Recent breeding history of dog breeds in Sweden: modest ratesof inbreeding, extensive loss of genetic diversity and lack ofcorrelation between inbreeding and health
2014 (English)In: Journal of Animal Breeding and Genetics, ISSN 0931-2668, E-ISSN 1439-0388, Vol. 131, no 2, 153-162 p.Article in journal (Refereed) Published
One problem in modern dogs is a high occurrence of physical diseases,defects and disorders. Many breeds exhibit physical problems that affectindividual dogs throughout life. A potential cause of these problems isinbreeding that is known to reduce the viability of individuals. We investigatedthe possible correlation between recent inbreeding and health problemsin dogs and used studbook data from 26 breeds provided by theSwedish Kennel Club for this purpose. The pedigrees date back to themid-20th century and comprise 5–10 generations and 1 000–50 000 individualsper pedigree over our study period of 1980–2010. We comparedlevels of inbreeding and loss of genetic variation measured in relation tothe number of founding animals during this period in the investigated dogbreeds that we classified as ‘healthy’ (11 breeds) or ‘unhealthy’ (15) basedon statistics on the extent of veterinary care obtained from Sweden’sfour largest insurance companies for pets. We found extensive loss ofgenetic variation and moderate levels of recent inbreeding in all breedsexamined, but no strong indication of a difference in these parametersbetween healthy versus unhealthy breeds over this period. Thus, recentbreeding history with respect to rate of inbreeding does not appear to be amain cause of poor health in the investigated dog breeds in Sweden. Weidentified both strengths and weaknesses of the dog pedigree data importantto consider in future work of monitoring and conserving geneticdiversity of dog breeds.
Place, publisher, year, edition, pages
2014. Vol. 131, no 2, 153-162 p.
animal genetic resources, conservation genetics, domestic gene pools, pedigree analysis
IdentifiersURN: urn:nbn:se:su:diva-100600DOI: 10.1111/jbg.12060ISI: 000332780900009OAI: oai:DiVA.org:su-100600DiVA: diva2:694827