Swine Health - PRRS
Physical Characterization of the PRRSV Virion
March 23, 2007By Michael Murtaugh
The research here shows that PRRSV grows in cells as a population of viruses with the same shape, the same RNA molecules, and the same protein composition. There was no evidence for multiple forms...
Swine Health - PRRS
Mechanisms of Failed Protection Against PRRS in Sow Herds
February 28, 2007By Michael Murtaugh
We have established a set of standard protocols and reagents for whole genome PRRSV sequencing and assembly. Phylogenetic comparisons amongst 10 pairs of homologous strains confirmed several regions...
Environment - Air
Partitioning between pit and wall emission streams of hydrogen sulfide, ammonia, particulate matter, and odor from deep-pit pig finishing facilities for decision support in selecting emission control technologies
December 1, 2006By Larry D. Jacobson
The results of this study show limited benefit to exhausting a portion of air through the pit rather than through the wall for deep-pit pig finishing barns. This conclusion comes from similar indoor...
Swine Health - General Disease
Pilot surveillance system for emerging diseases in swine-
November 15, 2006By Peter Davies
Regional spread of PRRS and other swine diseases continues to place a major burden on North American swine producers. Advances in computers and communications technology are creating new...
Animal Science
Analysis of periparturient factors affecting sow longevity in breeding herds
November 13, 2006By John Deen
The purpose of this study of this was to examine the effect of periparturient sow factors on the longevity of sows. This study followed sows from time of entry into the farrowing crate until a...
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
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...
Swine Health - PRRS
Implementation of a PRRSV Strain Database
August 1, 2006By Kay S. Faaberg
A PRRSV ORF5 database, accessible worldwide, was created for swine producers, practitioners and researchers (http://prrsv.ahc.umn.edu/). This database was established to fulfill one objective of the...
Swine Health - PRRS
Analysis of prevalent winds in areas with suspicious cases of PRRSV lateral transmission between farms
July 25, 2006By Robert Morrison
This report summarizes the analysis of prevalent winds in 16 pairs of neighboring PRRS virus-infected and PRRS virus-negative pig sites. Eight pairs were selected because airborne transmission was...
Environment - Manure Storage / Application
Evaluation of the effects of diet formulation method and inclusion of DDGS and phytase on manure phosphorus excretion of grow-finish pigs and on the concentration and forms of P in manure amended soil
July 20, 2006By G.C. Shurson
• Formulating diets with phytase reduces the concentration of total P in the manure compared to a conventional diet by as much as 30%. • Using DDGS in the diet results in no significant...
