Inbreeding and litter size in pedigreed dogs

J.J. Windig, M.L. Margarita, H.P. Doekes

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademic


Inbreeding may negatively affect fertility, especially when mating closely related individuals. We evaluated the frequency of these matings in Dutch pedigreed dogs between 1997 to 2018 and their effect on litter size in 15 breeds. The percentage of matings between half-cousins and closer has decreased since 1999. Litter size of individual matings tended to be significantly lower only for full sib and parent offspring matings. Inbreeding depression was only evident when analysed at the population level. In two breeds, a 1% increase in inbreeding of the dam resulted in an estimated reduction of litter size of 0.05 and 0.028 pups. These findings emphasize the importance for breeders and owners to avoid mating closely related dogs.
Original languageEnglish
Title of host publicationProceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP)
Subtitle of host publicationTechnical and species orientated innovations in animal breeding, and contribution of genetics to solving societal challenges
EditorsR.F. Veerkamp, Y. de Haas
Place of PublicationWageningen
PublisherWageningen Academic Publishers
Number of pages4
ISBN (Electronic)9789086869404
Publication statusPublished - 2022
EventWorld Congress on Genetics Applied to Livestock Production: WCGALP 2022 - Rotterdam, Netherlands
Duration: 3 Jul 20228 Jul 2022


ConferenceWorld Congress on Genetics Applied to Livestock Production: WCGALP 2022


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