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Factors affecting reproductive performance in the Swedish Bernese mountain dog by Eva Axnér; Linda Sofia Rasmus; Toril Melangen is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract ## Background Good reproductive performance is fundamental for the development of a breed. Previous studies have indicated that the Bernese mountain dog has a relatively high prevalence of reproductive problems such as a high prevalence of dystocia and a low mean litter size. When reproduction is impaired, selection for other traits, including improved health, will become more difficult. The aim of this study was therefore to evaluate reproductive data and factors affecting these in the Bernese mountain dog. Data collected by the Swedish Sennenhund Club during the years 2010–2020 were evaluated by statistical analyses. ## Results Information from 1287 reported matings were included with a total of 614 bitches and 399 sires. For five reported matings that did not result in a litter, there was no information about the male identity. The reported matings resulted in 798 litters (62% whelping rate) from 502 bitches and 314 males. Paternal and maternal age had a significant effect on whelping rate with a negative effect of increasing age (P < 0.01). Median litter size at birth (LSB) was 6.00 (range 0–14) and was significantly affected by both paternal (P = 0.021) and materna

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Author

Eva Axnér; Linda Sofia Rasmus; Toril Melangen

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)