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Breeding back to mom??
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<blockquote data-quote="usernametaken" data-source="post: 482537" data-attributes="member: 6820"><p>Actually Backhoe, I think he was talking about the opposite. I am going to hope what I say next makes some sense, as it is hard for me to describe the concept. I think, because the granddaughter would have such a tight set of genes he means if I then breed her to an outcross ( when I say outcross I am thinking a different line of the same breed, but could be a different breed as well.) If some genes, such as hip dysplasia, take more than 1 gene from each parent, in other words, if it takes 3 genes to express hip dysplasia, and the pup got 2 genes from the linebred parent with a history of culling behind it and 1 gene from the outcross parent, that what that outcross parent with little or no history of culling could present might more easily be the 1 missing link to make the trait go bad. Or if the pup got 2 genes from the outcross parent and 1 from the linebred parent the likelihood of the genes that had been culled out now finding a way to express themselves could be much higher. Higher than a linebred dog that is not so inbred as would be in this case. I think that would be the case in all linebreeding that when you add an occasionally outcross you risk exposing some stuff you don't want to see again, but would be increased by the fact the animal was not only linebred but inbred. </p><p></p><p>You would of course see some positives also, such as an increase in fertility, # of offspring, vigor. </p><p></p><p>Hope that makes some sort of sense. I know it sounds crazy but I also know I had one buyer check with the Univ. at Columbus, Ohio and they agreed with my vet. Other vets have disagreed. Auburn agreed, which is where my vet was trained. I just don't know enough to know for sure.</p><p></p><p>Melissa</p></blockquote><p></p>
[QUOTE="usernametaken, post: 482537, member: 6820"] Actually Backhoe, I think he was talking about the opposite. I am going to hope what I say next makes some sense, as it is hard for me to describe the concept. I think, because the granddaughter would have such a tight set of genes he means if I then breed her to an outcross ( when I say outcross I am thinking a different line of the same breed, but could be a different breed as well.) If some genes, such as hip dysplasia, take more than 1 gene from each parent, in other words, if it takes 3 genes to express hip dysplasia, and the pup got 2 genes from the linebred parent with a history of culling behind it and 1 gene from the outcross parent, that what that outcross parent with little or no history of culling could present might more easily be the 1 missing link to make the trait go bad. Or if the pup got 2 genes from the outcross parent and 1 from the linebred parent the likelihood of the genes that had been culled out now finding a way to express themselves could be much higher. Higher than a linebred dog that is not so inbred as would be in this case. I think that would be the case in all linebreeding that when you add an occasionally outcross you risk exposing some stuff you don't want to see again, but would be increased by the fact the animal was not only linebred but inbred. You would of course see some positives also, such as an increase in fertility, # of offspring, vigor. Hope that makes some sort of sense. I know it sounds crazy but I also know I had one buyer check with the Univ. at Columbus, Ohio and they agreed with my vet. Other vets have disagreed. Auburn agreed, which is where my vet was trained. I just don't know enough to know for sure. Melissa [/QUOTE]
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