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Allele frequencies in loci controlling coat colour in Polish Coldblood horses

Author

Listed:
  • Anna Stachurska

    (Department of Horse Breeding and Use, University of Life Sciences in Lublin, Lublin, Poland)

  • Antoni Brodacki

    (Institute of Biological Basis of Animal Production, University of Life Sciences in Lublin, Lublin, Poland)

  • Marta Liss

    (Department of Horse Breeding and Use, University of Life Sciences in Lublin, Lublin, Poland)

Abstract

The objective of this study was to estimate the frequencies of alleles which produce coat colour in Polish Coldblood horse population, and to verify the hypothesis that coat colour is not considered in its selection. The analysis included 35 928 horses and their parents having been registered in the studbook over a half-century. Allele frequencies in Agouti (A), Extension (E), Dun (D), Roan (Rn), and Grey (G) loci, in parental and offspring generations, were estimated according to test matings and the square root of recessive phenotype frequency. The population structure is in Hardy-Weinberg equilibrium only at E locus and coat colour is regarded by breeders. Black horses are favoured. Higher E locus homozygosity in blacks than in bays makes it easier to obtain black foals. Dun-diluted, roan and grey coat colours are undesirable and the population has come to consist almost uniformly of basic coat colours. These results show the importance of studies on population genetic structure, which despite no formal criteria for breeding for colour, can considerably change through generations.

Suggested Citation

  • Anna Stachurska & Antoni Brodacki & Marta Liss, 2018. "Allele frequencies in loci controlling coat colour in Polish Coldblood horses," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 63(11), pages 462-472.
    • Handle: RePEc:caa:jnlcjs:v:63:y:2018:i:11:id:107-2018-cjas
    DOI: 10.17221/107/2018-CJAS
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    References listed on IDEAS

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    1. A. Stachurska & A. Nogaj & A. Brodacki & J. Nogaj & J. Batkowska, 2014. "Genetic distances between horse breeds in Poland estimated according to blood protein polymorphism," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 59(6), pages 257-267.
    2. A. Stachurska & A. Brodacki & J. Grabowska, 2012. "Allele frequency in loci which control coat colours in Hucul horse population," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 57(4), pages 178-186.
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