what will happen if two dogs both from the same mom but different dads breed and have puppies?

Answer 1

Hi,
This is what Breeders term as line breeding,there is some info below on all types of breeding.
In-breeding

Inbreeding is the mating of very close relatives, for example, father to daughter, half-brother to half-sister, brother to sister, mother to son, etc.

Inbreeding intensifies the faults as well as the strong points, so considerable discretion must be used in the choice of the dogs. The faults may be to such an extent, that, sometimes, entire litters have to be destroyed in cases where obvious anomalies occur. For this reason, this type of breeding is not recommended to novice breeders.

Sometimes, in-breeding is the only option available, for example, in the re-creation of a nearly extinct breed or in breeding programs of newly created breeds.

Line-breeding

Line breeding is the mating of dogs having many common ancestors or mating to a slightly removed relative, e.g. granddaughter to grandsire, uncle to niece, etc.
The benefit of line-breeding is the production of more consistent litters.

In order to have a chance to reinforce desired characteristics and eliminate health problems one has to have a thorough knowledge of both pedigrees of both the sire and the dam for at least five generations.

In general, most breeders adhere to a policy of line breeding, whereby they can assure uniformity of quality without risking the inherent dangers of inbreeding.

This technique appears to be the best compromise between inbreeding and the doubts of outcrossing or outbreeding.

Out-crossing

Outcrossing is the mating of two dogs that are the products of line breeding but of two distinctly separate lines.


Unless the two dogs involved in an outcross are strongly linebred with a possibility of a certain measure of prepotency, uniformity to the first generation is generally doubtful. It is generally employed as a long-term proposition to bring certain traits into a line that are otherwise deficient. These traits then need to be intensified by proper line breeding or inbreeding

Out-breeding

Outbreeding is the mating of two dogs who not only are the products of two distinctly separate lines, but on top are not the products of line breeding.

Outbreeding is seldom employed since in most breeding programs dogs that would qualify for outbreeding simply do not exist.


In summary, most successful breeders use some formula involving general line breeding with inbreeding employed when sufficiently outstanding products of their line result and outcrossing only when another line can supply a strong characteristic in which they are lacking.

Answer 2

The dogs are too young to be health tested and you haven't mentioned it in your post. Have you looked to see what each breed should be health tested for? I don't think you're dealing with what if they breed, it's more like when they breed. Your female could have a silent heat and you'll have pups about 60 + days later. Since you aren't health testing these dogs, have you made plans for keeping all of the puppies if they're deformed or ill? A person who cares about their dogs doesn't put 2 of them together and cross their fingers hoping for the best. They make plans for what may go wrong and find homes for the pups before they breed. Why would you want to breed mixed breeds when the pounds are full of them?

Answer 3

This is a common practise with responsible breeders who have had all mating pairs genetically health tested and evaluated by show judges. If the mating pair have no genetic flaws that can be passed on and strong breed standards that compliment each other there is no problem. It's called line breeding. If you are thinkng about doing this with dogs who have not been health certified or evaluated by a show judge of the breed-DON'T DO IT!!!!

Answer 4

This isn't all that unheard of with knowledgeable breeders. Just remember that just like you are 'doubling up' on what is right with your dogs, you are also 'doubling up' on what is wrong. Normally you will find that breeding back to a grandparent will produce more favorable results.
I have often picked the gender of a puppy based on the quality one of it's four grandparents.

Answer 5

The puppies could have all sorts of problems. Its wrong don't do it ,if you think about what happens to kids with closely related parents its the same thing,

Answer 6

From personal experience, I can tell you that you shouldn't have any problem, certainly not with first-generation interbreeding. Or even second-generation. However, you probably don't want to go any further than that as genetic weaknesses will begin to appear. I also should say that genetic diversity is always better than interbreeding if given a choice.

Answer 7

I am pretty sure that thats still in-breeding. But torbaynewfs is corect about the idiot who let them breed a BYB!!!!

Answer 8

They will have puppies; good for you!!! Seriously you will be okay, w/ two different sires and the same mom. You will not be indangering your dogs/puppies.

Answer 9

Inbreeding in dogs is not as complex and risky as inbreeding in humans.

Answer 10

This may not be good, but may not be bad. It is called incest and yes, there could be difficulties. They could have physical or other problems such as sinus problems. This should be avoided as much as possible, but sometimes it does happen. Most likely there will not be any serious problems, but it is definetly possible! Just be aware!