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Related Experiment Videos

Animal breeding and disease.

Frank W Nicholas1

  • 1Reprogen, Faculty of Veterinary Science, University of Sydney, Sydney, New South Wales 2006, Australia. frankn@vetsci.usyd.edu.au

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|July 29, 2005
PubMed
Summary

Identifying causative genes for single-locus disorders in domestic animals aids in developing DNA tests. This research advances genetic disease control and selective breeding strategies for improved animal health and productivity.

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Area of Science:

  • Animal genetics
  • Genomics
  • Veterinary medicine

Background:

  • Single-locus disorders in domesticated animals were early Mendelian traits studied using linkage maps.
  • Over 100 disorders now have identified causative genes and available DNA tests.
  • Intellectual property concerns sometimes limit the publication of DNA test discoveries.

Purpose of the Study:

  • To review the identification of causative genes for single-locus disorders in domestic animals.
  • To discuss the application of genetic mapping and comparative genomics in identifying disease-causing genes.
  • To highlight the development and implications of DNA tests for animal disorders and resistance to pathogens.

Main Methods:

  • Utilizing linkage maps and comparative genomics to pinpoint causative genes.
  • Documenting identified molecular lesions for over 100 single-locus disorders.
  • Exploring genetic variation for resistance to pathogens and parasites.

Main Results:

  • More than 100 single-locus disorders in domestic animals have identified causative genes, enabling DNA testing.
  • DNA tests offer a means to identify genetic predispositions and select for desirable traits.
  • Research into DNA markers for disease resistance is ongoing, with early successes in scrapie control.

Conclusions:

  • The identification of causative genes has significantly advanced the diagnosis and management of genetic disorders in animals.
  • DNA testing and marker-assisted selection are crucial tools for improving animal health and breeding programs.
  • Continued research into genetic resistance holds promise for future disease control strategies in livestock.

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