2024 Conference Program | Allen D. Leman Swine Conference

Saturday, September 21

8:15 a.m. - 4:30 p.m. George Foxcroft Reproduction Workshop - Managing the breeding herd in a changing environment

Organized in collaboration with the University of Alberta

Chairs: Mike Dyck and Jennifer Patterson, University of Alberta

The management of an efficient breeding herd must take into consideration a variety of "environments", including the animals' physiological environment, the housing environment, the regulatory environment and the technological environment, just to name a few. These ever-changing environments that affect production are driving the need for more sophisticated and adaptable management practices. In this session we will bring together experts to discuss technical and practical considerations in dealing with these evolving environments and how to maintain an efficient breeding herd. This workshop is designed for swine producers, veterinarians, and industry professionals looking to enhance their knowledge and practices in swine breeding management. Don't miss this opportunity to learn from the best and network with peers in the industry.

Managing hyperprolific sows with a focus on the litter
Fernando Bortolozzo, Universidade Federal do Rio Grande do Sul
Sweltering swine: How gestational heat stress shapes sow pregnancy and offspring development
Jay Johnson, University of Missouri
Augmenting piglet survival as litter size increases
Mark Knauer, North Carolina State University (Sponsored by the National Pork Board)
The changing environment of boar studs
Darwin Reicks, Reicks Veterinary Research & Consulting
Sow housing: Challenges and opportunities in a changing environment
Tom Parsons, University of Pennsylvania
20 years of group housing at CVFF: Achievements and key lessons learned
Carlos Roudergue, Country View Family Farms
Breeding herd labor retention in a changing environment
Jason Christensen, Eichelberger Farms Inc.
Technologies for improving swine production
Suzanne Leonard, North Carolina State University (Sponsored by the National Pork Board)

1:00 - 5:00 p.m. Geeks to Geeks: African swine fever updates and new developments

The African Swine Fever (ASF) pandemic has caused devastating losses to affected countries over the last 15+ years. In its role as a collaborating center for the World Organization for Animal Health, and a reference center for the Food and Agriculture Organization of the United Nations, the University of Minnesota Center for Animal Health and Food Safety (CAHFS) leads several capacity-building, outreach, and research activities in ASF-infected countries. Join the CAHFS team and a selection of guest speakers for a vibrant exchange and discussion on the latest news, advances, experiences, and developments on ASF prevention and control with the ultimate objective of enhancing disease preparedness and response.

Organized in collaboration with the Center for Animal Health and Food Safety

Chair: Andres Perez, University of Minnesota and Lucia Hunt, Minnesota Department of Agriculture

Perspectives of global ASF prevention and response
Liz Wagstrom, Wagstrom Consulting LLC
ASF in the Dominican Republic: Update and APHIS-led activities to prevent spread from the country
Fernando Lugo, Nianet Carrasquillo and Silvia Kreindel, U.S. Department of Agriculture, Animal and Plant Health Inspection Service
African swine fever in Europe: Forest fires and traveling embers
Tim Snider, PIC
The Impacts of ASF on animal, public, and environmental health in the Philippines
Jesper Hsu and Rachel Schambow, University of Minnesota
The novel application of the viability qPCR assay to assess the stability of ASFV in feed and feed ingredients
Declan Schroeder, University of Minnesota
Evaluation of point of care (POC) tests for ASF
Sylvester Ochwo, University of Minnesota

Sunday, September 22

8:00 a.m. - 12:00 p.m. Carlos Pijoan SDEC Symposium: Identifying knowledge gaps and breaking down barriers for disease control

Chair: Maria Pieters, University of Minnesota

Welcome and session introduction
Maria Pieters, University of Minnesota
Researching the way out of barriers for disease control
Mark Schwartz, University of Minnesota and Schwartz Farms
Mortality disposal practices during FAD outbreaks: A snapshot from the poultry industry
Rosemary Marusak, University of Minnesota
From farm to safety: Dead animal disposal practices and PRRSV risk
Igor Paploski, University of Minnesota
Alternatives to rendering for nursery/grow-finish mortality management: A cost and feasibility analysis
Marjorie Schleper, Christensen Farms
Detangling the causality web: Late nursery phase PRRS virus introductions
Brad Leuwerke, Swine Vet Center
Life at the bottom of the biosecurity pyramid: The economics of market haul sanitation
Edison Magalhaes, Iowa State University
Environmental sampling at PRRS outbreak sites: Detection frequency and semi-quantification
Cesar Corzo, University of Minnesota
Biosecurity compliance: A guide for non-levitating farm staff
Luc Dufresne, Demeter Veterinary Services
Things are not always as they seem: A roadmap to evaluate potential virus transmission and mitigation in feed
Jerry Shurson, University of Minnesota
Infectivity of PRRS virus in feed: With and without mitigants
Megan Hood, Reicks Veterinary Research and Consulting
Wrap up and session ends

1:00 - 3:15 p.m. New technologies and new approaches to control the spread of airborne diseases

This session on new technologies and approaches to control the spread of airborne diseases will start by presenting basic concepts of aerosol science and factors that contribute to aerosol disease transmission in the field and quickly will dive into reviewing technologies to prevent the transmission of airborne diseases that are currently available or are emerging. The session will also include practical approaches to biocontaint the spread of airborne diseases. The work presented in this workshop is possible because of the support provided the Swine Health Information Center (SHIC) and the Agriculture and Food Research Initiative Competitive Grant no. 2021-68014-33655 from the USDA’s National Institute of Food and Agriculture.

Chair: Montse Torremorell, University of Minnesota

Basics of aerosol science and air filtration
Chris Hogan, University of Minnesota
Factors that contribute to airborne virus transmission in the field
Montse Torremorell, University of Minnesota
PRRS incidence in filtered farms: what MSHMP tells us
Cesar Corzo, University of Minnesota
New control technologies to improve aerosol biosecurity
Chris Hogan, University of Minnesota
Electrostatic precipitators decrease virus transmission in experimentally infected pigs
Lan Wang, University of Minnesota
Fan coverings to decrease risk of disease dissemination
Erin Kettelkamp, Swine Vet Center (Sponsored by the Swine Health Information Center)
Electrostatic precipitation for biocontainment from finishing facilities exhaust fans
Brett Ramirez, Iowa State University (Co-sponsored by the Swine Health Information Center)

1:00 - 2:30 p.m. Clinical cases and problem-solving skills by DVM students

Chair: Perle Zhitnitskiy, University of Minnesota

Finalists for the Morrison Swine Innovator Prize will present their work during this session.

Acidify E. coli at pH 4 or 5?
Rachel Retterath, University of Minnesota
Evaluation of intradermal vaccination in piglets to improve welfare and labour efficiency, reduce stress responses and pain, and minimize injuries to piglets and producers
Madeline Benedetti, Ontario Veterinary College
Data for Dummies: Making sense of the data we didn't know we had
Ayva Bohr, Iowa State University
A practical method of establishing sow height dimensions
Savannah Thomson, Michigan State University
Unlocking the potential of inflammatory biomarkers: A new way to monitor areas of opportunity
Macy Moore, Iowa State University
Improvements in piglet thermoregulation with higher iron doses
Molly Jones, North Carolina State University
Feasibility of detection and isolation of PRRSV from swine deep tracheal secretions
Casondra Snow, University of Minnesota

2:45 - 5:00 p.m. Research highlights

This session showcases the most innovative and high-impact abstracts submitted by researchers to the Leman Conference. Come and learn about what is new in swine research around the world from a diverse group of science-driven experts.

Chairs: Tom Molitor and Igor Paploski, University of Minnesota

The role of sanitary status in the prevalence of multidrug resistant bacteria from pig farms: A One Health approach
Ana Marco Fuertes, Universidad Cardenal Herrera-CEU
Effect of dietary zinc sulfate in late gestation and lactation on sows and offspring performance
Jessica Lira da Silva, South Dakota State University
Evaluating the use of blood hemoglobin concentration (HbC) as a potential biomarker for locating at risk sows near parturition
Katlyn McClellan, South Dakota State University
The impact of extra-care in lightweight wean pigs
Audrey Field, South Dakota State University
Sow ability to wean one surplus piglet relative to the teat number and lactation feed intake according to the milk production
Ana Paula Mellagi, Universidade Federal do Rio Grande do Sul
Understanding the background of foreign labor (TN-visa workers) in the swine industry in Missouri and Illinois
Magdiel Lopez-Soriano, University of Missouri
Evaluation of gaseous ozone for decontaminating PRRSV and PEDV on non-porous surfaces in truck cabins
Thinh Tran Pham Tien, Iowa State University
Detection of multiple porcine viruses using target enrichment and real-time long-read sequencing from oral fluid field samples through TELSVirus workflow
Mariana Meneguzzi, University of Minnesota
Experimental evidence of immune-driven evolution of PRRSV-2
Nakarin Pamornchainavakul, University of Minnesota
Monitoring the persistence of SVA in tonsils of sows during PRRS elimination protocol in a sow herd under herd closure
Alejandrina Da Silva De Pita, Grupo Porcicola Mexicano

Monday, September 23

Tuesday, September 24

12:10 - 1:00 p.m. Carcass-cutting demonstration

The University of Minnesota Meat Laboratory brings the classroom to you to conclude the 50th Leman Conference with a pork-cutting demonstration and discussion on modern pork marketing. Join Dr. Ryan Cox, University of Minnesota Extension meat specialist; Jordan McCallum, Meat Laboratory supervisor; and Jerry Cannon, Development Leader at Hormel Foods Research & Development, as they demonstrate the most common methods for fabricating fresh pork cuts, as well as discuss current cutting trends and potential markets. Participants are welcome to join for the entire presentation or any portion of interest as a side of pork is cut to its various retail offerings. The program offers an opportunity to ask questions and discuss pork marketing in real time as the products are cut and trimmed.
Supported by Hormel Foods

10:30 a.m. - 12:00 p.m. Breakout Session

3:30 - 5:00 p.m. Breakout Session

Allen D. Leman Swine Conference

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10:30 a.m. - 12:00 p.m. Breakout Session

1:30 - 3:00 p.m. Breakout Session

3:30 - 5:00 p.m. Breakout Session

Allen D. Leman Swine Conference

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