because"he can see fine"
Rr=carrying recessive for blind
He mates with another Rr, 50% chance the pups will be blind and the others are now carriers. they had no clue because they didnt test.
Then hip 50% chance the pups will have hip problems when older.
EVEN IF SOME PROBLEMS DO NOT SHOW EXTERNALLY IT IS IN THE DNA and WILL crop up again in another generation or later in that generations life.
A dog from a reputable breeder that did the genetics checks
RR= no recurring recessive trait. such as blindness or hip displacement.
90% chance for healthy pups depending on the breed if it was a GSD that had the tests 95%. i will nto give 100 because there are possible complications with any litter however it is altogether higher from one that hasnt been tested.
Reputable breeders will try to avoid breeds carrying recessive traits to harm future generations if they inbreed which i have yet to meet one show breeder that would or has they would do it to find out if their were dormant traits in a bloodline then they would either cull or spay/neuter the offspring.
In humans
X=female
y= male there is a 50% chance of male or female kids same with dogs.
color:
If you have two grandparents one black one white.
BB=black
ww=white
The offspring would be Bw (black with a recessive white gene) so if one of them mated with another Bw they would have white in the litter.
With inbreeding or linebreeding and reputable breeders MOST reputable breeders do not do this. just because they breed purebreds doesn't make them reputable.
For instance I ran across a puppy mill in alaska breeding RED rottweilers.
bred brother to sister both carried Br
Sometimes when rotts are inbred or when selectively bred they will have a red pup.
These ppl insured they would get only reds by breeding the siblings together over and over again until they had RR.
The bones of these animals were weak there minds not all there.
In the end if anyone out their knows about the white tiger fraud its alot like that inbreeding claiming it as rare but it has a shorter life expectancy and a passel of problems.
Color can be accomplished without genetics tests but with a little info into the backgrounds. these ppl didnt do genetic tests.
I have seen mutt breeders saying they have hybrid vigor so they dont vet check, or genetic work or anything.
Let me label off some:
pomchi- liquid on the brain
palpipoo- weak legs
other: warped legs,
puggle: breathing and respiratory problems.
How do these occur? because no testing was done and no thought went into each breed that would make the mutt. each breed has their problems. the temper should also have been considered. you don't know what parent they will take after EXTERNALLY but their is a 50% that they will inherit a dormant recessive problem or pass it on if the parents weren't tested because they will always pass it on to the kids the problem is 50% it will show up and if it doesn't it might show up in another generation,
Goldens: eyes and hips
bulldogs: breathing and respiratory problems
pug: breathing and respiratory problems
Source(s):
a college education in genetics, zoology, animal science, wildlife bio
answers.yahoo.com
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