A sociobiological origin of pregnancy failure in domestic dogs

BARTOŠ, Luděk, BARTOŠOVÁ, Jitka, CHALOUPKOVÁ, Helena, DUŠEK, Adam, HRADECKÁ, Lenka a SVOBODOVÁ, Ivona. A sociobiological origin of pregnancy failure in domestic dogs. Scientific Reports , 2016, 6, 22188. ISSN 2045-2322.
Kateg. publikaceVědecké publikace impaktované
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Among domestic dog breeders it is common practice to transfer a domestic dog bitch out of her home environment for mating, bringing her back after the mating. If the home environment contains a male, who is not the father of the foetuses, there is a potential risk of future infanticide. We collected 621 records on mating of 249 healthy bitches of 11 breed-types. The highest proportion of successful pregnancies following mating occurred in bitches mated within their home pack and remaining there. Bitches mated elsewhere and then returned to a home containing at least one male had substantially lower incidence of maintained pregnancy in comparison with bitches mated by a home male. After returning home, housing affected strongly the frequency of pregnancy success. Bitches mated elsewhere but released into a home pack containing a home male were four times more likely to maintain pregnancy than bitches which were housed individually after returning home. Suppression of pregnancy in situations where a bitch is unable to confuse a home male about parentage may be seen as an adaptation to avoid any seemingly unavoidable future loss of her progeny to infanticide after birth and thus to save energy.

ProjektRozvoj hospodářských zvířat v multifunkčním zemědělství