Animal Well-being
Strategies to Optimize Sow Longevity
December 3, 2004By Sandra Rodreguez
Early removal of sows from the herd due to mortality, health problems and low production is a major bottleneck in the swine industry that amounts to animal welfare and economic concerns due to...
Pork Safety - Pre-Harvest
Evaluation of Porcine Antimicrobial Peptides as Antibiotic Alternatives
December 1, 2004By Guolong (Glenn) Zhang
The widespread use of antibiotics for growth promotion and disease prevention in the livestock industry is posing food safety and public health concerns. Antimicrobial peptides that are effective in...
Swine Health - General Disease
A novel PRRS vaccine in a bacterial vector known to stimulate strong cell-mediated and humoral immunity
November 5, 2004By MVSc|PhD|Ramesh Vemulapalli BVSc&AH
The results of this research project suggest that, despite several unique, advantageous properties, Brucella abortus RB51 is not very useful for developing effective recombinant PRRS vaccines.
Animal Well-being
Impact of early weaning and photoperiod manipulation on sow and piglet welfare
November 3, 2004By Janeen L. Salak-Johnson PhD
Animals adapt more readily to photoperiod cues than other environmental cues since photoperiod is more predictable and consistent over time. Previous work has shown limited (if any) affects of...
Swine Health - General Disease
Efficacy of Multiplex SIV TaqMan? RT-PCR and PRDC Microarray Hybridization in Predicting Swine Influenza Virus Genotype
November 1, 2004By Kay S. Faaberg
New Multiplex TaqMan? RT-PCR genotyping assays for HA and NA genes of SIV were developed. These new diagnostic tests will advance available SIV diagnostics, both in speed and accuracy. We found that...
Environment - Manure Storage / Application
Utilization of Crystalline Amino Acids by the Gut in Growing Pigs
November 1, 2004By Nathalie L. Trottier
Conventional diets containing corn and soybean meal fed to growing pigs can be reduced in protein when a portion of the protein can be replaced by crystalline amino acids. These amino acids allow the...
Public Health - Antibiotics & Resistance
Persistance of plasmid-encoded resistance genes in the gastrointestinal bacterial flora of swine
October 20, 2004By Jeffery T. LeJeune
In the presence of antibiotics in the feed, pigs became readily colonized with E. coli resistant to the antibiotic ceftiofur. Some E. coli harboured the specific gene blaCMY-2, known to confer...
Animal Well-being
Enhancing Sow Welfare with High Fiber Diets and Frequent Feeding
October 13, 2004By G.C. Shurson|J.L. Johnston|J.P. Holt|Sam Baidoo
In this experiment, we attempted to employ a diet and feeding regimen that could be easily implemented in commercial production units while improving welfare as measured by occurrence of stereotypic...
Swine Health - General Disease
The influence of maternal antibody against porcine reproductive and respiratory syndrome virus (PRRSV) infection and the effect of a killed PRRSV vaccine in increasing the level of maternal antibody
October 7, 2004By Eileen Thacker
PRRSV-positive sow herds can produce PRRSV-negative pigs. This phenomenon is important in herd stabilization against PRRSV-induced disease. One possible explanation of this phenomenon would be that...
Swine Health - General Disease
Protective Immunity against Porcine Reproductive and Respiratory Syndrome Virus (PRRSV)Obtained by Passive Administration of Antibodies: Optimization of the Conditions
October 7, 2004By Fernando Osorio
Neutralizing antibodies are those antibodies produced by a pig infected with PRRSV which, when mixed with PRRSV in a test tube, render it uninfectious by inactivation. Based on the results of...
Swine Health - General Disease
Clostridium difficile as a Cause of Enteritis in Neonatal Pigs
October 5, 2004By J. Glenn Songer
Strains of C. difficile from piglets are quite uniform genetically, which suggests that a single immunoprophylactic product, when developed, will be effective across the industry. Furthermore, the...
Public Health - Antibiotics & Resistance
Effects of egg yolk antibiotics and antibiotic regimens on carriage and shedding of Salmonella Typhimurium
October 1, 2004By Alan Mathew Ph.D.
Salmonella may reside in pigs during all stages of growth and may later contaminate pork products, thus presenting a foodborne hazard for humans. Often, salmonella are passed among hogs during...
