Czech J. Anim. Sci., 2020, 65(6):224-231 | DOI: 10.17221/80/2020-CJAS

Monitoring of genetic diversity in autochthonous Czech poultry breeds assessed by genealogical dataOriginal Paper

Luboš Vostrý1,2, Hana Vostrá-Vydrová1,2, Nina Moravčíková3, Barbora Hofmanová1, Jana Rychtářová2, Karolína Machová1, Michaela Brzáková1,2, Radovan Kasarda3
1 Department of Genetics and Breeding, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
2 Institute of Animal Science, Prague-Uhříněves, Czech Republic
3 Department of Animal Genetics and Breeding Biology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic

Czech local poultry breeds face high risks of extinction. Because these populations are closed, they are more likely to lose genetic diversity. The aim of this analysis was to determine the loss of genetic diversity in three Czech autochthonous poultry breeds. Pedigree data from a total of 1 932 Czech Gold Speckled Hens, 325 Czech White Geese and 111 Czech Crested Geese registered in studbooks between 2000 and 2018 were evaluated. Data were analysed to determine the major factors that affect the genetic variability of these breeds. The average numbers of equivalent complete generations ranged from 2.53 to 4.82. The effective numbers of founders were from 29 to 59, representing from 43% to 62% of the total number of founders. The effective number of ancestors was estimated in the range of 21 to 41. The average inbreeding coefficient and relatedness coefficient (in parentheses) for the reference populations were 2.0% (6.5%), 1.9% (4.9%) and 2.1% (9.3%), respectively. The results showed that the effective population size derived from the rate of inbreeding ranged from 46 to 108 and if derived from the rate of coancestry it ranged from 35 to 74. With regard to these results, the analysed breeds showed a high probability of allele loss and consequent loss of genetic diversity.

Keywords: inbreeding; structure of population; chicken; goose

Published: June 30, 2020  Show citation

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Vostrý L, Vostrá-Vydrová H, Moravčíková N, Hofmanová B, Rychtářová J, Machová K, et al.. Monitoring of genetic diversity in autochthonous Czech poultry breeds assessed by genealogical data. Czech J. Anim. Sci. 2020;65(6):224-231. doi: 10.17221/80/2020-CJAS.
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