Jul 23
Pre-Conference session

12:30pm Welcome

Dr. Daniel Linhares, Associate Professor, Iowa State University

12:35pm Summary of monitoring & surveillance advances

Dr. Daniel Linhares, Associate Professor, Iowa State University

We will provide a summary of the 4 hours session given at the 2023 AASV annual meeting on PRRSV monitoring & surveillance systems.

12:55pm POMP - Summary of Preliminary Findings

Dr. Chris Rademacher, Clinical Professor, Iowa State University

Summary of initial findings of the initial herds enrolled in the PRRS Outbreak Management Protocol (POMP)

1:15pm Timing of Herd Closures (Early vs Delayed)

Dr. Paul Yeske, Swine Vet Center

1:30pm PRRS Modified Live Vaccine (MLV) – When and How We Use It

Dr. Matt Ackerman, Private Practitioner, Pork Veterinary Solutions

We will discuss the appropriate use of MLV PRRS vaccine:

  1. When it is used
  2. How it is used and
  3. what success looks like.

1:45pm LVI - When and How We Use It

Dr. Tom Petznick, Veterinarian, ArkCare

2:00pm Big Picture Discussion

Panel Discussion

2:30pm Break

2:45pm PRRS and the Challenge of Gilt Management

Dr. Amy Maschhoff, Associate Director of Health and Animal Care, The Maschhoffs

The philosophy of gilt management during PRRS outbreaks continues to be a challenge. Whether it be the age of exposure, method of exposure, a breeding project, production implications and others, gilt management is a vital part of PRRS elimination and control strategies.

3:00pm Living with PRRS vs Eliminating PRRS

Dr. Peter Schneider, Veterinarian, Schneider Pork Farms

3:15pm Strategies to Mitigate Sow Farm Risk in Growing Pig Dense Regions

Dr. Katie Coleman, Director of Biosecurity, Iowa Select Farms

Discussion of strategies to reduce the risk of PRRS virus introductions into sow farms in swine-dense regions.

3:30pm Control Topics Discussion

Panel Discussion

4:00pm Managing Case of Rapidly Evolving PRRS in Sow Farm

Deb Murray, Veterinarian, New Fashion Pork

4:15pm Tips for managing long herd closures

Dr. Paul Yeske, Swine Vet Center

4:30pm Strategies to shorten time to stability

Dr. Jason Kelly, Veterinarian, Suidae Health & Production

4:45pm Elimination Topics Discussion

Panel Discussion

5:15pm Pre-Conference Social

BBQ and beverages

7:00pm Adjourn

Jul 24
7:00am Registration opens

Breakfast provided

Morning Plenary Session

Moderator: Dr. Christopher Rademacher, Clinical Professor, Iowa State University

8:00am Welcome

Dr. Patrick Halbur, Department Chair, Veterinary Diagnostic and Production Animal Medicine, Iowa State University

8:15am Progress in Building New VDL Infrastructure and USDA Health Certification (ASF/CSF Monitored) for US Swine

Dr. Rodger Main, Director, Veterinary Diagnostic Laboratory, Iowa State University

A timely update will be provided on the new ISU VDL building project (Phase I and Phase II) currently underway and the start-up of the US Swine Health Improvement Plan which continues in its’ development and is on-pace for codification in 2024.

9:00am Schultz Lectureship - What is happening in EU with ASF?

Dr. Dustin Oedekoven, Chief Veterinarian, National Pork Board

9:45am ISU Science in Practice Award and Roy Schultz Graduate Student Awards

Dr. Chris Rademacher, Clinical Professor, Iowa State University

10:00am BREAK

10:30am You Can't Hire 'em, and if You do, You Can't Keep 'em !

Ron Hayden, Sr. Partner, Ag1Source

So, “recruitment and retention” in the Ag Industry, Swine segment and the Vet Med platform……… !! That’s a challenge of it’s own. Let’s break down some statistics, some survey data, some fun history, peak at some trend lines, and dive off into the deep end, with or without our life jacket on, you choose, and see what happens !

11:15am Putting antimicrobial stewardship in swine into the context of other veterinary species and human efforts (Hurd/McKean Lecture)

Dr. Mike Apley, Professor, Kansas State University

Antimicrobial stewardship (AMS), like the term sustainability, has different meanings to different people.  The AMS term is best understood in the context of efforts to address AMS within different veterinary segments as well as in human medicine.  The ultimate question is whether there are practical applications of AMS at the decision point for each antimicrobial use.

12:00pm Lunch

Concurrent session: Scientific track

Moderators: Isadora Machado and Peng Li

1:10pm Frequency of porcine rotaviruses A, B, C detection in US swine based on PCR data during 2015-2022

Ethan Aljets, Veterinary Microbiologist, Iowa State University

An examination of the detection frequencies for porcine RVA, RVB, and RVC in US swine herds by analyzing PCR data obtained from the Iowa State University Veterinary Diagnostic Lab from 2015-2022.

1:20pm Development, evaluation and clinical application of PRRSV-2 vaccine-specific real-time RT-PCR assays

Dr. Gaurav Rawal, Graduate Research Assistant, Iowa State University

TaqMan probe-based singleplex real-time RT-PCR assays for specific detection of six PRRSV-2 MLV vaccine viruses (Ingelvac PRRS MLV, Ingelvac PRRS ATP, Fostera PRRS, Prime Pac PRRS, Prevacent PRRS, and PRRSGard) were evaluated. A multiplex real-time RT-PCR for detecting the three most commonly used vaccines (Prevacent PRRS, Ingelvac PRRS MLV, and Fostera PRRS) were further developed and validated. The data will be presented and the clinical application of these PCR assays will be discussed.

1:30pm Telemedicine capabilities in swine medicine: a practical approach to solving telemedicine challenges in the field

Dr. Meredith Petersen, Post-Doctoral Research Associate, Swine Medicine Education Center (SMEC), Iowa State University

In veterinary medicine, telehealth techniques have the potential to provide increased surge capacity for veterinarians in an emerging disease outbreak, relief for veterinarians in the increasingly common shortage-areas, and increased caseload and mentorship of veterinary students and new veterinarians without an added biosecurity risk. This presentation describes four key challenges to adopting telemedicine and strides to address these opportunities.

1:40pm Monitoring swine pathogen detection using data from veterinary diagnostic laboratories

Dr. Guilherme Cezar, Graduate Research Assistant, Iowa State University

Swine Disease Reporting System: 2022-2023 trends of swine pathogen detection in the U.S using diagnostic data from veterinary diagnostic laboratories from the National Animal Health Laboratory Network.

1:50pm Salmonellosis in Pigs: An Update based on the ISU VDL Diagnostic Cases from 2012 to 2022

Dr. Marta Mainenti, Clinical Assistant Professor, Iowa State University Veterinary Diagnostic Laboratory

This study aims to provide an updated overview of salmonellosis in commercial pigs based on the diagnostic cases diagnosed with Salmonella sp. infection at the Iowa State University Veterinary Diagnostic Laboratory (ISU VDL) in the past decade.

2:00pm Panel Discussion

2:10pm The era of the endemics: Successful elimination of A. suis, M. hyosynoviae and M. hyorhinis

Dr. Perry Harms, Director of Health Assurance, PIC

Implementation of a medicated early wean program, combined with strict biosecurity and intensive surveillance for the elimination of A. suis, MHR and MHS.

2:35pm A cell culture adapted PEDV non-S INDEL strain is attenuated and protects against wild type challenge in piglets: Promising vaccine candidate?

Dr. Loni Schumacher, Clinical Assistant Professor, Iowa State University

This presentation describes the attenuation phenotypes and protection against wild type challenge in piglets using a non-S INDEL PEDV isolate that was serially passed up to 200 times in cell culture. Overall, the P200 strain appears capable of providing protective immunity and is a promising MLV vaccine candidate.

3:00pm Break

3:20pm Evaluate the protective efficacy of six commercial PRRSV MLV vaccines against the emergent PRRSV 1-4-4 L1C variant strain in weaned pigs

Dr. Jianqiang Zhang, Professor, Iowa State University

PRRSV-naive pigs at 3-4 weeks of age were used to evaluate the protective efficacy of six commercial PRRSV-2 MLV vaccines against the emergent PRRSV L1C variant strain. At 35 days post vaccination (DPV), all pigs were challenged with PRRSV L1C variant strain and all surviving pigs were euthanized and necropsied at 49 DPV (14 days post challenge [DPC]). Results will be presented.

3:45pm Assessing water biology: on farm sampling methods

Dr. Gabi Doughan, Post-Doctoral Research Associate, Iowa State University

This presentation will cover on why water is an underestimated biosecurity risk, introduce factors that contribute to water line biofilms in swine barns, and focus on methods in assessing water biology on farms.

4:10pm Using next generation sequencing for decision making with disease management and control

Dr. Joel Sparks, Veterinarian, AMVC

This is an overview to practitioner’s perspective and experience with next generation sequencing and how it may be used in the clinical setting with PRRSV.

Depopulation and Disposal Update Stephanie Wisdom, Director of Animal Welfare, National Pork Board

Concurrent session: Applied and Cases track

Moderators: Becca Walthart and Edison Magalhaes

1:10pm Neurosensory lesions related to PRRS

Dr. Alyona Michael, Clinical Assistant Professor, Iowa State University

1:20pm Anticoagulant Rodenticide Exposure in Pigs

Dr. Scott Radke, Clinical Assistant Professor, Iowa State University

Brief overview of anticoagulant rodenticide exposure in pigs that covers case descriptions, considerations when faced with exposures, and preventative measures.

1:30pm Ivermectin and PRRSV - does it actually work!?

Dr. Kimberly Crawford, Managing Veterinarian, VRI

This presentation will highlight the results of a blinded, controlled study measuring the efficacy of ivermectin administered to weaned pigs after a PRRSV 1-4-4 L1C challenge. Spoiler alert – there is more work that needs to be done to officially answer the question.

1:40pm Gilt Developer Units – A Biosecurity Investigation

Dr. Matt Ackerman, Private Practitioner, Pork Veterinary Solutions

When a disease break occurs in a unit, it is easy to chalk it up to bad luck and move on.  However, progress is made when we learn from our mistakes and take corrective action. In this presentation we will share some things we learned from a field investigation of a disease break situation at a Gilt Developer Unit.

1:50pm Conducting effective outbreak investigations: Web-based industry-standard outbreak investigation instrument

Dr. Derald Holtkamp, Professor, Iowa State University

Outbreak investigations are designed to learn where producers should devote time and effort, and where to prioritize the most significant biosecurity hazards on the farm. The only way to identify where those biosecurity hazards are is to be deliberate about the investigation. In 2021, the Swine Health Information Center funded the development of an industry-standard outbreak investigation instrument. In this presentation, a web-based version of the instrument to make it easy for veterinarians to use and to capture data from the investigations in a secure industry-wide database will be introduced.

2:00pm Panel Discussion

2:10pm Porcine Sapovirus: What is it, do my pigs have it and do I care?

Dr. Tom Petznick, Veterinarian, ArkCare

Porcine sapovirus has entered into the differential diagnosis list for diarrhea in mid to late lactation and the early nursery phase. We will cover its emergence, clinical signs, diagnostic methods, effects on production and mitigation steps. We will also delve into what we still don’t understand about the pathogen and its contribution to disease.

2:35pm Porcine Astrovirus 4 associated with tracheitis and bronchitis in weaned pigs

Dr. Mike Rahe, Assistant Professor, North Carolina State University

117 cases of influenza negative tracheitis and bronchitis in weaned pigs were evaluated for the presence of porcine astrovirus 4 within lesions using RNAscope. Here, we show a strong association between this emerging virus and respiratory disease in young pigs.

3:00pm Break

3:20pm How a poultry company deals with HPAI

Jose Rojas, Vice President Live Production, Hormel Foods (Jennie O)

3:45pm E.coli Genotyping

Dr. Marcelo Almeida, Clinical Assistant Professor, Iowa State University
Dr. Brent Sexton, Veterinarian, The Machhoffs

E. coli data from the ISU VDL will be used to uncover some trends regarding cases diagnosed at the ISU VDL and how that correlates with issues observed in the industry.

4:10pm Coccidiosis: diagnostic considerations and therapeutic strategies

Dr. Nicholas Gabler, Professor, Iowa State University
Dr. Eric Burrough, Professor, Iowa State University

This presentation will discuss recent developments in diagnostic tools for porcine coccidiosis and compare novel and traditional therapeutics.

4:35pm Utilizing NGS for Strep. suis Vaccine Selection

Dr. Rebecca Robins, Veterinarian, PIC
Dr. Lauralyn Harper, Veterinarian, Tyson Foods

Review of how Next Gen Sequencing has affected the decision making process for vaccine selection & vaccine protocols. Outline of the clinical approach since using NGS.

5:00pm Conference adjourns

5:30pm ISU Networking Social

Hansen Agriculture Student Learning Center