many said to breed dog with same mother is not good breed. is this true?

Answer 1

NO.

Only if you are not familiar with the genotypes and phenotypes in both pedigrees.

Breeders frequently line-breed (half-brother to half sister , grand-daughter to grand-sire, etc) and occasionally in-breed litter-mate to litter-mate, full siblings, mother to son, daughter to father) to "fix" desired traits in their breeding lines and define a particular kennel or breed-line "type".

If both dogs carry the desired genotype for a certain trait (like correct tail set, leg structure, coat type, etc) then "doubling up" on those genes will ensure that all puppies in the litter will have those traits as well (Remember your high school biology class genetics lessons )

A - dominant allele (such as brown eyes)
a- recessive allele (such as blue eyes)

Dog A (brother) - Aa (Brown eyes- the blue is recessive and does not get expressed)

Dog B (sister) - aa (Blue eyes - both allele copies are the same and are recessive so the blue is expressed)

Puppies are 50% Aa - Brown eyes (blue carriers) and 50% aa Blue eyes.
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Dog A (brother) - aa (Blue eyes - both allele copies are the same and are recessive so the blue is expressed)

Dog B (sister) - aa (Blue eyes - both allele copies are the same and are recessive so the blue is expressed)

Puppies 100% aa - Blue eyes

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Dog A (brother) - AA (Brown eyes - both allele copies are the same and are dominant so the brown is expressed)

Dog B (sister) - aa (Blue eyes - both allele copies are the same and are recessive so the blue is expressed)

Puppies 100% Aa - Brown eyes (blue carriers) the blue allele is recessive and does not get expressed.

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Of course all of the "bad" genes your dogs carry are "doubled-up" as well and will follow the same rules as above, either being expressed or hidden (carriers) depending whether or not the alleles are dominant or recessive.

I should mention that the above example has been simplified. In reality, you can have shared dominance (such as human blood types - AB), Partial dominance (in Flowers Red and White produces Pink), and mulitple genes effecting each other in various ways. Such as the Merle gene's association with deafness and blindness (double merle's are frequently deaf and/or blind).

SO it is imperative that you know what both dogs genetic make-up is like as well as thier ancestors at least 4-5 generations back before you attempt a line-breeding or in-breeding, and extensive testing needs to be performed to ensure he/she is not a "carrier" of certain genetic diseases.

I hope this answers your question.

Answer 2

It all depends on how knowlegable the person breeding the dogs is. A very skilled breeder with a lot of background knowledge on a particular "line" may do it to seal in good qualities of the line, however with the good comes the bad and that is why it should not be done unless your are an expert in your breed and in breeding. Son to mother is the least desirable way, Father to daughter is a little better and two dogs with the same mother but different fathers is even better yet.

Answer 3

A close breeding like that is only done rarely, and then only by a very experienced breeder who really knows what they are doing.

Do you know all the dogs and their littermates in the pedigree for several generations? Has there been any health problems in any of the dogs or their littermates for several generations? Has there been health testing done?

Are the dogs so absolutely perfect that you want to double up on the genes? Remember, just because they do not show a specific problem does not mean they do not carry the gene for it.

A really close breeding like this should only be done by a long time breeder who really, really knows what they are doing. For a novice to do it is only asking for trouble. I have only been breeding for 8 years or so and know I am not nearly knowledgable enough.

Answer 4

Inbreeding is not good. Breeding a mother with her pup is not good at all, this only produces puppies with a greater risk of certain health problems. Inbreeding is why all pure bred dogs come with a higher risk of genetic disorders than mixed breed dogs.

Answer 5

isn't that consider wrong, to me the pup might have some problems at birth, poor developement,it's almost like having a person,male,having sex with his momand that ain't right. thats why god made females of different breeds so you can breed them. more than likely you'll have to find another female dog otherwise you'll end up with a pup with deformities, if this is what you like then do it. if not find another female of that breed.

Answer 6

If you mean that a female dog has pups and then you breed one of her pups with her than yes- that is not good. There is a high risk of genetic defects- just like humans.

Answer 7

yes,it is true..it is in breeding and you could have puppies with different disabilities,so people take big risks to do that,i think it is cruel to an animal and unfair because if the puppies are born un healthy its cruel..i hope people do not do this..

Answer 8

yes inbreeding of dogs is just as bad as in humans it can cause temperment problems as well as brain damage to the dog

Answer 9

Well, anytime you inbreed any species you're going to have problems. But, this is the problem with any "pure-bred" dogs, they're all inbred.

Answer 10

No it is not good but is often done by supposed reputable breeders. It can cause many birth defects.