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Porcilis PRRS case report - UK
A case report from the UK showed how vaccination with Porcilis PRRS reduced the negative effects of PRRS virus infections and improved the performance of the pigs.
The age at which pigs were infected with PRRSV was determined by a cross sectional serological profile.
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A serological profile to determine the age at which pigs are infected with PRRSV.
From December 2000 all pigs were vaccinated with Porcilis PRRS 4 days after weaning. The piglets were also vaccinated against Mycoplasma before weaning.
Performance results for growth rate and mortality
| | Pre PRRS vaccination | Post PRRS vaccination |
|---|
| Nov-99 | May-00 | Nov-00 | May-01* | Nov-01* |
|---|
| Growth Rate (g/d) | 668 | 656 | 623 | 668 | 672 |
| Mortality/cull (%) | 5.1 | 4.7 | 6.1 | 4.1 | 4.1 |
* Figures including 5 months of vaccinated pigs
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Comparison of mortality rates for November 2000 (pre-vaccination) to November 2001 (post-vaccination)
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Comparison of average daily growth rates for November 2000 (pre-vaccination) to November 2001 (post-vaccination)
Vaccination with Porcilis PRRS resulted in:
- 2% reduction of mortality
- An overall increase in the average daily growth rate by 49 g per pig per day
- Vaccinated pigs reached slaughter weight 10 days earlier than unvaccinated pigs
- Less medication needed
- Increased uniformity of the vaccinated pigs compared to the unvaccinated pigs
It was concluded that vaccination with Porcilis PRRS reduced the negative effects of PRRS virus infections and improved the performance of the pigs.
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