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Page 12 of articles about PRRS

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Pigs that are resistant to PRRSv developed at University of Missouri

Porcine Reproductive and Respiratory Syndrome (PRRS) virus was first detected in the U.S. in 1987. Pigs that contract the disease have extreme difficulty reproducing, don’t gain weight and have a high mortality rate. The disease costs North American farmers more than $660 million annually. Now, a team of researchers from the University of Missouri, Kansas State University, and Genus plc have bred pigs that are not harmed by the disease.

Research develops breakthrough technology to address PRRS

The discovery of PRRS-resistant pigs could significantly improve animal well-being and save hundreds of millions of dollars each year.

Hog and Pig sales as percentual agriculture sales, by County, 2012

2

Stochastic model of PRRSV control strategies on a swine farm in the United States

After 24 years of experience we still don't have a control plan agreed upon and accepted by all our technical community. Why?

Measurement of time-to-virus-negative-piglets interval in PRRSv positive sow herds

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Measurement of time-to-virus-negative-piglets interval in PRRSv positive sow herds

The accuracy and security provided by the combination of samples of weaned pigs and piglets at birth, either stillborn or live piglets, help us make a decision that will be crucial in any eradication plan.

Development in the number of PRRSV positive breeding herds (nucleus and multiplying herds) and in the number of positive production herds in the Danish SPF system where all herds have a PRRSV declaration

PRRS control and eradication plans in Europe

Only a few EU countries are discussing national eradication as a possibility.

Classifying swine herds by PRRS virus status

Classifying swine herds by PRRSv status

The classification system for PRRSV status of herds is based upon a set of definitions reflecting the biology and ecology of PRRSV.

Lungs of a piglet exterminated 14 days PI, inoculated with higly pathogenic Type I subtype 3 strain Lena

1

PRRSV pathology in the lungs

The tissue damage is the consequence of direct apoptosis (and necrosis) of alveolar macrophage and their neighboring cells due to the release of apoptotigenic cytokines, reactive oxygen species, and nitric oxide.

Efficacy of combined vaccination against Mycoplasma hyopneumoniae and porcine reproductive and respiratory syndrome virus in dually infected pigs

In conclusion, combined vaccination against both Mhp and PRRSV efficiently pooled the efficacy of each single PRRSV and Mhp vaccination and could be an interesting tool to control PRDC in European swine production.

Boehringer Ingelheim Animal Health launches two new swine vaccines in Europe

New vaccines Ingelvac PRRSFLEX® EU for piglets and ReproCyc® PRRS EU for sows offer sustainable control of Porcine Reproductive and Respiratory Syndrome (PRRS).

Cambodia reported the presence of PRRS

The OIE has reported two outbreaks of PRRS in Cambodia, located in Chi Kraeng and Soutr Nikom (Siem Reap), with a total of 33,680 susceptible animals of which 2,661 cases and 997 deaths.

ELISA

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Challenges in diagnosis of PRRSV

Currently, no single RT-PCR assay could be recommended as a universal method allowing for detection of all PRRSV strains with optimal sensitivity.

Impact of the presence of swine influenza A virus and PRRS virus in post-weaning mortality

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Impact of an early exposure to SIV and PRRSv in post-weaning mortality

Infection with swine influenza virus and porcine reproductive and respiratory syndrome during the suckling period was associated with an increase in post-weaning mortality (more limited in the case of SIV and of larger magnitude for PRRSV).

Association of the presence of IAV and PRRSV in sow farms with post-weaning mortality

Our results suggest that infection with IAV or PRRSV in the pre-weaning period is associated with an increase in post-weaning mortality.

Reproductive failure caused by PRRSV

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Control of reproductive PRRS outbreak by type 1 PRRS vaccine

In Korea, it is common to vaccinate sows as a whole-herd mass vaccination program, where all sows are vaccinated quarterly with a type 2 PRRSV vaccine. Therefore, it is recommended to vaccinate breeding females quarterly with additional type 1 PRRSV vaccine to control type 1 PRRSV infection.

Estimated annual cost of PRRS in each country per breeding sow in the inventory

PRRS cost for the European swine industry

The estimated cost of PRRS for European pig producers is 1,5b € every year.

Probability of a farm to remain PRRSV-negative

Evaluating the duration of a swine breeding herd PRRSV-free status and its relationship with measured risk

The article suggests measuring external risks in order to compare swine farms based on a numerical figure, and thus initiate corrective measures to improve and numerically verify the improvements achieved.