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Genetic relationship between management units of Czech dam pig breeds based on various types of data and pedigree information

Author

Listed:
  • E. Krupa

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • E. Žáková

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • Z. Krupová

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • R. Kasarda

    (Slovak University of Agriculture, Nitra, Slovak Republic)

  • A. Svitáková

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic)

Abstract

Knowledge of genetic relationship is an important control mechanism for animal performance-testing schemes. Genetic relationship between and within pig herds was calculated for two dam breeds, Czech Large White (CLW) and Czech Landrace (CLA). The impacts of different field data types (production and reproduction) and various numbers of generations within the pedigrees on genetic relationship were studied. The degree of genetic relationship between analyzed herds was generally low. It ranged from 1.01% (for CLW based on reproduction data and considering three generations of ancestors within the pedigree) to 2.57% (for CLA based on production data with seven generations of ancestors in the pedigree). In contrast, relationship within herds was high and ranged from 16.62% to 44.69% (when three and seven generations within the pedigree were taken into account, respectively), both for production data of the CLA breed. When considering the type of data, an impact on the observed genetic relationship between and within herds was found. Slightly higher genetic relationship between herds was determined in both breeds when using production data (1.64%) compared to reproduction data (1.40%). In contrast, a negligible influence between herds on genetic relationship was found from the number of ancestors' generations included into the calculations. That was especially so after five or six generations. Our results show that the relationship between herds is population specific and, consequently, must be analyzed on a case-by-case basis. Knowledge of genetic relationship between and within herds should be taken into account in regard to the complexity of genetic evaluation.

Suggested Citation

  • E. Krupa & E. Žáková & Z. Krupová & R. Kasarda & A. Svitáková, 2016. "Genetic relationship between management units of Czech dam pig breeds based on various types of data and pedigree information," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 61(2), pages 91-97.
    • Handle: RePEc:caa:jnlcjs:v:61:y:2016:i:2:id:8732-cjas
    DOI: 10.17221/8732-CJAS
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    References listed on IDEAS

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    1. J. Wolf & E. Žáková & E. Groeneveld, 2005. "Genetic parameters for a joint genetic evaluation of production and reproduction traits in pigs," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 50(3), pages 96-103.
    2. E. Krupa & J. Wolf, 2013. "Simultaneous estimation of genetic parameters for production and litter size traits in Czech Large White and Czech Landrace pigs," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 58(9), pages 429-436.
    3. J. Wolf & J. Smital, 2009. "Effects in genetic evaluation for semen traits in Czech Large White and Czech Landrace boars," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(8), pages 349-358.
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