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.
Biosecurity in PRRSV control
What is a priority and what is not? It depends on the risks and the PRRSV status of the farm…
Use of processing fluids for PRRSV diagnostics
We propose to use the processing fluids, the liquid accumulated at the bottom of the pail when farmers collect tails and testicles during routine procedures as a sample.
Introduction of replacement gilts to PRRS-positive sow herds
A study was performed including 69 PRRS-positive sow herds with the aim of comparing the use of PRRSV MLV and quarantine facilities with the PRRSV status of replacement gilts at first insemination.
PRRSV surveillance on the breeding herd - is oral fluids from suckling piglets an alternative?
Oral fluids are practical, fast, easy, cost-effective and reliable methods for sampling pig populations, but it has not been easy or practical to obtain such samples from suckling piglets...
PRRSV control using vaccination and optimized management: three case studies
Although the use of vaccination was effective in stabilizing the sows, the results of these case studies emphasized that elimination of PRRSV from the nursery can only be accomplished if vaccination and partial depopulation/ disinfection are supported by strict implementation of all recommended management procedures, including AI/AO.
PRRS: Time to stability and time to baseline production study
The purpose of this study was to compare efficacy of LCE (load-close-expose) using attenuated PRRSV to that using live-virus exposure on breeding herds acutely infected with PRRSv.
Health and economical impact of PRRS in Northern Ireland
The economic potential lost in a unit positive to PRRS could be around 35 – 37% of net unit margin.
Transdermal devices in PRRSV immunization (2/2)
Needle-free injection technology improves the dispersion of vaccines throughout the tissue.
Transdermal devices in PRRSV immunization (1/2)
NFID administered swine vaccines can use half to a tenth of the dose required for intramuscular vaccines because of the higher antigen dispersion and contact with the antigen presenting cells found in skin.
Assessing impact of 174 PRRSv on wean to finish pig health
A method to quantify the relative economic importance of pig health status at placement by specific pathogens (PRRSv and PEDv) and to estimate the effect of a specific type of PRRSv at a specific production system is presented.
The role of gilt acclimation in the control of PRRS
The first and the most important condition at the beginning of PRRSV control program is to disrupt virus circulation in the reproductive herd.
PRRS control and eradication plans in Europe
Only a few EU countries are discussing national eradication as a possibility.
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.
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.
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.
European strains of PRRSV in Korea
Type 1 PRRSV is highly prevalent in Korean swine herds and currently reproductive failure is more important consequence of infection with type 1 PRRSV, than is respiratory diseases in growing pigs.
National PRRS eradication program in Hungary
According to the present status and the experiences obtained during the previous one and a half year, Hungary will get free of PRRS by 2020.
Welcome to 333
Connect, share, and interact with the largest community of professionals in the swine industry.
Celebrating 153651Users on 333!
Sign upAlready a member?Recommended accounts
Other - China
Other - China
Company - Ireland
Company - Spain
Company - France