Epizootics of Salmonella infection in poultry may be the result of modern selective breeding practices
- P. R. Hunter
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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.
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- Epizootics of Salmonella infection in poultry may be the result of modern selective breeding practices
European Journal of Epidemiology
Volume 8, Issue 6 , pp 851-855
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- Online ISSN
- Kluwer Academic Publishers
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- Computer modelling
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- P. R. Hunter (1)
- Author Affiliations
- 1. Public Health Laboratory, Countess of Chester Hospital, Liverpool Road, CH2 IBA, Chester, UK