Epizootics of Salmonella infection in poultry may be the result of modern selective breeding practices

P. R. Hunter*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This paper discussess the hypothesis that a major factor in the epizootics of Salmonella infection in poultry is a declining host genetic diversity. A computer model is described which is based on models that have been previously used to investigate host-pathogen coevolution in cereal crops. It is shown that, as host genetic diversity declines, parasite diversity also declines to a lower equilibrium level. With a highly diverse host, parasite numbers decline to zero. With a homogeneous host population, after an initial decline, there is a rapid increase in parasite numbers, due to the selection of a particularly well adapted parasite strain. This simple computer simulation is used as the basis for a discussion of the literature supporting the suggestion that a major factor in the epizootic of Salmonella in poultry is related to the low genetic diversity of commercial poultry flocks.

Original languageEnglish
Pages (from-to)851-855
Number of pages5
JournalEuropean Journal of Epidemiology
Volume8
Issue number6
DOIs
Publication statusPublished - Nov 1992
Externally publishedYes

Keywords

  • Co-evolution
  • Computer modelling
  • Poultry
  • Salmonella
  • Sex

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