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Location: UK
Joined: Apr 2006
Posts: 1,558
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I should start by saying that I'm not a breeder and never have bred any animal so know nothing about breeding practices. My dogs are speyed and neutered.
I recently received a copy of my boy's pedigree and noticed that there is father to daughter mating over three generations. Should this be a concern or is there a valid reason for why father and daughter would be mated?
I should add that my boy is 7 years old and has no health problems that I'm aware of so far
I consider breeding this close should be done only in exceptional circumstances. Inbreeding does increase the chances of problems occuring in the pups and the closer it is, the greater the chances. It does help if there is good knowledge of the lines and all possible health testing has been done, but still there are always genetics defects lying undetected and the closer the breeding, the higher the probability of doubling up and producing these in the pups.
However, regarding your pedigree... if the father x daughter mating is over three generations ago it is of little significance to your dog, only to the offspring produced by that actual mating.
To explain.... to qualify as inbred, a dog has to have common ancestors on both sides of the pedigree. If the father of the FxD mating occurs only on the one side of your dog's pedigree then it doesn't contribute to your dog's inbreeding. If there are no common ancestors at all on both sides, then he isn't inbred at all.
I should point out that this is based on a pedigree as is usually given to owners ie confined to four or five generations. In theory all pedigree dogs are inbred (linebred) to some extent as there will always be common ancestors if you go back far enough.