Study of PRRSV in British Pig Herds
Author Information
Author(s): Charlotte M Evans, Graham F Medley, Laura E Green
Primary Institution: Department of Biological Sciences, University of Warwick
Hypothesis
What farm characteristics are associated with differences in PRRSV seroprevalence among British pig herds?
Conclusion
PRRSV infection varies significantly across farms, with smaller herds more likely to experience fadeout of the virus.
Supporting Evidence
- 34% of herds were seronegative, while 40% were seropositive.
- Herds with fewer than 250 sows were more likely to be seronegative.
- Distance to the nearest pig herd affected seroprevalence.
Takeaway
Some pig farms have more sick pigs than others because of how many pigs they have and how they manage them.
Methodology
A cross-sectional study tested 50 pigs from each of 103 herds for PRRSV antibodies using ELISA.
Potential Biases
Potential bias from self-reported data from farmers and veterinarians.
Limitations
The study is cross-sectional, which limits causal inferences.
Participant Demographics
103 pig herds from England, Wales, and Scotland.
Statistical Information
P-Value
< 0.05
Confidence Interval
95% CI 1.46, 10.19
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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