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Page 7 of articles about PRRS

Effect of litter aggregation and pooling on detection of PRRSv in piglet processing fluids

Sampling technique validated to monitor PRRSV-2 using serosanguinous exudate or processing fluids (PFs) from tissues obtained during tail docking and castration provides a general framework to interpret PRRSV-2 surveillance program results more accurately.

Graphic 1: Immune system response of a sow infected by PRRS virus (López and Osorio, 2004).

4

How do I know if my replacement gilts are really protected against PRRS?

Which tests should be performed considering their limitations, and what management practices to use to increase security.

1

Comparative evaluation of immune responses of swine in PRRS-stable and unstable herds

The aim of this work was to compare the profile and time-course of humoral and cell-mediated immunity in stable and unstable herds, respectively.

Example of the measurement of PRRSV-specific interferon gamma (IFN-γ) secreting cells by enzyme-linked immunospot (ELISPOT) assay using a 96-well plate.

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Diagnostic techniques: ¿Can the level of protection against PRRS be measured?

The high genetic diversity of the virus is not only complicating laboratory tests but also the estimation of the level of protection of pigs against PRRSV.

HealthPress releases

Winners of the 2019 European PRRS Research Award announced

In 2019, Boehringer Ingelheim has sponsored the annual European PRRS Research Award for the sixth time already.

Figure 1. Illustration of system installation. Devices were installed on the wall to monitor individual rooms (left), and beacons were worn individually by farm employees (right).

2

The use of technology in swine farms to help directing PRRS control and elimination efforts

An example on how technology can be implemented in a farm for evaluation of biosecurity compliance using production parameters.

1

Processing fluids and serum samples to characterize PRRSv dynamics in 3 day-old pigs

Processing fluids (PF) constitute a useful sample to detect PRRSV infections at processing. Current practice to bleed 30 pigs could be underestimating PRRSV prevalence in the herd.

Biosecurity and transboundary animal diseases: Council conclusions

The conclusions highlight the risks posed by the human factor and the role of communication and awareness campaigns in mitigating those risks.

Performance of pigs raised in antibiotic-free or conventional production systems following challenge with PRRSV

In a PRRSV-endemic setting involving bacterial co-infections, an ABF production strategy may leave pigs at considerable risk of exposure to severe clinical disease.

Genetics-ReproductionPress releases

Genus: Strategic porcine collaboration in China

The collaboration, with Beijing Capital Agribusiness Co. Ltd is to research, develop, register and market elite pigs in China that are resistant to PRRS.

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Genetics-ReproductionPress releases

TN Tempo copes better with PRRS

Results from this trial highlight the exceptional attributes of TN Tempo-sired pigs that are “bred for toughness”.

The role of international trade and travel in the transboundary spread of pig diseases

As globalization increases the interconnectedness between nations, economies, and industries, the introduction of diseases will continue to remain a prominent threat to the livestock sector and the trade of animals and animal products, as well as the livelihoods of farmers, food security and public health.

Figure 1: PRRS time-to-stability observed according to the season when the outbreak occurred. Dashed line represents the overall mean value (43.9 weeks). Each box represents 50% of the data (percentiles 25-75) and the black line within the box represents the median (percentile 50), so half of the outbreaks had a TTS above this line and the other half below this line for each season.

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PRRS time-to-stability variability in Midwestern US sow herds

Do outbreaks in the same farm have a similar time-to-stability? What factors can affect time-to-stability?

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Facilities-Equipment Abstract

Modelling contamination of trucks used in the shipment of pigs infected with PRRS

Under current biosecurity practices, a substantial risk exists for the spread of PRRS virus due to truck sharing.

HealthPress releases

Thermo Fisher Scientific launches new generation PRRSV molecular diagnostic kit in swine

VetMAX PRRSV EU & NA 2.0 Kit’s advanced design better detects and differentiates fast-mutating virus strains.

Figure 1. Number of weekly cases (green dots) and exponentially weighted moving average (EWMA)(blue line) of the proportion of farms at risk participating in the MSHMP from 2009 to 2018. The epidemic threshold (red line) is calculated every two years and corresponds to the upper confidence interval of the percentage of outbreaks happening in the low risk season (Summer). The dates in the black boxes indicate when the EWMA curve crosses the epidemic threshold.

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Porcine Reproductive and Respiratory Syndrome break recurrence

71% of the farms reporting a PRRS break today will report a break within the following two years. What makes them more susceptible?