Swine Health - PRRS
ub-typing of PRRSV isolates by means of measurement of cross-neutralization reactions
November 3, 2006By Fernando Osorio
One of the major obstacles for PRRSV control is the significant variability of this virus in the field. Such variability of PRRSV is expressed at the level of the genetic information of the strains (...
Swine Health - PRRS
Analyzing PRRS status of piglets on multiple farms after serum exposure to validate production of negative piglets
November 3, 2006By Jeff Feder
Based on these results, serum exposure can be an effective way of stabilizing a sow herd and weaning negative piglets on a consistent basis in large, commercial sow units faced with a variety of PRRS...
Swine Health - General Disease
Investigating the pathogenicity of pestiviruses or pesti-like viruses isolated from recent swine epidemics
November 1, 2006By Kelly Lager
Bovine viral diarrhea virus (BVDV) is a virus usually found in domestic and wild ruminants. However, a BVDV was recently isolated from a case of severe mortality (about 55%) in finishing swine. This...
Swine Health - PRRS
Development and Optimization of a Blocking ELISA for Type 1 and Type 2 Strains of Porcine Reproductive and Respiratory Syndrome Virus
November 1, 2006By Christopher Chase
The NPB Initiative recognizes that the most effective way to control PRRS is to eliminate the virus from domestic swine herds. Control and elimination strategies should include diagnostic tools that...
Swine Health - General Disease
Assessment of the infectivity of asymptomatic carriers, to understand the dynamics of Mycoplasma hyopneumoniae infection in reproductive herds
October 31, 2006By Carlos Pijoan
Designing disease control and/or eradication protocols depends mostly in how much we know about the pathogen we want to eliminate. Regarding Mycoplasma hyopneumoniae, the causative agent of Enzootic...
Swine Health - PRRS
Accurate ELISA test development: Evaluation of cysteine protease domain of non-structural protein 2 as a potential antigen
October 31, 2006By Ying Fang
Currently, in the absence of effective vaccines and therapeutic drugs, one of the key approaches to achieve the “National PRRS Elimination” is to identify PRRSV infected pigs, so such...
Swine Health - PRRS
An Improved Method for PRRSV Surveillance and Monitoring
October 11, 2006By Jeffrey Zimmerman
Oral fluids are inexpensive to collect. Each pen sample requires a length of cotton rope, a plastic bag, and a snap-cap plastic tube. Labor costs include the time required to place and recover the...
Swine Health - PRRS
The role of downtime in pathogen contamination of swine facilities
October 9, 2006By Dr. Sandra Amass
The effectiveness of decontamination procedures and downtimes in reducing PRRSV and bacterial contamination of wean-finish and nursery rooms of a commercial swine farm was tested. The herd was...
Swine Health - PRRS
Modeling PRRS virus aerosol transmission within and between farms
October 1, 2006By Jeffrey Zimmerman
The objective of this research was to try to understand two major stages of aerosol transmission: 1) how much PRRSV is aerosolized by pigs and 2) how long does airborne PRRSV remain infectious. How...
Swine Health - PRRS
Evaluation of sampling and testing strategies for monitoring of PRRS virus infection in boar studs
September 7, 2006By Claudia Munoz-Zanai
Monitoring of boar studs for PRRS is critical to minimize the risk of transmission to sows via contaminated semen. However, current protocols for monitoring PRRSV in boar studs are diverse, sometimes...
