Page 8 of articles about PRRS

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.

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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”.

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HealthNews

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.

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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.

HealthArticle

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.

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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.

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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.

HealthArticle

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?

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Roles of the microbiome: providing a protective intestinal barrier, digesting and metabolizing nutrients, and regulating immunity.

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HealthArticle

Fecal transplantation and prevention of porcine circovirus associated disease

The gut microbiome provides an alternative tool for control and prevention of diseases.

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HealthAbstract

Vaccination of 1-day-old pigs with a PRRSV modified live attenuated virus vaccine is able to overcome maternal immunity

The efficacy of the attenuated PRRSV-1 vaccine in 1-day-old pigs seropositive to PRRSV prior to a PRRSV-1 challenge was demonstrated by improvement of clinical, virological and immunological variables.

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Figure 1. Threshold cycle (Ct) is the first number of the real time PCR cycle when fluorescence is detected indicating the presence of the given pathogen in the sample. The lower the Ct value, the higher the amount of the pathogen in the tested sample. Very high Ct values have to be interpreted with care as they can originate from spontaneous degradation of a TaqMan probe in the very late cycles, despite the lack of target DNA in the sample.

HealthArticle

PCR limitations in PRRS diagnostics

PCR can detect the virus in virtually any material but, does it mean the sample contains the virus and it is infectious? Is any PCR test valid for any strain?

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Picture 1. Using ropes for sampling oral fluids.

HealthArticle

PRRSV surveillance. How could we track the progress towards PRRS control in our farms?

How can we monitor our program? Which pigs should be sampled? How many? How often should we sequence the virus/es present in our farms?

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Picture 1. Gilt unit in North America. Picture courtesy of Dr. Maria Jose Clavijo

HealthArticle

Gilt acclimation to PRRS virus (2/2). Steps to meet the challenge

Four veterinarians talk about gilt acclimation: programs they put in place, how the immune status is measured and special management scenarios for introducing those gilts into the main herd.

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Pic1. On-site gilt development unit. Picture courtesy of Dr. Maria Jose Clavijo.

HealthArticle

Gilt acclimation to PRRS virus (1/2). Are there different approaches for different regions?

What is the preferred exposure method?, and the best status of the incoming gilts?, should they be raised on-farm or purchased?, … Veterinary practitioners from Germany, North America, China, and Spain share their opinions.

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Weaning many piglets is not easy, and neither it is to achieve that the great majority of them have a good quality and weight. Nevertheless it is essential to be able to reduce the use of medications in the nursery. Photo by: Antonio Caballero.

HealthArticle

Are the nurseries becoming complicated? (1/3)

In recent years, pig production has been subject to several changes that have forced farmers to adapt. Some of these changes have a direct impact on the nursery.

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HealthNews

UK: Highest recorded PRRS diagnosis in first quarter

The first quarter of 2018 saw the highest ever recorded diagnostic rate of PRRS, according to APHA.