Safe Pork 1999This symposium is a direct response to the accelerating need to share information on Salmonella epidemiology and control. Indeed, the increased need to share recent developments is reflected in the increase in submissions to this symposium. Whereas the first symposium in Ames, Iowa, USA, discussed 35 papers, and the second in Copenhagen, Denmark, included 73, the current symposium contains 100 titles from 14 countries.

Both quality and food safety are becoming focal points in pork production. Salmonella control has become a priority in many countries. Consequently, the scientific work in the areas of epidemiology, control and related topics has accelerated in recent years. Researchers are developing new insights at every level of the pork chain, including especially innovations in farm production and slaughter-processing. The need for timely dispersal of research in this area has never been greater. This goal of this conference is to meet that need.

Schedule

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1999
Friday, January 1st
12:00 AM

A retrospective study of salmonellosis in Swedish pig herds

A. Engvall, National Veterinary Institute
L. Malm, Swedish University of Agricultural Sciences
B.-M. Thorberg, National Veterinary Institute

Washington, DC, USA

12:00 AM

An estimate of Salmonella prevalence on Illinois swine farms using mesenteric lymph node cultures

D. Damman, University of Illinois Urbana-Champaign
P. B. Bahnson, University of Illinois Urbana-Champaign
R. M. Weigel, University of Illinois Urbana-Champaign
R. E. Isaacson, University of Illinois Urbana-Champaign
H. F. Troutt, University of Illinois Urbana-Champaign
J. Y. Kim, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

An exploratory study about contamination of pens of finishing pigs by ubiquitous Salmonella

P.-A. Beloeil, ANSES France
E. Eveno, ANSES France
P. Gerault, ANSES France
P. Fravalo, ANSES France
V. Rose, ANSES France
N. Rose, ANSES France
F. Madec, ANSES France

Washington, DC, USA

12:00 AM

An intervention study of the effect of implementing Salmonella-controlled feeding strategies in Salmonella-high prevalence herds

J. Dahl, Danish Bacon and Meat Council
L. Jørgensen, Danish Bacon and Meat Council
A. Wingstrand, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

An updated estimate of the economic costs of human illness due to food borne Salmonella in the United States

P. D. Frenzen, United States Department of Agriculture
J. C. Buzby, United States Department of Agriculture
T. Roberts, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Antibiotic sensitivity profile of Salmonella isolated from two slaughterhouses and human clinical cases

N. C. Limpitakis, Aristotle University of Thessaloniki
A. Abrahim, Aristotle University of Thessaloniki
A. Kansouzidou, Hospital for Pestilential Diseases of Thessaloniki
V. D. Daniilidis, Hospital for Pestilential Diseases of Thessaloniki
C. Genigeorgis, Aristotle University of Thessaloniki

Washington, DC, USA

12:00 AM

Antimicrobial resistance patterns of Salmonella isolates collected from slaughter age pigs

Paula J. Fedorka-Cray, United States Department of Agriculture
P. B. Bahnson, University of Illinois Urbana-Champaign
S. R. Ladely, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Assessing the risk of Salmonella transmission within primary pork production in Denmark

K. D. C. Stärk, Danish Bacon and Meat Council
J. Dahl, Danish Bacon and Meat Council
B. Dalsgaard, Danish Meat Research Institute
A. Wingstrand, Danish Meat Research Institute
V. Møgelmose, Danish Bacon and Meat Council
D. M. A. Lo Fo Wong, Technical University of Denmark
P. Willeberg, Technical University of Denmark

Washington, DC, USA

12:00 AM

Assessment of different treatments to reduce Salmonella in swine

A. Letellier, University of Montreal
S. Messier, University of Montreal
L. Lessard, Health Canada
S. Quessy, Health Canada

Washington, DC, USA

12:00 AM

Bacteriological assessment of the Salmonella status of market-aged pigs

P. Fravalo, ANSES France
K. Proux, ANSES France
E. Eveno, ANSES France
V. Rose, ANSES France
F. Humbert, ANSES France
G. Salvat, ANSES France
F. Madec, ANSES France

Washington, DC, USA

12:00 AM

Characterisation of Salmonella enterica isolated from swine herds in a cross-sectional study of the Danish swine production

D. L. Baggesen, Technical University of Denmark
J. Christensen, Technical University of Denmark
A. C. Nielsen, Danish Veterinary and Food Administration
B. Svensmark, Danish Bacon and Meat Council
Bent Nielsen, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

Clinical salmonellosis related to contaminated feedstuffs in a large swine production system

E. J. Neuman, Heartland Pork Enterprises, Inc.
T. S. Kniffen, Heartland Pork Enterprises, Inc.

Washington, DC, USA

12:00 AM

Comparison of initial enrichment on the recovery of Salmonellae from swine lymph nodes and cecal contents at slaughter

R. B. Harvey, United States Department of Agriculture
R. C. Anderson, United States Department of Agriculture
L. A. Farrington, Texas A&M University
R. E. Drolesky, United States Department of Agriculture
K. J. Genovese, Texas A&M University
L. H. Stanker, United States Department of Agriculture
D. J. Nisbet, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Comparison of selenite cystine broth, tetrathionate broth and rappaport-vassiliadis broth for the recovery of Salmonella from swine feces

G. B. Michael, Federal University of Rio Grande do Sul
M. Cardoso, Federal University of Rio Grande do Sul
M. Costa, Federal University of Rio Grande do Sul

Washington, DC, USA

12:00 AM

Comparison of two enrichment schemes for qualitative recovery of Salmonella serovar Choleraesuis from rectal swabs collected from neonatal and early weaned pigs

R. A. Anderson, United States Department of Agriculture
R. B. Harvey, United States Department of Agriculture
K. J. Genovese, Texas A&M University
L. H. Stanker, United States Department of Agriculture
J. R. DeLoach, MS BioScience, Inc.
D. J. Nisbet, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Competitive exclusion of Salmonella serovar Typhimurium from the gut of early weaned pigs

D J. Nisbet, United States Department of Agriculture
R. C. Anderson, United States Department of Agriculture
R. B. Harvey, United States Department of Agriculture
K. J. Genovese, Texas A&M University
J. R. DeLoach, MS BioScience Inc.
L. H. Stanker, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Control strategies for Salmonella in the pig to pork chain in the European Union

A. Käsbohrer, Federal Office of Consumer Protection and Food Safety

Washington, DC, USA

12:00 AM

Correlation between serological results from level 3 herds in the Danish Salmonella surveillance and control programme system and swab samples from carcasses from the same herd

L. Lund Sørensen, Danish Bacon and Meat Council
G. Pedersen, Danish Bacon and Meat Council
B. Nielsen, Danish Bacon and Meat Council
J. Dahl, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

Detection of swine exposed to Salmonella spp.

Jeffrey T. Gray, University of Nebraska-Lincoln
Paula J. Fedorka-Cray, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Development and implementation of a HACCP-based on farm quality assurance program for swine in Canada

S. Quessy, Health Canada
C. Scovil, Canadian Pork Council

Washington, DC, USA

12:00 AM

Development of an ELISA test to assess Salmonella status of pig herds

K. Proux, ANSES France
P. Fravalo, ANSES France
P. A. Beloeil, ANSES France
F. Humbert, ANSES France
N. Rose, ANSES France
C. Houdayer, ANSES France
V. Rose, ANSES France
J. P. Picault, ANSES France
F. Madec, ANSES France

Washington, DC, USA

12:00 AM

Different ways of handling the bung (rectum) during pig slaughter dressing related to Salmonella sero-positivity in slaughtered pigs and the number of Salmonella positive meat samples

L. Lund Sørensen, Danish Bacon and Meat Council
L. K. Thomsen, COWI A/S
J. V. Pedersen, Danish Bacon and Meat Council
B. Nielsen, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

Distribution of Salmonella contamination in two pig abattoirs

R. H. Davies, United Kingdom Department for Environment, Food and Rural Affairs
I. M. McLaren, United Kingdom Department for Environment, Food and Rural Affairs
S. Bedford, United Kingdom Department for Environment, Food and Rural Affairs

Washington, DC, USA

12:00 AM

Effect of competitive exclusion on transmission of Salmonella choleraesuis between early weaned pigs

R. C. Anderson, United States Department of Agriculture
K. J. Genovese, Texas A&M University
R. B. Harvey, United States Department of Agriculture
L. H. Stanker, United States Department of Agriculture
N. K. Keith, Keith Associates, Inc.
J. R. DeLoach, MS BioScience, Inc.
D. J. Nisbet, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Effect of formic acid in drinking water on the incidence of Salmonella in growing-finishing pigs

C. F. Hansen, National Committee for Pig Production
L. Jørgensen, National Committee for Pig Production
J. Dahl, National Committee for Pig Production
N. Kjeldsen, National Committee for Pig Production

Washington, DC, USA

12:00 AM

Effect of withdrawing feed from hogs prior to slaughter on the prevalence of gastrointestinal lacerations at slaughter

W. E. Morgan Morrow, North Carolina State University
Peter R. Davies, North Carolina State University
T. See, North Carolina State University
J. Eisemann, North Carolina State University
K. Zering, North Carolina State University

Washington, DC, USA

12:00 AM

Effects of some methodologic factors on detection of Salmonella in swine feces

Peter R. Davies, North Carolina State University
Julie A. Funk, North Carolina State University
M. G. Nichols, North Carolina State University
J. M. O'Carroll, ATP Inc.
P. K. Turkson, University of Cape Coast
W. A. Gebreyes, North Carolina State University
S. Ladely, United States Department of Agriculture
Paula J. Fedorka-Cray, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Effects on Salmonella occurrence in the pork production chain when interventions are focused on herd level

B.-M. Thorberg, National Veterinary Institute
H. Wahlström, National Veterinary Institute
E. Engvall, National Veterinary Institute

Washington, DC, USA

12:00 AM

Epidemiological and economic effects of Salmonella control in the pork supply chain

M. A. van der Gaag, Wageningen Agricultural University
G. B. C. Backus, Agricultural Economics Research Institute

Washington, DC, USA

12:00 AM

Epidemiological survey of antimicrobial-resistant of Salmonella in market-age swine

R. B. Harvey, United States Department of Agriculture
L. A. Farrington, Texas A&M University
S. A. Buckley, United States Department of Agriculture
R. E. Drolesky, United States Department of Agriculture
L. H. Stanker, United States Department of Agriculture
D. J. Nisbet, United States Department of Agriculture
P. D. Inskip, Texas A&M University

Washington, DC, USA

12:00 AM

Epidemiology and control of Salmonella in pork - some of the questions

Peter R. Davies, North Carolina State University
Julie A. Funk, North Carolina State University

Washington, DC, USA

12:00 AM

Eradication of multi-resistant Salmonella typhimurium DT104 infections in 15 Danish swine herds

V. Møgelmose, Danish Bacon and Meat Council
B. Nielsen, Danish Bacon and Meat Council
L. Lund Sørensen, Danish Bacon and Meat Council
J. Dahl, Danish Bacon and Meat Council
A. Wingstrand, Danish Bacon and Meat Council
M. Johansen, Danish Bacon and Meat Council
K. Pihl, Danish Bacon and Meat Council
V. Nielsen, Danish Bacon and Meat Council
B. Svensmark, Danish Bacon and Meat Council
F. Udsen, Danish Bacon and Meat Council
L. P. Larsen, Danish Bacon and Meat Council
D. L. Baggesen, Technical University of Denmark

Washington, DC, USA

12:00 AM

Evaluation of a Dcya D(crp-cdt) Salmonella choleraesuis commercial vaccine to protect against clinical signs caused by and reduce shedding of Salmonella typhimurium in pigs

S. B. Charles, Bayer Corporation
E. Trigo, Bayer Corporation
T. Settje, Bayer Corporation
A. Abraham, Bayer Corporation
P. Johnson, Bayer Corporation

Washington, DC, USA

12:00 AM

Evaluation of the association between pen fecal accumulation and prevalence of Salmonella enterica shedding in swine

Julie A. Funk, North Carolina State University
Peter R. Davies, North Carolina State University
M A. Nichols, North Carolina State University
W. E. Morgan Morrow, North Carolina State University

Washington, DC, USA

12:00 AM

Evaluation of two commercially available ELISA test kits for detection of Salmonellae in swine lymph nodes and cecal and fecal contents

R. B. Harvey, United States Department of Agriculture
L. A. Farrington, Texas A&M University
R. E. Droleskey, United States Department of Agriculture
R. C. Anderson, United States Department of Agriculture
L. H. Stanker, United States Department of Agriculture
D. J. Nisbet, United States Department of Agriculture

Washington, DC, USA

12:00 AM

German guidelines for the reduction of Salmonella prevalence in fattening pigs

B. Polten, Federal Ministry of Food, Agriculture, and Forestry
F. J. Conraths, Federal Research Center for Virology of Animals
D. Protz, Federal Institute for Health Protection of Consumers and Veterinary Medicine
T. Blaha, University of Minnesota

Washington, DC, USA

12:00 AM

Group relationship of Salmonella ELISA antibody status of grower-finisher hogs to fecal shedding detectable by culture

Bruce Lawhorn, Texas A&M University

Washington, DC, USA

12:00 AM

Harvest epidemiology of Salmonella contamination in EU pig slaughterhouses

T. Hald, Technical University of Denmark
A. Wingstrand, Danish Bacon and Meat Council
M. Swanenburg, Utrecht University
A. von Altrock, Free University of Berlin
N. C. Limpitakis, Aristotle University of Thessaloniki
B.-M. Thorberg, National Veterinary Institute

Washington, DC, USA

12:00 AM

Hazard analysis of Salmonella in pork using tree diagrams

K. D. C. Stärk, Danish Bacon and Meat Council
B. Rasmussen, Risø National Laboratory

Washington, DC, USA

12:00 AM

Herd-level risk factors for the introduction and spread of Salmonella in pig herds

D. M. A. Lo Fo Wong, Technical University of Denmark
J. Dahl, Danish Bacon and Meat Council
A. von Altrock, Free University of Berlin
S. Grafanakis, Aristotle University of Thessaloniki
B. M. Thorberg, National Veterinary Institute
P. J. van der Wolf, Animal Health Service

Washington, DC, USA

12:00 AM

Host response to different treatments to reduce Salmonella infections in swine

A. Letellier, University of Montreal
S. Messier, University of Montreal
L. Lessard, Health Canada
S. Quessy, Health Canada

Washington, DC, USA

12:00 AM

Identification of a porcine-specific adhesin of Salmonella typhimurium and a possible mechanism mediating persistent infections of swine

R. E. Isaacson, University of Illinois Urbana-Champaign
C. Althouse, University of Illinois Urbana-Champaign
S. Patterson, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Implementation of a Salmonella-free meat pork production system in Belgium: study plan, methods and preliminary screening results

B. Jacob, University of Liege
B. Groven, University of Liege
E. Flament, University of Liege
E. Verstraete, University of Liege
G. Daube, University of Liege

Washington, DC, USA

12:00 AM

Investigation into the capability of a Salmonella choleraesuis live vaccine to reduce the shedding of Salmonella typhimurium in swine

K. J. Gibson, University of Minnesota
T. Blaha, University of Minnesota
R. K. Frank, University of Minnesota
S. D. Charles, University of Minnesota
E. Trigo, Bayer Corporation

Washington, DC, USA

12:00 AM

Investigations into the infection-contamination-infection cycle of zoonotic Salmonella on swine farms: Investigation into the occurrence of Salmonella in the environment of four selected Minnesota swine farms

A. R. Carlson, Swine Health Center
T. Blaha, University of Minnesota

Washington, DC, USA

12:00 AM

Investigations into the infection-contamination-infection cycle of zoonotic Salmonella on swine farms: Investigation into the occurrence of Salmonella on 25 selected Minnesota swine farms

A. R. Carlson, Swine Health Center
T. Blaha, University of Minnesota

Washington, DC, USA

12:00 AM

Investigations into the infection-contamination-infection cycle of zoonotic Salmonella on swine farms: Investigation of the simultaneous occurrence of Salmonella in animals and their environment on two selected Minnesota swine farms

A. R. Carlson, Swine Health Center
T. Blaha, University of Minnesota

Washington, DC, USA

12:00 AM

Investigations into the infection-contamination-infection cycle of zoonotic Salmonella on swine farms: Serovar and sensitivity patterns of Salmonella isolates from animals and environments from selected Minnesota swine farms

T. G. Blaha, University of Minnesota
A. R. Carlson, Swine Health Center
Paula J. Fedorka-Cray, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Is there sufficient consumer demand for certified safer pork?

G. Y. Miller, University of Illinois Urbana-Champaign
L. J. Unnevehr, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Lactic acid and acetic acid reduce Salmonella in fermented pig feed

R. L. van Winsen, Utrecht University
J. M. A. Snijders, Utrecht University
H. A. P. Urlings, Utrecht University

Washington, DC, USA

12:00 AM

Long term shedding of Salmonella choleraesuis following experimental infection of very young piglets

R. A. Anderson, United States Department of Agriculture
R. B. Harvey, United States Department of Agriculture
K. J. Genovese, Texas A&M University
L. H. Stanker, United States Department of Agriculture
J. R. DeLoach, MS BioScience, Inc.
D. J. Nisbet, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Longitudinal study of Salmonella shedding in 2 three-site swine production systems

Julie A. Funk, North Carolina State University
Peter R. Davies, North Carolina State University
M A. Nichols, North Carolina State University

Washington, DC, USA

12:00 AM

National antimicrobial resistance monitoring system: Results for swine

Paula J. Fedorka-Cray, United States Department of Agriculture
K. E. Petersen, United States Department of Agriculture
D. A. Dargatz, United States Department of Agriculture
L. Tollefson, Federal Drug Administration
N. E. Wineland, United States Department of Agriculture
M. Headrick, United States Department of Agriculture
K. Hollinger, United States Department of Agriculture
K. Ferris, United States Department of Agriculture

Washington, DC, USA

12:00 AM

No effect of PRRSV on herd prevalence of Salmonella enterica

S. Mortensen, Danish Bacon and Meat Council
V. Møgelmose, Danish Bacon and Meat Council
B. Nielsen, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

No outbreaks of Salmonella among humans traced back to Swedish pork during 1996 and 1997

B.-M. Thorberg, National Veterinary Institute
H. Lindqvist, Swedish Board of Agriculture
B. de Jong, Swedish Institute of Infectious Disease Control

Washington, DC, USA

12:00 AM

Occurrence of Salmonella in finishing pigs in South Brazil

L. H. N. Weiss, Federal University of Rio Grande do Sul
R. Nonnig, Federal University of Rio Grande do Sul
M. Cardoso, Federal University of Rio Grande do Sul
M. Costa, Federal University of Rio Grande do Sul

Washington, DC, USA

12:00 AM

Outbreak of Salmonella manhattan associated with a ready-to-eat pork product in Denmark in 1998

T. Hald, Technical University of Denmark
K. Mølbak, Technical University of Denmark
D. L. Baggesen, Technical University of Denmark

Washington, DC, USA

12:00 AM

Persistent environmental strains of Salmonella infantis at two Danish slaughterhouses, two case-stories

L. Lund Sørensen, Danish Bacon and Meat Council
R. Sørensen, Danish Meat Research Institute
K. Klint, Danish Veterinary Service
B. Nielsen, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

Pork producers attitudes, knowledge and production practices that relate to on farm HACCP development

M. M. Michalak, University of Illinois Urbana-Champaign
P. B. Bahnson, University of Illinois Urbana-Champaign
G. Y. Miller, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Pork producers' cost estimates of on-farm Salmonella testing

D. R. Mark, Kansas State University
M. A. Boland, Kansas State University
J. A. Fox, Kansas State University

Washington, DC, USA

12:00 AM

Post harvest epidemioilogy of Salmonella enterica in pork: Prevalence in the environment, carcasses and by-products in two slaughterhouses in Greece (1996-1998)

N. C. Limpitakis, Aristotle University of Thessaloniki
C. Genigeorgis, Aristotle University of Thessaloniki
A. Abrahim, Aristotle University of Thessaloniki
L. Leontides, University of Thessaly
S. Grafanakis, Aristotle University of Thessaloniki
E. Iosifidou, Aristotle University of Thessaloniki

Washington, DC, USA

12:00 AM

Preliminary experiments involving Salmonella-immune lymphokine in vivo effects on neutrophil function in weaned pigs and Salmonella choloraesuis organ invasion in neonatal pigs

K. J. Genovese, United States Department of Agriculture
R. C. Anderson, United States Department of Agriculture
D. J. Nisbet, United States Department of Agriculture
R. B. Harvey, United States Department of Agriculture
V. K. Lowry, Texas A&M University
L. H. Stanker, United States Department of Agriculture
M. H. Kogut, Texas A&M University

Washington, DC, USA

12:00 AM

Prevalence of Salmonella enterica in pigs before the start of the Danish Salmonella Control Program (1993/94) and four years later (1998)

J. Christensen, Technical University of Denmark
D. L. Baggesen, Technical University of Denmark
A. C. Nielsen, Danish Veterinary and Food Administration
B. Nielsen, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

Prevalence of Salmonella spp in the feces on farm and ceca at slaughter for a cohort of finishing pigs

W. E. Morgan Morrow, North Carolina State University
Peter R. Davies, North Carolina State University
T. See, North Carolina State University
J. Eisemann, North Carolina State University
K. Zering, North Carolina State University
S. Kihlstrom, North Carolina State University
K. Karli, North Carolina State University

Washington, DC, USA

12:00 AM

Quantitative assessment of the sources of human salmonellosis attributable to pork

T. Hald, Technical University of Denmark
H. C. Wegener, Technical University of Denmark

Washington, DC, USA

12:00 AM

Quantitative determination of the challenge strain content of the ileum, caecum and ileocaecal lymph nodes following oral challenge of swine with S. typhimurium PT104

S. Springer, Impfstoffwerk Dessau-Tornau GmbH
G. Steinbach, Impfstoffwerk Dessau-Tornau GmbH
T. Lindner, Impfstoffwerk Dessau-Tornau GmbH
H.-J. Selbitz, Impfstoffwerk Dessau-Tornau GmbH

Washington, DC, USA

12:00 AM

Quantitative risk assessment of the introduction and transmission of Salmonella infection in the stable-to table chain of pork production

D M. A. Lo Fo Wong, Technical University of Denmark
T. Hald, Technical University of Denmark

Washington, DC, USA

12:00 AM

Reactivities towards enterobacterial LPS in pig sera from herds in a Salmonella non-endemic region

C. Wiuff, Technical University of Denmark
B. M. Thorberg, National Veterinary Institute
A. Engvall, National Veterinary Institute
P. Lind, Technical University of Denmark

Washington, DC, USA

12:00 AM

Recovery of Salmonella serotypes from swine faecal samples using ISO 6579

R. L. van Winsen, Utrecht University
M. Swanenburg, Utrecht University
J. M.A. Snijders, Utrecht University
H. A. P. Urlings, Utrecht University

Washington, DC, USA

12:00 AM

Reservoirs of Salmonella infection on swine farms in lllinois

R. Weigel, University of Illinois Urbana-Champaign
D. A. Barber, University of Illinois Urbana-Champaign
R. E. Isaacson, University of Illinois Urbana-Champaign
P. B. Bahnson, University of Illinois Urbana-Champaign
C. J. Jones, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Resulls of a longitudinal study of Salmonella enterica infections in 5 sero-positive and 5 sero-negative finishing swine herds in The Netherlands

P. J. van der Wolf, Animal Health Service
W. B. Wolbers, Animal Health Service
A. R. W. Elbers, Animal Health Service
F. W. van Schie, Animal Health Service
W. A. Hunneman, Animal Health Service
M. J. M. Tielen, Animal Health Service

Washington, DC, USA

12:00 AM

Results of the Styrian Salmonella surveillance in pigs

J. Koefer, Department of Veterinary Administration in Styria
P. Pless, Department of Veterinary Administration in Styria
K. Fuchs, Joanneum Research

Washington, DC, USA

12:00 AM

Risk factors associated with shedding of salmonella by U.S. finishing hogs

E. J. Bush, United States Department of Agriculture
B. Wagner, United States Department of Agriculture
Paula J. Fedorka-Cray, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Risk factors associated with the presence of Salmonella in swine herds in Quebec

S. Quessy, Health Canada
A. Letellier, University of Montreal
E. Nadeau, University of Montreal

Washington, DC, USA

12:00 AM

Salmonella in commercial swine from weaning through slaughter

T. Proescholdt, Iowa State University
P. Turkson, North Carolina State University
J. McKean, Iowa State University
Peter R. Davies, North Carolina State University
Julie A. Funk, North Carolina State University
H. S. Hurd, United States Department of Agriculture
G. Beran, Iowa State University

Washington, DC, USA

12:00 AM

Salmonella prevalence in market weight pigs before and after shipment to slaughter

J. Y. Kim, University of Illinois Urbana-Champaign
P. B. Bahnson, University of Illinois Urbana-Champaign
H. F. Troutt, University of Illinois Urbana-Champaign
R. E. Isaacson, University of Illinois Urbana-Champaign
R. M. Weigel, University of Illinois Urbana-Champaign
G. Y. Miller, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Salmonella prevalence serotypes and patterns of antimicrobial resistance in cohorts of nursery and finishing pigs

W. A. Gebreyes, North Carolina State University
M. B. Turner, North Carolina State University
Julie A. Funk, North Carolina State University
C. Altier, North Carolina State University
Peter R. Davies, North Carolina State University

Washington, DC, USA

12:00 AM

Salmonella-prevalences in Danish organic, free-range, conventional and breeding herds

A. Wingstrand, Federation of Danish Pig Producers and Slaughterhouses
J. Dahl, Federation of Danish Pig Producers and Slaughterhouses
D M. A. Lo Fo Wong, Technical University of Denmark

Washington, DC, USA

12:00 AM

Sampling of environment and carcasses for the detection of Salmonella in swine abattoirs

N. Rheault, University of Montreal
S. Quessy, Health Canada

Washington, DC, USA

12:00 AM

Sensitivity of various fecal sample collections techniques for detection of Salmonella typhimurium in finish hogs

H. S. Hurd, United States Department of Agriculture
T. J. Stabel, United States Department of Agriculture
S. Carlson, United States Department of Agriculture

Washington, DC, USA

12:00 AM

Serologic and bacteriological responses of pigs infected with three serotypes of Salmonella

D. L. Baum, Boehringer Ingelheim Vetmedica, Inc.
D. L. Harris, Iowa State University
Bent Nielsen, Federation of Danish Pig Producers and Slaughterhouses

Washington, DC, USA

12:00 AM

Serological detection of antibodies against Salmonella polysaccarides in ELISA employing a new method for coupling of polysaccharides

E. S. Jauho, Exiqon
C. Wiuff, Technical University of Denmark
U. Boas, Exiqon
K. Wredstrøm, Exiqon
B. Pedersen, Exiqon
L. O. Andresen, Technical University of Denmark
P. M. H. Heegaard, Technical University of Denmark
M. H. Jakobsen, Exiqon

Washington, DC, USA

12:00 AM

Spatial and temporal patterns of the distribution of Salmonella on swine farms in Illinois

D. A. Barber, University of Illinois Urbana-Champaign
R. W. Weigel, University of Illinois Urbana-Champaign
R. E. Isaacson, University of Illinois Urbana-Champaign
P. B. Bahnson, University of Illinois Urbana-Champaign
C. J. Jones, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

Statistical aspects in the Styrian Salmonella surveillance program in pigs

K. Fuchs, Joanneum Research
J. Koefer, Department of Veterinary Administration in Styria
P. Pless, Department of Veterinary Administration in Styria

Washington, DC, USA

12:00 AM

Study plan and preliminary results of the intervention in the Salmonella status of finishing herds by adding organic acids to the drinking water of finishers

P. J. van der Wolf, Animal Health Service
F. W. van Schie, Animal Health Service
A. R. W. Elbers, Animal Health Service
W. A. Hunneman, Animal Health Service
M. J. M. Tielen, Animal Health Service

Washington, DC, USA

12:00 AM

Success-rate for eradication of Salmonella by cleaning and restocking pig herds and the use of antemortem-blood samples in herds after restocking

J. Dahl, Federation of Danish Pig Producers and Slaughterhouses

Washington, DC, USA

12:00 AM

Testing the proficiency of the German "SALMOTYPE-ELISA" to identify Salmonella antibodies in serum and meat juice from USDA Diagnostic Laboratories

T. Blaha, University of Minnesota
J. Gabert, Labor Diagnostik GmbH
T. Kramer, Labor Diagnostik GmbH
C. Weber, Labor Diagnostik GmbH

Washington, DC, USA

12:00 AM

The association of antimicrobial resistance patterns and reported usage of antimicrobials in commercial growing pig production

P. B. Bahnson, University of Illinois Urbana-Champaign
Paula J. Fedorka-Cray, United States Department of Agriculture

Washington, DC, USA

12:00 AM

The effect of buffered peptone water pre-enrichment on detected prevalence of Salmonella in swine feces

J. Y. Kim, University of Illinois Urbana-Champaign
P. B. Bahnson, University of Illinois Urbana-Champaign
I. Kakoma, University of Illinois Urbana-Champaign
R. E. Isaacson, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

The effect of feed withdrawal on the shedding of Salmonella typhimurium by swine

R. E. Isaacson, University of Illinois Urbana-Champaign
R. M. Weigel, University of Illinois Urbana-Champaign
L. D. Firkins, University of Illinois Urbana-Champaign
P. Bahnson, University of Illinois Urbana-Champaign

Washington, DC, USA

12:00 AM

The effect of feeding non-heat treated, non-pelleted feed compared to feeding pelleted, heat-treated feed on the Salmonella-prevalence of finishing pigs

N. J. Kjeldsen, National Committee for Pig Production
J. Dahl, National Committee for Pig Production

Washington, DC, USA

12:00 AM

The effect of feeding pellets, meal and heat treatment on the Salmonella-prevalence of finishing pigs

J. Jørgensen, National Committee for Pig Production
J. Dahl, National Committee for Pig Production
A. Wingstrand, National Committee for Pig Production

Washington, DC, USA

12:00 AM

The effect of intermittent shedding on prevalence estimation in populations

H. S. Hurd, United States Department of Agriculture
W. D. Schlosser, United States Department of Agriculture
E. D. Ebel, United States Department of Agriculture

Washington, DC, USA

12:00 AM

The emergence of nalidixic acid resistant, multiresistant S. typhimurium DT104 in Denmark. An outbreak in humans traced back to pork

D. L. Baggesen, Technical University of Denmark
F. Aarestrup, Technical University of Denmark
K. Mølbak, Technical University of Denmark

Washington, DC, USA

12:00 AM

The emergence of nalidixic acid resistant, multiresistant S. typhimurium DT104 in Denmark. An outbreak in humans traced back to pork

T. G. Blaha, University of Minnesota
D. Boxrud, Minnesota Department of Health
J. Bender, Minnesota Department of Health

Washington, DC, USA

12:00 AM

The influence of change in feeding and management on the prevalence of multi-resistant Salmonella typhimurium DTI 04 in Danish pigherds. Four case stories

M. Johansen, Danish Bacon and Meat Council
V. Møgelmose, Danish Bacon and Meat Council
J. Dahl, Danish Bacon and Meat Council
F. Udesen, Danish Bacon and Meat Council
B. Nielsen, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

The relation between Salmonella-shedding and the Danish Salmonella-Mix-ELISA on the pig-level

J. Dahl, Danish Bacon and Meat Council

Washington, DC, USA

12:00 AM

The role of epidemiology in food safety issues in governmental decisions and actions

M. E. Torrence, United States Department of Agriculture

Washington, DC, USA

12:00 AM

The Salmonella surveillance and control programme in Norway

B. Fredriksen, National Veterinary Institute
P. Hopp, National Veterinary Institute
M. Sandberg, National Veterinary Institute

Washington, DC, USA

12:00 AM

The use of a commercial test system (SALMOTYPE ELISA) for tracing antibodies against Salmonella in the serum of pigs

J. Gabert, Labor Diagnostik GmbH
Barbara Schalch, Ludwig Maximilian University
Birgit Greil, Ludwig Maximilian University
Brigitte Sperner, Ludwig Maximilian University
A. Stolle, Ludwig Maximilian University
Cornelia Weber, Labor Diagnostik GmbH
T. Kramer, Labor Diagnostik GmbH

Washington, DC, USA

12:00 AM

Tonsils of slaughtered pigs as marker sample for Salmonella positive pork

M. Swanenburg, Utrecht University
H. A. P. Urlings, Utrecht University
D. A. Keuzenkamp, Utrecht University
J. M. A. Snijders, Utrecht University

Washington, DC, USA

12:00 AM

Tracing back multi-resistant Salmonella typhimurium DTI04 from pork at the slaughterhouse to a specific swine herd by strategical use of serology and culture

Bent Nielsen, Danish Bacon and Meat Council
V. Møgelmose, Danish Bacon and Meat Council
L. Lund Sørensen, Danish Bacon and Meat Council
A. C. Nielsen, Danish Veterinary and Food Administration

Washington, DC, USA

12:00 AM