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Home / Equine Research Bank / Anim Genet / Genetic diversity in German draught horse breeds compared wi...
Animal genetics2004; 35(4); 270-277; doi: 10.1111/j.1365-2052.2004.01166.x

Genetic diversity in German draught horse breeds compared with a group of primitive, riding and wild horses by means of microsatellite DNA markers.

Abstract: We compared the genetic diversity and distance among six German draught horse breeds to wild (Przewalski's Horse), primitive (Icelandic Horse, Sorraia Horse, Exmoor Pony) or riding horse breeds (Hanoverian Warmblood, Arabian) by means of genotypic information from 30 microsatellite loci. The draught horse breeds included the South German Coldblood, Rhenish German Draught Horse, Mecklenburg Coldblood, Saxon Thuringa Coldblood, Black Forest Horse and Schleswig Draught Horse. Despite large differences in population sizes, the average observed heterozygosity (H(o)) differed little among the heavy horse breeds (0.64-0.71), but was considerably lower than in the Hanoverian Warmblood or Icelandic Horse population. The mean number of alleles (N(A)) decreased more markedly with declining population sizes of German draught horse breeds (5.2-6.3) but did not reach the values of Hanoverian Warmblood (N(A) = 6.7). The coefficient of differentiation among the heavy horse breeds showed 11.6% of the diversity between the heavy horse breeds, as opposed to 21.2% between the other horse populations. The differentiation test revealed highly significant genetic differences among all draught horse breeds except the Mecklenburg and Saxon Thuringa Coldbloods. The Schleswig Draught Horse was the most distinct draught horse breed. In conclusion, the study demonstrated a clear distinction among the German draught horse breeds and even among breeds with a very short history of divergence like Rhenish German Draught Horse and its East German subpopulations Mecklenburg and Saxon Thuringa Coldblood.
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Publication Date: 2004-07-22 PubMed ID: 15265065DOI: 10.1111/j.1365-2052.2004.01166.xGoogle Scholar: Lookup
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  • Comparative Study
  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article investigates the genetic diversity across six German draught horse breeds, comparing these with wild, primitive, and riding horse breeds. The findings reveal notable genetic differences amongst the German draught horse breeds, despite similarities in population sizes.

Study Overview

  • The study looks into genetic diversity across various horse breeds, focusing on six German draught horse breeds: South German Coldblood, Rhenish German Draught Horse, Mecklenburg Coldblood, Saxon Thuringa Coldblood, Black Forest Horse, and Schleswig Draught Horse. These were compared with a group consisting of wild horse breed (Przewalski’s Horse), primitive horse breeds (Icelandic Horse, Sorraia Horse, Exmoor Pony) and riding horse breeds (Hanoverian Warmblood, Arabian).

Research Methods

  • Researchers used genotypic information derived from 30 microsatellite loci to make their comparisons. Microsatellite loci are regions of DNA that are helpful in determining genetic diversity.

Findings on Heterozygosity and Alleles

  • The study found that the average observed heterozygosity, or H(o) (a measure of genetic diversity in a population), was fairly similar among the heavy horse breeds, with values ranging from 0.64 to 0.71. However, significantly lower values were observed in the Hanoverian Warmblood or Icelandic Horse population.
  • As per the findings, the mean number of alleles (alternate forms of a gene) were also impacted by the population size; as the population size of German draught horse breeds declined, so did the mean number of alleles, although not to the extent seen in the Hanoverian Warmblood breed.

Findings on Genetic Differentiation

  • The research also calculated the coefficient of differentiation among the heavy horse breeds, with about 11.6% of diversity between the breeds. This percentage was lower when compared to the 21.2% diversity calculated between the other horse populations.
  • Significant genetic differences were identified among all draught horse breeds, with the exception of the Mecklenburg and Saxon Thuringa Coldbloods. The Schleswig Draught Horse was the most genetically distinct breed among the draught horses.

Conclusion

  • The study concluded with a clear demonstration of distinct genetic diversity across German draught horse breeds, including those with a short history of divergence like Rhenish German Draught Horse and its East German subpopulations Mecklenburg and Saxon Thuringa Coldblood.

Cite This Article

APA
Aberle KS, Hamann H, Drögemüller C, Distl O. (2004). Genetic diversity in German draught horse breeds compared with a group of primitive, riding and wild horses by means of microsatellite DNA markers. Anim Genet, 35(4), 270-277. https://doi.org/10.1111/j.1365-2052.2004.01166.x

Publication

Animal genetics
ISSN: 0268-9146
NlmUniqueID: 8605704
Country: England
Language: English
Volume: 35
Issue: 4
Pages: 270-277

Researcher Affiliations

Aberle, K S
  • Institute of Animal Breeding and Genetics, School of Veterinary Medicine Hannover, Hannover, Germany.
Hamann, H
    Drögemüller, C
      Distl, O

        MeSH Terms

        • Animals
        • Evolution, Molecular
        • Gene Frequency
        • Genetic Carrier Screening
        • Genetic Variation
        • Genetics, Population
        • Germany
        • Horses / genetics
        • Microsatellite Repeats / genetics
        • Species Specificity

        Citations

        This article has been cited 25 times.
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