bioRxiv preprint doi: https://doi.org/10.1101/2020.02.19.956045; this version posted February 19, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 1 Analysis of structure of the population, kinship 2 coefficients and inbreeding trend depending on sex, 3 type of breeding of Tatra Sheepherd dogs 4 Sweklej Edyta1¶, Horoszewicz Elżbieta1¶, Niedziółka Roman1¶* 5 1Institute of Zootechnics and Fisheries, Siedlce University of Natural Sciences and 6 Humanities, Siedlce, Poland 7 8 ¶These authors contributed equally to this work. 9 *
[email protected] 10 Elżbieta Horoszewicz ORCID – http://orcid.org/0000-0001-8877-6185 11 Roman Niedziółka ORCID – http://orcid.org/0000-0002-5531-3704 12 13 Abstract 14 The aim of the study was to analyse the structure of the population, kinship coefficients and 15 inbreeding trend taking into account the sex, breeding system: champions (CH) and non- 16 champions (nCH), breeding country: Poland (PL) and foreign country (Z) and the inbreeding 17 degree of Tatra Shepherd dogs. Out of the currently registered 587 Tatra Shepherd dogs, 18 41.9% have been qualified for breeding. In the past decade, 1961 puppies were born, which 19 corresponds to an average litter of 5.8 puppies. The breed's inbreeding rate amounted to 20 6.34%, and for a 4-generation population was 6.68%. The highest inbreeding rate was found 21 in nCH and PL groups consisting of both male and female dogs.