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Immunogenetics

, Volume 59, Issue 8, pp 687–691 | Cite as

Low frequency of the Mx allele for viral resistance predates recent intensive selection in domestic chickens

  • Devanand Balkissoon
  • Karen Staines
  • John McCauley
  • James Wood
  • John Young
  • Jim Kaufman
  • Colin ButterEmail author
Brief Communication

Abstract

Avian influenza is a serious threat to the poultry industry and, as the potential source of a human pandemic virus, to public health. Different Mx alleles have been reported to confer resistance or susceptibility to influenza virus replication, and so knowledge of their frequencies is important when considering the potential for improvement of modern commercial flocks. We analysed a range of chicken lines and ancestral breeds for the relevant Mx codon that confers resistance or susceptibility to influenza virus replication. We confirmed the high frequency of the susceptibility allele in contemporary meat-type (broiler) birds compared to egg-laying strains and found this difference is present already in ancestral breeds. We sequenced full-length complementary DNA (cDNA) and noted additional substitutions, which may be associated with the resistance haplotypes. High frequencies of the susceptibility allele could be readily reduced by modern breeding techniques.

Keywords

Mx Interferon Innate immunity Inbred strains Selection Avian Influenza 

Notes

Acknowledgements

We thank Mr. Shaun Hammon of the Wernlas Collection (Shropshire, UK) and Mr. Michael Figgures of Honeysuckle Farm (Wiltshire, UK) for their kind cooperation with this study. We acknowledge Dr. Pete Kaiser (I.A.H., Compton, UK) and Dr. Paul Hocking (Roslin Inst., Midlothian, UK) for helpful discussion. This work was supported by the Cambridge Infectious Diseases Consortium (C.I.D.C.), University of Cambridge, UK and the Institute for Animal Health, Compton, UK.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Devanand Balkissoon
    • 1
    • 3
  • Karen Staines
    • 1
  • John McCauley
    • 2
  • James Wood
    • 3
  • John Young
    • 1
  • Jim Kaufman
    • 1
  • Colin Butter
    • 1
    Email author
  1. 1.Institute for Animal Health, ComptonNewburyUK
  2. 2.The National Institute for Medical ResearchLondonUK
  3. 3.Cambridge Infectious Diseases Consortium (CIDC), Department of Veterinary MedicineUniversity of CambridgeCambridgeUK

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