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Reduction of traits for genetic evaluation of linear described traits in the Old Kladruber horse

Author

Listed:
  • L. Vostrý

    (Faculty of Agrobiology, Food and Natural resources, Czech University of Life Sciences Prague, Prague, Czech Republic
    Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • J. Přibyl

    (Faculty of Agrobiology, Food and Natural resources, Czech University of Life Sciences Prague, Prague, Czech Republic
    Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • P. Šimeček

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

Abstract

The estimated genetic parameters were used for selection of important conformation traits and reduction in the number of the described characteristics. For reduction in the number of described traits from the original 36 to 24, the traits were selected according to: measure of genetic similarity (cluster analysis), measure of uncertainty multidimensional quantity, value of the variance of aggregate genotype, value of the variance of selection index and correlation of trait to the first principal component of the genetic matrix. Reduction in the number of the described traits was based on the value of heritability coefficient and genetic correlations matrix. The reliabilities of selection indexes were estimated between 0.41 and 0.53. Among the three multivariate analysis methods evaluated in this study, the variance of selection index had the highest reliabilities of selection indexes. The estimation of selection index variance which omitted traits with low heritability coefficient and high genetic correlation was the most suitable for the traits selection. This procedure would enable the breeders to reduce field costs (e.g. time, labour) required for obtaining the genetic parameter estimates necessary for a specific breeding programme.

Suggested Citation

  • L. Vostrý & J. Přibyl & P. Šimeček, 2012. "Reduction of traits for genetic evaluation of linear described traits in the Old Kladruber horse," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 57(4), pages 160-170.
    • Handle: RePEc:caa:jnlcjs:v:57:y:2012:i:4:id:5891-cjas
    DOI: 10.17221/5891-CJAS
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    References listed on IDEAS

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    1. Z. Veselá & J. Přibyl & P. Šafus & L. Vostrý & K. Šeba & L. Štolc, 2005. "Breeding value for type traits in beef cattle in theCzech Republic," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 50(9), pages 385-393.
    2. J. Bouška & M. Štípková & P. Pytloun & J. Pytloun & M. Kubešová, 2008. "Relationships among body condition score, milk yield and sires' breeding value for beef production efficiency in Czech Fleckvieh cattle," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(11), pages 453-461.
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