PRRS hot topics
We summarize our discussion with Dr. Hans Nauwynck, professor at Ghent University, related to several PRRS hot topics: autovaccines, regional control and elimination, boar studs, and replacement gilts PRRS status.
PRRS control or elimination in Danish herds – who, how and when
The three most important things in respect to a PRRSV control program are: 1) planning; 2) planning and 3) planning; and the success of the program depends also on three important factors: 1) people; 2) people and 3) people!
PRRS: future lines of research
Dr. Nauwynck reviews with us the main gaps in PRRSV research and how he envisions the future of this disease regarding diagnostic technologies and vaccination strategies.
How can I efficiently monitor PRRSV circulation on the farm?
Thinking about successful monitoring, one should keep in mind the objectives, the production phase, and the type of animal to be tested.
PRRS diagnostics: Matching your strategies with your scenarios
This article will review the different PRRS diagnostic options based on the different scenarios for which we complete PRRS sampling in the field.
PRRS - Why can't I achieve long-term stability on my farm?
Its high survivability in the environment, a long infective period, limited cross-protection, strains with different pathogenicity, and lateral infections make stabilization difficult.
Using tip tongue fluids to monitor PRRS virus
This protocol allows for PRRS monitoring at all stages of pig production with good results, little technical difficulty, and a lower cost.
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.
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.
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.
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?
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?
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?
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?
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.
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.
How is PRRS perceived across the world? How is it managed?
Key swine veterinary practitioners describe the “PRRS-ception” of this disease in the most important pork producing regions.
PRRSV sequencing and its use in practice
It is very important to analyze new PRRSV sequences against a broad reference set representing the farm, the system and the region, as well as the sequences of available commercial vaccines (this will make it possible to differentiate between field and vaccine strains).
The Dr. Morrison Swine Health Monitoring Project
Dr. Robert Morrison created the Swine Health Monitoring Project in 2011 and, after his tragic loss, in May 2017 the program was renamed.
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