Podcasts about prrsv

Monitoring PRRS virus can happen perfectly well using tongue fluids, a topic that won a recent European PRRS Research Award. Pig Progress Editors Vincent ter Beek and Iris Hofman will discuss this technique with Dr. Andrea Ladinig, professor at the University of Veterinary Medicine in Vienna, Austria.

There is no right answer when it comes to porcine reproductive and respiratory syndrome, but controlling the virus in the early days requires PRRSv herd stabilization and herd closure to be part of the conversation. In this episode, Dr. Paul Yeske, Swine Vet Center, walks us through different strategies producers can use in the field to control and eliminate PRRS L1C. Our Ann Hess sat down with Dr. Yeske at this past weekend's PRRS conference in Chicago, IL.This episode is sponsored by United Animal Health, a leader in animal health and nutrition. You can learn more about United Animal Health and how they are working to advance animal science worldwide by visiting the website at UnitedANH.comFor more information on this and other topics, we invite you to visit our websites - www.beefmagazine.com, www.Feedstuffs.com,  and www.NationalHogFarmer.com.  

Welcome back to the program, Dr. Scott Dee! Today, we're delving into groundbreaking research that has uncovered new dimensions in the transmission of porcine reproductive and respiratory syndrome virus (PRRSV). Here are the top 5 highlights from this significant study: New Knowledge Unveiled: Identification of a New Risk Factor: Dual Phases for Robust Outcomes: Support for Feed Mitigants: Event Frequency Insights:

SwineCast 1244 Show Notes: The Swine Disease Reporting System shares aggregate data from participating veterinary diagnostic laboratories (VDLs) in the United States of America. Plus Dr. Thomas Petznick (ArkCare) joins the conversation on the PRRSV scenario in Nebraska, enteric coronavirus biosecurity strategies, and Sapovirus epidemiology. This SwineCast episode shares the most recent report number 66, …

SwineCast 1242 Show Notes: The Swine Disease Reporting System team discusses the project’s new developments funded from the USDA’s National Institute of Food and Agriculture (NIFA). New developments include monitoring new PRRSV variants, traceability of pathogen co-detections, and SDRS representativeness. This SwineCast episode shares the most recent report number 65, that can also be found …

SwineCast 1231 Show Notes: SwineCast 1231 Show Notes: “Doing what we know how to do” is the best next step in efforts to eliminate PRRSv from the U.S. herd. The At The Meeting team presents a clear agenda in its continuing conversation with Dr. Scott Dee (Retired Director of Applied Research, Pipestone Veterinary Services) and …

SwineCast 1231 Show Notes: “Doing what we know how to do” is the best next step in efforts to eliminate PRRSv from the U.S. herd. The At The Meeting team presents a clear agenda in its continuing conversation with Dr. Scott Dee (Retired Director of Applied Research, Pipestone Veterinary Services) and Dr. Reid Philips (PRRS …

SwineCast 1230 Show Notes: Decades of hard work have produced a wide assortment of tools to fight the spread of PRRSv. Success and failure and no silver bullets have discouraged many – leaving the impression that the PRRSv cannot be eliminated. The At The Meeting team documents how far the pig industry has come with …

SwineCast 1230 Show Notes: Decades of hard work have produced a wide assortment of tools to fight the spread of PRRSv. Success and failure and no silver bullets have discouraged many – leaving the impression that the PRRSv cannot be eliminated. The At The Meeting team documents how far the pig industry has come with …

There are a number of health challenges that are prevalent in pig production – and we know that biosecurity is the name of the game when it comes to disease prevention. Some diseases seem to evade even the strongest biosecurity plans and this can be frustrating for producers and their veterinarians as they try to achieve optimum care for their herds. Porcine respiratory and reproductive syndrome is a disease that has circulated in the swine world for years – however a recent highly pathogenic strain of this virus is challenging pig herds. Dr. Doug MacDougald, a swine veterinarian working out of Southwest Ontario Veterinary Services has worked with producers in North America who have experienced outbreaks of this highly pathogenic PRRS strain – 144 Lineage 1C – and shares some case studies and practical tips for disease prevention. Links of Interest: Resources for PRRS strain 144-1c outbreaks from Swine Health Information Centre Highly pathogenic PRRSV 1-4-4 L1C variant: emergence, sources, and implications to the global industry. by Daniel Linhares, Giovani Trevisan, and Gustavo Silva at Pig333.com Emergence of a New Lineage 1C Variant of Porcine Reproductive and Respiratory Syndrome Virus 2 in the United States.  Kikuti Mariana, Paploski Igor A. D., Pamornchainavakul Nakarin, Picasso-Risso Catalina, Schwartz Mark, Yeske Paul, Leuwerke Brad, Bruner Laura, Murray Deborah, Roggow Brian D., Thomas Pete, Feldmann Lori, Allerson Matt, Hensch Melissa, Bauman Tyler, Sexton Brent, Rovira Albert, VanderWaal Kimberly, Corzo Cesar A. Emergence of a New Lineage 1C Variant of Porcine Reproductive and Respiratory Syndrome Virus 2 in the United States. Frontiers in Veterinary Science, Vol. 8, 2021.  Swine Health Information Center, AASV and Iowa State University Seminar on Emerging PRRS Strains and Rosalia Feb. 21, 2023

Welcome to this episode of Feedstuffs Swine Healthline, brought to you by Pharmgate Animal Health and focused on writing and executing effective swine health protocols.One aspect of the job as a swine veterinarian is helping your customers or your teams develop and write swine health protocols. No matter how good the protocol, it won't work to protect pigs if the steps aren't being executed in the barn, at the truck wash or on the road between farms. Are you confident your protocols are being accurately executed? How do you know? Today's guest spends much of his time helping pork production systems answer those questions. Dr. Jerome Geiger is a health assurance veterinarian with Pig Improvement Company. Dr. Geiger has seen plenty of cases in which biosecurity protocols were executed differently than they were written. He will explain four strategies you can use to ensure your protocols work as well in real life as they do on paper. And, he will share what he thinks is the most important piece of successful swine health protocols.This is the last in a four-part podcast series about Swine Respiratory Disease Complex brought to you by Pharmgate Animal Health. Call your Pharmgate representative or visit pharmgate.com to learn about their broad portfolio options to support your swine health protocols. Download the other podcasts in the series to learn about the latest research in PRRSV cases, the challenges posed by endemic bacterial agents in swine facilities and advice when considering disease elimination from a system or pig flow.

Dr. Kim VanderWaal, Associate Professor at the University of Minnesota and Dr. Dennis Makau , Post-Doctoral Associate also at the University of Minnesota join us to talk about the knowledge gaps existing for swine producers and veterinarians regarding PRRS genomic classification, cross protection and immune stimulation. Dr. VanderWaal's research focuses on the dynamics of pathogen spread through animal populations with focus on quantifying the drivers of host and pathogen heterogeneity for disease transmission. Dr. Makau expertise is similarly in epidemiology, focusing on statistical and phylodynamic modeling as well as machine learning techniques to understand the epidemiology of PRRSv. For years veterinarians and producers alike have been baffled by our inability to explain PRRSv cross protection across isolates. We sequence new PRRSv isolates and compare them to other isolates in our collective databases. We use these comparisons to help make informed projections on new PRRSv outbreaks as well as assessments as to whether a new PRRSv isolate has entered a herd. Practicing swine veterinarians throughout the world are often frustrated by our inability to make good assessments with this data. We have situations where the virus is 99% the same as other isolates yet the clinical response is wildly different. We also have situations where the isolates are wildly different, yet the clinical signs and performance impacts suggest that a high level of cross protection exists. Dr. Kim and Dr. Dennis's current research focus is in using immunologic assays to assess the level of cross protection various PRRSv isolates can provide, then using computer models and machine learning to highlight the commonly held portions of genomes from "unique" isolates that appear to cross protect more or less than their peers. The goal of their research is to better understand which portions of the PRRSv genome are most important in stimulating immunity and to eventually provide a tool to producers to help project cross protection across PRRSv sequence comparisons.

SwineCast 1204 Show Notes: The Swine Disease Reporting System team chats with special guest Dr. Guilherme Cezar about new features and next steps for the Swine Disease Reporting System. They also review increased PEDV activity among the US states, and PRRSV activity in the US, looking at lineages and regional spikes. This SwineCast episode shares …

Maintaining a high health status on our farms is essential for good production outcomes. Dr. Corzo talks about the Swine Health Monitoring Program and how it has been given pieces of information on PRRSV, PEDV, and other diseases. This monitoring helps minimize disease spreading and supports farmers' decisions. Have you heard about the Program before? *Watch the full episode: https://www.swinecampus.com/blog ------------- The Swine it Podcast Show is trusted and supported by innovative companies like: - Zinpro (https://zinpro.com/) - Gestal (http://jygatech.com/) - AB Vista (https://www.abvista.com/) - Adisseo (http://www.adisseo.com/) - Genesus (https://www.genesus.com/) - Evonik (https://animal-nutrition.evonik.com/en/species/swine/) Give us a Rating & Review - http://getpodcast.reviews/id/1460280128

Every year there is some form of disease outbreak in swine herds across the US. Whether it is PRRSV, PEDV, or something else, we need to make sure that we are doing everything in our power to maintain a high health status on our farms. In this episode, I talk with Dr. Cesar Corzo about his work on his Swine Health Monitoring Program about ways we can minimize the spread of diseases to other farms, and how to more effectively keep our farms disease free. "

Dr. Yeske, a swine veterinarian with over 30 years of experience, has been recognized for his disease management and elimination work. He talks about the most prevalent PRRSV strains we have seen and their particular time frame. Have you had incidences of other strains in your herd?

Guests: Dr. Charlie Elrod, Natural Biologics and Dr. Josh Jackman, Tropical Innovations/Sungkyunkwan UniversityCo-host: Dr. Ken Sanderson, BalchemToday's podcast tackles a big topic in the global swine industry - African Swine Fever Virus (ASFV). This virus has recently been reported in Thailand and continues to spread throughout the globe. While North America looks for any sign of ASFV, it continues to struggle with other lipid-enveloped viruses as well. Dr. Josh Jackman states that over 80% of livestock and human population epidemics and pandemics are caused by lipid enveloped viruses, making it of huge economic significance. (14:31) Dr. Charlie Elrod spoke of balancing the need for that macrophage recruitment and fighting the infection versus keeping them away. By tamping the virus down, or reducing the viral load that results in fewer macrophages getting infected, and fewer virus particles surviving in the mucosal environment, then you've improved. (27:02)Dr. Josh Jackman explains that you need more than one hole in a virus membrane to become inactive or broken down. The structural damage is really important to break the structural integrity of the virus particle. Another mode to prevent infection is with compounds that prevent the viral membranes from fusing with cellular membranes. (33:09) Dr. Charlie Elrod mentions that when feeding GML to sows, it does get into the milk circulation and can have a positive effect on piglets in the form of antimicrobial, antiviral and anti-inflammatory activity. Being able to mitigate risks to the most susceptible neonatal animals would be a good thing. (47:01) Dr. Josh Jackman adds that there is an association between higher GML levels and reduced disease severity. The potential is huge because GML targets lipid enveloped viruses broadly. Since you can't predict which virus will cause the next outbreak, GML is something that has the potential to be a first-line counter measure to the next pandemic. (57:27)Dr. Charlie Elrod closes by saying there is a lot of potential discoveries out there.We need to continue exploring and bring in different sources of genetic mechanisms or more specific mechanisms like a flavonoid. This is really just the first chapter. (1:14:37)If you want one of our new Real Science Exchange t-shirts, make sure to screenshot your rating, review, or subscription, and email a picture to anh.marketing@balchem.com. Include your size and mailing address, and we'll get a shirt in the mail to you. Please subscribe and share with your industry friends to bring more people to join us around the Real Science Exchange virtual pub table.  This podcast is sponsored by Balchem Animal Nutrition and Health.

Uno de los grandes desafíos que enfrentamos en la producción porcina, está relacionado con la salud de los cerdos. Las enfermedades infecciosas virales generan impactos económicos devastadores y su control efectivo es motivo de gran preocupación para la comunidad científica que trata de dar respuestas. El Circovirus Porcino 3 (PCV3), es un virus que se detectó en animales que mostraban fallo reproductivo, inflamación multisistémica y síndrome de la dermatitis y nefropatía porcina (PDNS); desde entonces, se ha encontrado en cerdos de todo el mundo, con o sin manifestaciones clínicas; y a pesar que existen algunas vacunas, es necesario seguir investigando para determinar una clara definición de caso y su impacto económico. Los que vas a aprender: ¿Qué sabemos sobre la infección por Circovirus Porcino 3 (PCV3)? Relación con el Circovirus porcino tipo 2 (PCV2). Importancia de la genotipificación en el control efectivo de este agente. Aspectos claves sobre la vacunación para PCV2. ¿Qué desafíos nos trae la presentación subclínica? Nuestro Invitado: El Dr. Pablo Piñeyro es un reconocido investigador en diagnóstico patológico en la industria porcina. Se tituló como Médico Veterinario en la Universidad de La Plata en Argentina, para luego realizar una maestría en Ciencias Veterinarias en Washington State University y un doctorado en el mismo campo, en la Universidad de La Plata. También cuenta con un doctorado en Ciencias Biomédicas en el Virginia Polytechnic Institute and State University. Actualmente se desempeña como profesor asociado y patólogo en Iowa State University, donde realiza intensa investigación sobre PCV2, PCV3, PRRSV y IAV.

Eliminating porcine reproductive and respiratory syndrome virus (PRRSV) from pigs might not yet be possible, but monitoring tools could help refine a herd's PRRSV stability. The post Virus persistence challenges PRRS management strategies appeared first on Pig Health Today.

In partnership with Boehringer Ingelheim Animal Health USA Inc., Pipestone Research has provided a rapid response to bring science-based answers to managing the emergence of PRRSV 144. Join SwineTime Podcast host, Dr. Spencer Wayne, Veterinarian, as he discusses the trial results with Dr. Scott Dee, Director of Research at PIPESTONE. Joining Dr. Dee is Dr. Cesar Corzo, AD Leman Chair at the University of Minnesota CVM. This timely topic in swine medicine will cover the impact of MLV vaccines, the impact of utilizing biosecurity practices and what producers can do today to reduce the impact of this new virus. PIPESTONE's mission is "Helping Farmers Today Create the Farms of Tomorrow." The SwineTime podcast was created for pig farmers and individual pork producers around the country. Hosted by Dr. Wayne, the podcast contains pork industry news, advancements in animal care and how to enhance your productivity. Monthly podcasts are available on Spotify, Google Music, ITunes, Anchor and on Pipestone.com.

Dr. Jon Ertl, from Sioux Nation Ag Center, talks Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) in pig meat and what you should know.

The system used to classify breeding herds according to their PRRSV status has long helped swine veterinarians around the world to track the pathogen's progress. The post Revised herd classifications expand the PRRS road map appeared first on Pig Health Today.

SwineCast 1163 Show Notes: This is the Swine Disease Reporting System update number 42. In this Swine Disease Reporting System update, Dr. Edison Magalhaes, Dr. Giovani Trevisan, and Dr. Daniel Linhares dive into PRRSv whole-herd monitoring & call for action in grow-finish. This SwineCast episode shares the most recent report number 42, that can also …

SwineCast 1163 Show Notes: This is the Swine Disease Reporting System update number 41. In this Swine Disease Reporting System update, Dr. Edison Magalhaes, Dr. Giovani Trevisan, and Dr. Daniel Linhares dive into PRRSv whole-herd monitoring & call for action in grow-finish. This SwineCast episode shares the most recent report number 41, that can also be found at http://agtoday.us/swine-reports

Miguel Ángel Higuera entrevista a Jordi Baliellas (veterinario en Associació Porcsa. GSP Lleida)sobre el virus PRRSV. Conocemos sus características, su tasa de mutación, variabilidad genética y mucho más. Contenido técnico explicado de la manera más dinámica. ¡No te lo pierdas!Presentadores: Miguel Ángel Higuera y Jordi BaliellasPara cualquier comentario o duda, nos puedes mandar un mensaje de voz al +34 603 52 68 59

Miguel Ángel Higuera entrevista a Jordi Baliellas (veterinario en Associació Porcsa. GSP Lleida)sobre el virus PRRSV. Conocemos sus características, su tasa de mutación, variabilidad genética y mucho más. Contenido técnico explicado de la manera más dinámica. ¡No te lo pierdas!Presentadores: Miguel Ángel Higuera y Jordi BaliellasPara cualquier comentario o duda, nos puedes mandar un mensaje de voz al +34 603 52 68 59

On today's episode, John Ratzenberger sits down with Elanco's Dr. Jessica Risser to discuss how swine producers and swine veterinarians have been battling PRRS since the earlier 1990's.  The goal has been to control, manage, and eradicate the virus from all herds.  Today we will visit the latest information about PRRS, and the advances being made. Join us for this week's episode of Nutra Blend's Animal Agriculture podcast! 

SwineCast 1155 Show Notes: This is the Swine Disease Reporting System update number 40. In this Swine Disease Reporting System update, Dr. Edison Magalhaes, Dr. Daniel Linhares, and Dr. Giovani Trevisan invite special guest Dr. Paul Yeske, Swine Vet Center, to share his experiences on PRRSv & more. This SwineCast episode shares the most recent report number 40, that can also be found at http://agtoday.us/swine-reports

Dr. Andrea Ladinig hat Veterinärmedizin am Campus studiert und neben dem Doktorat auch die Ausbildung zum Diplomate im Fach Schweinemedizin an der Vetmeduni Vienna abgeschlossen. Durch einen mehrjährigen Auslandsaufenthalt hat sich Ladinig internationale Fachkenntnisse in der Infektionsmedizin beim Schwein angeeignet. Als Spezialistin für Krankheiten wie PRRSV ist sie seitdem in zahlreichen Projekten involviert. Wir sprechen über das Arbeitsfeld einer Professorin in der Schweinemedizin, aktuelle Seuchen und die Zukunft der Schweinehaltung. Kontakt Wuide Goas:Blog: https://wuidegoas.com/Mail: servus@wuidegoas.comInstagram: @wuidegoas_tiermedizinFacebook: @wuidegoasTikTok: @tiermedizin_bywuidegoasMelde dich zum WhatsApp-Service an. Du kriegst etwa eine Nachricht pro Woche. Ich schreibe dir, wenn neue Folgen da sind - und welche ich für die Zukunft plane. Du hast einen Vorschlag oder Fragen zu einem Thema? Schreib mir einfach eine Nachricht auf WhatsApp!Die Anmeldung zum Service dauert weniger als eine Minute. So geht's: Füge die Nummer +49 15 25 21 26 457 zu deinen Kontakten hinzu und schick mir eine WhatsApp-Nachricht mit dem Text “Servus”. Damit erklärst du dich einverstanden, dass ich deine Nummer speichere. Deine Daten behandle ich natürlich vertraulich. Du kannst dich jederzeit mit "Stop" wieder abmelden. Das war's.Ich wünsche dir nun viel Spaß beim Hören!----------------------------------------------------------------------Life by Roa https://soundcloud.com/roa_music1031Creative Commons — Attribution 3.0 Unported — CC BY 3.0Free Download / Stream: https://bit.ly/_-lifeMusic promoted by Audio Library https://youtu.be/dXqEepAme-M 

Eliminating porcine reproductive and respiratory syndrome virus (PRRSV) from pigs might not yet be possible, but monitoring tools could help refine a herd's PRRSV stability. The post Virus persistence challenges PRRS management strategies appeared first on Pig Health Today.

Since its introduction in 2011, the system to classify breeding herds according to their porcine reproductive and respiratory syndrome virus (PRRSV) status has provided swine veterinarians and producers with a well-defined common language. So much so that the system has been adopted worldwide by veterinarians, producers and researchers alike. 

The system used to classify breeding herds according to their PRRSV status has long helped swine veterinarians around the world to track the pathogen’s progress. The post Revised herd classifications expand the PRRS road map appeared first on Pig Health Today.

Swine veterinarians and producers alike would relish eliminating porcine reproductive and respiratory syndrome virus (PRRSV), but achieving elimination on a routine basis in commercial herds is not yet a reality. The key problem is that, unlike most viruses, PRRSV causes a persistent infection in pigs — which is often difficult to detect.  “In terms of profitability and animal welfare, we would like pigs to clear the virus as quickly as possible,” Marcelo Almeida, postdoc research associate, Veterinary Diagnostic Laboratory at Iowa State University, told Pig Health Today. However, there are many factors sabotaging that goal. 

SwineCast 1142 Show Notes: This is the Swine Disease Reporting System update number 35. Experts from Veterinary Diagnostic Laboratories of Iowa State University, University of Minnesota, Kansas State, and South Dakota State University, provide a regular update on swine diseases and seasonal issues of importance for producers. In this Swine Disease Reporting System update, Dr. Edison Magalhaes, Dr. Daniel Linhares, Dr. Giovani Trevisan, along with special guest Dr. Deborah Murray with New Fashion Pork, discuss PRRSv and PEDv strategies and lessons learned. This SwineCast episode shares the most recent report number 35, that can also be found at http://agtoday.us/swine-reports

“If you want nutrition to be an important tool, you have to make sure that the other areas of your production are also up to snuff. So, are you maintaining a clean and comfortable environment? Are you sourcing healthy pigs to start? What are their pre-weaning environment, and what are they coming in with? Am I reducing the pathogen load there, so they're not bringing it with them into the barn? Are they stressed coming into the barn?” – Dr. Brooke Smith What you will learn: Biggest misconception on the immune system; Host immune response to PRRSV; Soybean meal and soy bioactive compounds; Soybean and total lysine requirement; Biggest learnings from Dr. Jim Lowe; Causes of mortality; Animal disease research; People with no agriculture background; Empathy in livestock production. Meet the guest: Dr. Brooke Smith is an Animal Scientist and she is currently a dual DVM/Ph.D. student through the Veterinary Medical Scholars Program at the University of Illinois. Her Ph.D. research is focused on the applications of dietary soy bioactives and their immunomodulatory actions on the immune response in disease-challenged swine.

“It is feasible to do it in a year, but we are going to be busy!” In 2020, Boehringer Ingelheim has sponsored its latest annual European PRRS Research Awards which offer 25,000 Euros towards the funding of each of three research projects that are potentially of practical benefit in controlling PRRS. Hear the winners of the 2020 Awards describe the research they propose, given the time limit of completing the work in one year. A practitioner-led project in Denmark is to examine the impact of piglet weaning strategies on PRRSv in the nursery. An international team led from The Netherlands will use whole-genome sequencing to investigate genetic recombination in type-1 PRRS viruses. And, a study in Spain aims to measure how biosecurity measures against PRRS relate to the physical performance and profitability of commercial swine farms. Running time: 30 minutes

SwineCast 1121 Show Notes: This is the August update from the Swine Disease Reporting System. Experts from Veterinary Diagnostic Laboratories of Iowa State University, University of Minnesota, Kansas State, and South Dakota State University, provide a regular update on swine diseases and seasonal issues of importance for producers. In this Swine Disease Reporting System update, Dr. Daniel Linhares and Dr. Giovani Trevisan discuss with special guests Dr. Roger Main (Iowa State University) and Dr. Jerry Torrison (University of Minnesota) the background to bring consistency to the data generated from all the veterinary diagnostic laboratories. The groups also reviews the PRRSv data and trends observed. This SwineCast episode shares the most recent report for August 2020, that can also be found at http://agtoday.us/swine-reports

Protecting your swine against PRRSV may be as simple as letting them pig out on soybeans. RFD’s DeLoss Jahnke shares a few minutes of U of I associate professor Ryan Dilger's time to learn about his recent research on isoflavones.For more information regarding this podcast or to share a story with the RFD Radio Network, contact Patti Penn at ppenn@ilfb.org or 309-557-3286.

In this episode, Feedstuffs editor Sarah Muirhead talks with Dr. Scott Dee of Pipestone Applied Research about a demonstration project conducted to evaluate viral survival in feed. A demonstration project is a new way of taking what has been learned in the lab and running a trial under more real-world conditions. In this case, Dee took samples of soybean meal, conventional and organic, lysine, choline and vitamin A that were all spiked with a mixture of PRRSV 174, PEDV and SVA and transported for 21 days in a trailer of a commercial transport vehicle. Samples were then tested for viral genome and viability at the end of the transit period. The demonstration project showed that three significant viral pathogens of pigs could survive in select feed ingredients during commercial transport, involving diverse environmental conditions and realistic transit period. Dee talks about the project and the results. This episode is sponsored by Hog Slat; from cleanup to startup, we're here to supply the products you need.  As close as your local Hog Slat store or order online at www.hogslat.com.  Related Feedstuffs article: Time to get personal: Consumer outreach may help protect animal agriculrue in next crisisFor more information on this and other stories, visit Feedstuffs .com.Follow Feedstuffs on Twitter @Feedstuffs, or join the conversation via Facebook.   

On today's episode, John Ratzenberger sits down with Kemin's Technical Services Manager, Dr. Tom Marsteller. They discuss how beta glucans have been used in humans and livestock to enhance host protective immunity. Minimizing the impact of disease challenges early on in an animal’s life can improve its ability to gain weight faster, increase feed efficiency and reduce its likelihood to spread disease. They will also review outcomes from a PRRSv-positive nursery trial and demonstrate applicability across other species. Join us for this week's episode of Nutra Blend's Animal Agriculture podcast!

“The science that shows viruses can live in the feed has being replicated so many times, over some many different viruses. I think that’s 100% science, there’s no question about that. But there are quite a few things we don’t understand yet, so there’s quite a bit of art.” – Dr. Scott Dee What you will learn: - A brief history behind feed biosecurity; - The biggest learnings from recent times; - Minimizing risk in imported products; - The 80/20 rule of feed biosecurity; - Art or science? - The biggest changes in feed mills from a practical standpoint in the last few years; - The range of feed biosecurity around the globe and what can be done better to reduce everyone’s risk. Our guest is Dr. Scott Dee. Dr. Dee earned his DVM, MS, and Ph.D. from the University of Minnesota. He is a board-certified veterinary microbiologist and a past President of the AASV. After working in swine practice for 12 years, Scott was a Professor at the University of Minnesota College of Veterinary Medicine where he focused his research on the transmission and biosecurity of PRRSv for 12 years. In 2011, Scott joined Pipestone Veterinary Services in Pipestone, MN where he currently serves as Director of Pipestone Applied Research. This episode was edited and published by Lauro Faccin.

“[…] There was no collaboration, tremendous conflict of interest and led to the quotation from the late Dr. Mike Murtaugh that “veterinary science is an oxymoron”. That was clearly true. It was very depressing. I am glad that has improved and we have seen improvement across many fronts.” – Dr. Scott Dee. Today’s episode will cover “Swine veterinary applied research: the last 30 years and what the future holds”. Our guest is Dr. Scott Dee. Dr. Dee earned his DVM, MS, and Ph.D. from the University of Minnesota. He is a board-certified veterinary microbiologist and a past President of the AASV. After working in swine practice for 12 years, Scott was a Professor at the University of Minnesota College of Veterinary Medicine where he focused his research on the transmission and biosecurity of PRRSV for a 12-year period. In 2011, Scott joined Pipestone Veterinary Services in Pipestone, MN where he currently serves as Director of Pipestone Applied Research. What you will learn: History of swine veterinary research in the last 30 years; Biggest lessons learned; Common mistakes that you see in today’s research; Veterinary epidemiology experience, could it help in the COVID-19 situation? Swine vet research going in the next 5 to 10 years; What separates successful swine professionals from those that are not. Scott’s favorite poultry-related book: Winnie-The-Pooh Scott’s favorite book in general: All Creatures Great And Small This episode was edited and published by Lauro Faccin. Best regards, Márcio Gonçalves, DVM, PhD

PRRSV is constantly evolving, resulting in an extremely diverse virus with multiple lineages, but building a better understanding of that genetic diversity is the next step to making real progress against the disease. The post Outmaneuvering PRRSV requires a better understanding of genetic diversity appeared first on Pig Health Today.

PRRSV is constantly evolving, resulting in an extremely diverse virus with multiple lineages, but building a better understanding of that genetic diversity is the next step to making real progress against the disease. The post Outmaneuvering PRRSV requires a better understanding of genetic diversity appeared first on Pig Health Today.

Welcome back to another episode of the Agweek Podcast! In our third episode, we'll dive deeper into a few stories from Agweek Magazine and AgweekTV including: a Mikkel Pates story about the North Dakota Farmers Union's new children's book about farmers with a modern twist, an update on the Ashby co-op manager case and creditor restitution, Jonathan Knutson reports on an interesting University of Minnesota research study on PRRSV (porcine reproductive and respiratory syndrome virus in pigs) and a Michelle Rook story on milk prices reaching break-even levels. Our guest this week is Rodie Jelleberg, grain dryer specialist and customer service manager at Superior Grain Equipment in Kindred, ND.

Oral-fluid sampling can provide a simple, reliable way to surveil for porcine reproductive and respiratory syndrome virus (PRRSV), Marisa Rotolo, DVM, of Iowa State University, reported at the 2017 AASV conference. The post Taking oral-fluid samples for PRRS: How many and when? appeared first on Pig Health Today.

Oral-fluid sampling can provide a simple, reliable way to surveil for porcine reproductive and respiratory syndrome virus (PRRSV), Marisa Rotolo, DVM, of Iowa State University, reported at the 2017 AASV conference. The post Taking oral-fluid samples for PRRS: How many and when? appeared first on Pig Health Today.

It takes 3 to 4 weeks for pigs to develop immunity against PRRSV after vaccination with a modified-live vaccine, so vaccinating early gives them the time they need to develop immunity by nursery age, says Keith Aljets, DVM, Veterinary Medical Center, Williamsburg, Iowa. The post Iowa veterinarian sees benefits to early PRRS vaccination appeared first on Pig Health Today.

Sat, 31 Jan 2015 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/18022/ https://edoc.ub.uni-muenchen.de/18022/1/Adam_Lukas.pdf Adam, Lukas

Das porzine reproduktive und respiratorische Syndrom Virus (PRRSV) wird bis 42 Tage über den Speichel übertragen. Aus diesem Grund wurde in den USA der Nachweis PRRSV-spezifischer Genomfragmente und Antikörper aus Speichelproben der Schweine entwickelt. Ziel dieser Arbeit war, Speichelproben als alternatives Probenmaterial für den Nachweis einer PRRSV-Infektion zu etablieren. In der vorliegenden Studie wurde der Nachweis PRRSV-spezifischer Genomfragmente und Antikörper in Serum- und Speichelproben untersucht. Für die Adaptation des molekularbiologischen Nachweises PRRSV-spezifischer Genomfragmente wurde PRRSV-negativer Speichel mittels zwei Entnahmesystemen gewonnen und Virus zugesetzt. Der Einfluss von Lagerungszeit und -temperatur des Speichels wurde überprüft. Im Rahmen der Überwachung des PRRSV-Status durch den Steirischen Tiergesundheitsdienst wurden insgesamt 539 Serumproben und 58 Speichelproben aus vier steirischen schweinehaltenden Betrieben auf das Vorhandensein PRRSV-spezifischer Genomfragmete und Antikörper untersucht. Es konnten über 72 Stunden PRRSV-spezifische Genomfragmente im Speichel nachgewiesen werden. Die höchste Anzahl genomischer Kopien / ml konnten bei einer Lagerungstemperatur von 4-10°C nachgewiesen werden. Nach einer 30-minütigen Strickexposition haben im Mittel 75,9-79,4 % der Tiere in der 7./8. Lebenswoche am Stick gekaut. Die untersuchten Serum- und Speichelproben hatten eine annähernd vollständige und signifikante Übereinstimmung (κ = 0,829; p < 0,001) im Nachweis PRRSV-spezifischer Antikörper. Der Nachweis PRRSV-spezifischer Genomfragmente in den Serum- und Speichelproben zeigte eine ausreichende, aber nicht signifikante Übereinstimmung (κ= 0,347, p > 0,05). Die mittlere Seroprävalenz lag zwischen 36 % in der Zuchtsauenherde und 67 % in der Aufzucht. Die durchschnittliche Virusprävalenz variierte zwischen 1 % in der Zuchtsauenherde und 36 % in der Aufzucht. Die mittlere Virusprävalenz der gewonnenen Speichelproben lag bei 30 % und die Mittlere Seroprävalenz lag bei 83 %. Die daraus resultierende Stichprobengröße variierte zwischen 95 Proben für den Nachweis viraler RNA in der Zuchtsauenherde und 3 zum Nachweis PRRSV-spezifischer Antikörper in Speichelproben. Die Ergebnisse der vorliegenden Studie zeigten, dass PRRSV eine höhere Sero- und Virusprävalenz in der Aufzucht hat. Der Einsatz von Speichelproben zum Nachweis PRRSV-spezifischer Antikörper und Genomfragmente stellt eine sinnvolle Ergänzung des Nachweises einer PRRSV-Infektion dar.

SwineCast 0743 Show Notes: Dr. Bob Morrison and The Morrison Group follow up on an earlier discussion related to herd closure as a option in eliminating PRRS in an operation.  Now, the data from a recent research project fills in the gaps on this episode of "At The Meeting". Daniel Linhares "How Long Does It Take Herd To Produce PRRS-Negative Piglets" Powerpoint Slides Daniel Linhares Text Release "How Long Does It Take Herd To Produce PRRS-Negative Piglets".

The goal of this study was to examine the suitability of five disease agents that are essential in swine production, in a health monitoring program. Not only the selected disease agents and the diagnostic methods were examined but also the sample size. Four market trading companies from Lower Saxony and Schleswig-Holstein provided 38 farrowing farms for the study, and sampling was done on a quarterly basis. Fifteen blood samples were taken from sows every time and serologically examined for Salmonella and in one quarter only PCV2 was tested. A total of fifteen blood samples from feeder pigs were serologically examined for Salmonella in the first and second quarter. In the course of the following testings, instead of blood probes 20 faecal samples were pooled to create four samples which were bacteriologically examined. Additionally, 30 blood probes from three growing stages were examined for antibodies against PCV2 using Ingezim PCV IgG/IgM ELISA. Twenty nasal swabs were pooled to create four samples that were tested for the EU and US strains of PRRSV. Furthermore, the four pooled faecal samples were examined for Brachyspira spp. using Multiplex-PCR, and the probes from the first two quarters were also examined for Campylobacter spp.. The farms were assigned into one of four categories, 0 to 3, based on their results from the serological examination for Salmonella and similar to those of the Salmonella VO and QS. Based on the sow results, 10.8% of the farms were in the category 0, 67% in the category 1 and the rest of the farms fell into the categories 2 and 3. Feeder pigs from three farms were placed in the category 1 and the rest were assigned the category 0. In the following bacteriological examination, Salmonella was identified in ten farms. The bacteriological examination method was better in the flatdeck when compared to the serological method. The serological examination of the sows proved to be effective for a health monitoring program. Antibodies for PCV2 were found in the sows in all farms, which confirms its ubiquitous distribution. No seroconversion could be identified in the weaner-to-feeder pigs in 10 farms. Many farms began piglet vaccination during the project. It was noted that the vaccination influenced the results of the Ingezim ELISA in these farms and that an examination is not necessary. This test can be well implemented in a monitoring program in farms that do not vaccinate. However, this test also identifies maternal antibodies and this needs to be taken into consideration when interpreting results. B. hyodysenteriae could not be identified in any farms. Other Brachyspira species that occur in swine could not be identified with the exception of B. innocens that was found in two farms. PCR appears to be a suitable diagnostic tool for a health monitoring program. The examination for Campylobacter spp. showed a wider distribution of C. coli, and 89.4% of the farms tested positive. C. jejuni could only be found as a coinfection with C. coli in one farm. In four farms, no Campylobacter sp. could be identified. In this case, PCR is also suitable for examining faecal samples. The outcome of the PRRSV examination showed highly differing results in every test period. 78.9 % of the farms altered their status during the project. This infers that the sample size was inadequate in order to determine the actual status of the farm. Moreover, a significant correlation between vaccine strain and the PCR results was observed. The PCR only differentiated between both genotypes but not between field and vaccine strains. However, a differentiation is advisable for a health monitoring program. Alternatively, the examination for PRRSV-free nucleus farms could be restricted and simply the vaccine status could be documented in other production units.

The aim of this study was to describe the serological course of H. parasuis in three farms during a present coinfection with M. hyorhinis, PRRSV and PCV2. The examinations occurred in three breeding farms and their complementary finishing units. A clinical examination and blood sampling was done in regular two-week intervals of animals from the 1st to the 11th week of life and the same was done with animals between the 14th and 22nd week of life but in four-week intervals. Furthermore, blood samples were taken from sows in the first week after farrowing. The detection of antibodies against H. parasuis, M. hyorhinis, PCV2 and PRRSV was done using ELISA. The increased lameness that was seen in farm 1 from the 14th week of life was due to H. parasuis because of a simultaneous occurrence in the rise of the antibody titer and the seroprevalence for H. parasuis. In the second and third farm, H. parasuis probably played a role as a cofactor in the porcine respiratory disease complex (PRDC). A correspondent increase in the age of the animals and the clinical scores could be detected for all three farms. In addition, an increase in the occurrence of multiple infections was observed during the finishing period. Double and single infections were present in most of the examined animals, and PCV2 was involved in all cases. Antibodies against PCV2 were found in all animals at the end of the finishing period. A significant association was detected for the mutual occurrence of H. parasuis and PCV2 in the 18th week of life. A synergism of both agents cannot be fully ascertained because of the time at which the significant mutual detection occurred. The tendency of both PCV2 and PRRSV to mutually occur was observed but a significant association was not found. A significant correlation between the antibodies of the sows and their piglets was found for all examined agents in the first week of life. In the first week of life, identical antibody titers for H. parasuis were measured in the sows and piglets and the PRRSV and PCV2 antibody titers of the piglets were even higher in the first week of life. The drop in the antibody titer in the following week of life depended on the specific agent and the starting antibody titer of the piglet in the first week of life. This fall was prolonged if the antibody titer in the first week of life was very high. High antibody titers in the sows are a prerequisite for a good passive immunity in piglets in the first week of life. The maternal immunity against H. parasuis, PRRSV and PCV2 can be improved by sow vaccination. No uniform seroconversion time was found for the four examined agents in the three farms. Thus the seroconversion of H. parasuis and M. hyorhinis began in the ninth and eleventh week of life; PCV2 began in the 9th, 11th, 18th week and PRRSV in the 14th and 18th week of life. Therefore a farm specific serological profile for every relevant agent should be done. In farm 2 and also in farm 3, a mutual seroconversion time in the 9th and 11th week of life was detected for H. parasuis, M. hyorhinis and PCV2. This points to a mutual infection time for these three agents at different times in the respective farms. A simultaneous seroconversion for PRRSV and PCV2 in the 18th week of life was observed in farm 1. Mutual agent influence is possible for H. parasuis, M. hyorhinis and PCV2 and probable for PRRSV and PCV2. The present study demonstrates the difficulty of the interpretation of serological profiles and indicates that an appropriate interpretation of the serological profile can only be done when the clinical signs are also taken into consideration.

Investigations into the diagnosis of the polyserositis complex in swine The aim of this study was to evaluate the PCR test results from collective swab samples of serous membranes for genomic fragments of H. parasuis and M. hyorhinis regarding their associations and correlations with the pretreatment, clinical and pathological findings as well as the detection of PRRSV EU strain and PCV-2. For the classification of the method in reference to H. parasuis the PCR results were compared with the results of the bacteriological examination of the BALF. Furthermore the association between PRRSV and PCV-2 as well as the correlations between the weight of the animals and the detection of the agents, the clinical score and the detection of the agents and between PCV-2 and H. parasuis, M. hyorhinis as well as PRRSV EU strain were determined. After the admission of the preliminary report, in which particularly the state of treatment and vaccination regarding H. parasuis was inquired, 143 pigs were clinically examined. The results were evaluated on the basis of a score system. From 117 pigs under neuroleptanalgesia bronchoalveolar lavage fluid was taken and examined bacteriologically for H. parasuis. The animals were euthanized afterwards and subjected to a gross pathological and histopathological examination. In the course of the necropsy collective swabs of the serous membranes were taken from the surfaces of pleura, pericard and peritoneum and analysed via PCR for genomic fragments of H. parasuis and M. hyorhinis. Additionally lung tissue samples were taken from 102 animals for the molecular biological proof of genomic fragments and tissue samples from lungs and lymph nodes were taken from 105 animals for in-situ hybridisation. The results show that the detection of the H. parasuis and M. hyorhinis in the PCR was not associated significantly with a previous treatment. No significant relation was found between the analysing methods, PCR from the collective serosal swab and bacteriological examination of the BALF. The detection of genomic fragments of H. parasuis showed a significant association with the findings of the auscultation. Furthermore the evidence of the agent in the PCR significantly correlated with the presence of CNS symptoms. The evaluation of the state of nutrition and the filling degree of the tarsal joints did not correlate significantly with the PCR proof of H. parasuis. In contrast significant relations were shown between the proof of genomic fragments of M. hyorhinis and the occurence of kyphosis, the findings of the auscultation and the evaluation of the state of nutrition, but the proof of genomic fragments of M. hyorhinis did not significantly correlate with the filling degree of the tarsal joints as well as the presence of CNS symptoms. The results of the pathological investigation showed a significant association of M. hyorhinis with the diagnosis of a catarrhal-suppurative bronchopneumonia as well as a significant association of both agents with the diagnosis of a serositis without differenciation of the site and for the singular diagnosis of a pleuritis and pericarditis. The proof of M. hyorhinis and H. parasuis in the PCR was not significantly associated with peritonitis and additionally that of H. parasuis was not significantly associated with the diagnosis of a catarrhal-suppurative bronchopneumonia. Significant associations were calculated between the detection of the following agents: H. parasuis and M. hyorhinis, H. parasuis and PRRSV EU strain as well as M. hyorhinis and PRRSV EU strain. In contrast the association between the detection of H. parasuis and PCV-2, M. hyorhinis and PCV-2 as well as PRRSV EU strain and PCV-2 was not significant. Furthermore associations were significant for the weight of the animals and the proof of PCV-2 respectively PRRSV EU strain, for the clinical score und the proof of H. parasuis respectively PCV-2 as well as for PCV-2 und PRRSV EU strain. In conclusion the sampling by collective dry swabs of the serous skins and the following PCR examination for genomic fragments is a meaningful method for the diagnosis of diseases, which are accompanied by polyserositis. With this procedure the proof of the agents can be carried out successfully in animals with clinical signs as well as in animals which are already pretreated with antibiotics. For H. parasuis and M. hyorhinis, both causal agents of polyserositis, a significant association was calculated. Both agents are capable of causing clinical signs and pathological findings associated with polyserositis. The disease induced by H. parasuis is called Glaesser´s disease, in reference to M. hyorhinis as Mycoplasma Polyserositis. Due to the existing association of both agents and the accompanied clinical and pathological signs it is reasonable to use the term “Polyserositis Complex”.

By assessing the results of this study, guidance should be provided regarding intramuscular injection volumes of medicines for pigs meeting animal welfare standards.Totally, 252 pigs were included in the trial. Tissue reactions of varying injection volumes were investigated in three groups formed according to age. Group 1 comprised suckling piglets 3 - 28 days of age. Piglets of Group 2 were 4 - 12 weeks old and Group 3 was formed of fattening pigs and sows. Studying the effect on haptoglobin concentrations of an intramuscular injection of NaCl, Stellamune® Mycoplasma, Suvaxyn® M.hyo, M+PAC® or Myofer® 100, only the vaccine M+PAC® (2 ml dosage) showed an increase above the upper value of the normal range (1.42 +/- 0.6 mg/ml). The local tolerance of two antibiotics (Terramycin® 100 and Draxxin®) was studied in three age groups. The three mycoplasma vaccines (Stellamune® Mycoplasma, Suvaxyn® M.hyo, M+PAC®) were tested in suckling as well as weaned piglets and the PRRSV-vaccine (Ingelvac® PRRS MLV) only in weaned piglets. The studied criteria comprised the laboratory parameters leukocytes, AST and CK. Additionally, the injection sites were assessed clinically over a period of six day post injectionem as well as pathoanatomically and histologically. After a single injection of Terramycin® 100 or Draxxin®, determined leukocyte values did not point to any inflammatory reactions in any of the age groups. The injection of Terramycin® 100 resulted in elevated AST enzyme values above the maximum reference standard of 35 U/l in weaned piglets, fattening pigs and sows as well as after application of Draxxin® to suckling and weaned piglets. After administration of Draxxin®, creatine kinase values rose above the limit (2000 U/I) in all age groups while after application of Terramycin® 100, elevated values of CK were only found in the groups of fattening pigs and sows. Comparing the two antibiotics, the clinical investigation of injection sites resulted in significant differences in suckling piglets and partly highly significant differences regarding individual experimental parameters in the age groups of weaned piglets and fattening pigs/sows. Comparing the three age groups and evaluating the injection sites macroscopically, predominantly highly significant differences were observed concerning the parameter “extension score 3D”. Equally, significant or highly significant results were recorded when the two antibiotics were compared separately according to age groups. Histologically, extreme myodegeneration as well as coagulation necrosis were seen. The latter was demarcated by a massive inflammatory vallum with fibroblastic budding. Giant cell formation as well as myofibrillar calcification additionally to adipose cell and vascular necrosis was found in the age groups of the “weaned piglets” and of “fattening pigs/sows”. After injection of Mycoplasma hyopneumoniae vaccines, AST enzyme values rose above the maximum range limit (8 – 35 U/I) only after application of 4 ml Suvaxyn® M.hyo to suckling piglets and after administration of 2 ml M+PAC® to weaned piglets. The findings of the clinical investigation of the injection site were either depending on the used vaccine or the applied volume. Predominantly highly significant differences were determined by macroscopic investigation of the injection site comparing the vaccines separately within dose volumes and age groups. Significant differences were seen when comparing dose volumes of Suvaxyn® M.hyo (2 and 4 ml) in the two age groups (suckling and weaned piglets) and of M+PAC® (1 and 2 ml). The results of the histologic investigation showed that the type of tissue reaction predominantly depends on the composition of the vaccine. Consequently, marked differences were found between the three used mycoplasma vaccines, however, the histological findings were predominantly uniform within the treatment groups. Concerning the tissue reaction, an obvious difference was observed between the two dose volumes (2 and 20 ml) of the Ingelvac PRRS MLV vaccine. The application of 20 ml Ingelvac® PRRS MLV vaccine caused a marked elevation of the concentration of AST and CK. Contrary, all tested blood parameter were within the range of range standards after injection of 2 ml of the vaccine. No significant differences between the two dose volumes were determined in the clinical investigation of the injection site for any of the assessed parameters. Macroscopically, highly significant differences were seen between the two dose volumes (2 and 20 ml) for the parameters “tissue alteration”, “extension score” and “extension score 3D”. The histological alteration was very similar in both experimental groups. Only the formation of granular tissue was much more pronounced with the 20 ml dosage.

Fri, 1 Jan 1993 12:00:00 +0100 https://epub.ub.uni-muenchen.de/8650/1/molecular_characterization_of_porcine_reproductive_and_respiratory_syndrome_virus_8650.pdf Thiel, Heinz-Jürgen; Woensel, Peter van; Visser, Nico; Conzelmann, Karl-Klaus

One important step in discovering a solution to PRRS, is first trying to figure out where in the world all these variants are coming from. That is what Dr. Nakarin Pamornchainavakul is trying to do. In this episode, he and I talk about his work trying to track the ancestry of PRRS L1C 144 to better understand how it spread and how this virus mutated to its current variant. Dr. Nakarin Pamornchainavakul received his DVM in 2017 from Chulalongkorn University in Thailand and is now currently a Ph.D. candidate at the University of Minnesota, College of Veterinary Medicine. His research primarily focuses on discovering the origin of PRRSV variants appearing across the United States.

Modified live virus vaccines are one of the best ways to prevent and control PRRSV today, but PRRS cases continue to be a problem. When testing for PRRSV though, its hard to tell if a positive test is from the live vaccine or from the wild type. In this episode Dr. Guarav Rawal talks about his MLV vaccine specific PCR assay that can detect the presence of a vaccine virus in a sample and what that can mean for the swine industry. Dr. Gaurav Rawal is a Virology Lab Manager in the Department of Veterinary Diagnostic and Production Animal Medicine at Iowa State University (ISU). He received his DVM from Nepal in 2014 & MS from ISU in Veterinary Preventive Medicine with Drs Bailey Arruda & Daniel Linhares in 2019. His MS thesis was on understanding epidemiology, infection dynamics & cellular tropism of an emerging virus in the US swine industry i.e. porcine astrovirus type 3. He is currently working with Dr. Jianqiang Zhang on his Ph.D. with a focus on applied virology and PRRS vaccine immunology.

Often being overshadowed by more “famous” swine diseases such as PRRSV and PEDV, Senecavirus A has been silently moving through swine herds since the late 80s. Not much is known about its epidemiology and detection has so far been mainly limited to vesicular fluid. Guilherme Preis shares his work on Senecavirus A with me in this episode and discussed his work at further understanding its epidemiology as well as different sampling techniques that can be used to monitor spread and viral shedding. Guilherme Preis is a Ph.D. student in the College of Veterinary Medicine at the University of Minnesota. He grew up in Brazil involved in the swine industry and received his B.S in Veterinary medicine from the Universidade do Estado de Santa Catarina in Brazil. He then worked for BRF for 4 years before attending the University of Minnesota to receive his M.S. in Veterinary Medicine. His research focuses on the transmission and pathogenesis of Senecavirus A in swine and the determination of herd-level risk factors associated with the disease.

PRRS virus continues to create new variants, what a surprise… However, as unfortunate as it is, we need to tract the spread and transmission of these new variants to best keep our herds healthy. In this episode, I talk with Dr. Mariana Kikuti about her work tracking a novel PRRSV 1C variant across many farms in the Midwest and what its presence could mean for many farms in the US. Dr. Mariana Kikuti is a veterinary doctor with a Masters of public health and a Ph.D. in epidemiology. Currently, she is a Researcher at the University of Minnesota. Her research interests focus on epidemiology of emerging and infectious diseases. Her current work involves mainly curating a PRRSV sequence library and using molecular epidemiology approaches to investigate patterns of disease transmission and viral evolution.

We all know that PRRSV has been a big concern shared by many swine producers and veterinarians across the US. It is therefore important to determine effectively the PRRSV status of the pig population, especially at weaning age. In today's episode, I talk with Dr. Onyekachukwu Henry Osemeke about how family oral fluids (FOFs) can be used to determine PRRSV status of weaning age pigs. Meet the guest: Dr. Onyekachukwu Henry Osemeke obtained his DVM in 2014 from Ahmadu Bello University, Zaria, Nigeria. After that, Henry worked in a private clinic for about 2 years before joining the National Veterinary Research Institute, Nigeria as a Veterinary Research Officer. First working some months in the Viral vaccine production unit and then transferred to the Viral research unit of the institute. In 2020, Henry joined the lab of Dr. Daniel Linhares at Veterinary Diagnostic and Production Animal Medicine, Iowa State University as a graduate research assistant.

PRRSV and PEDV continue to be a major problem for swine producers as they pose a major risk to both the pigs' welfare and the economical status of the farm. One potential risk of infection is through feed trucks that have recently delivered feed to another farm that is positive for PRRSV or PEDV. In This episode I talk with Dr. Grace Elijah about her study testing different decontamination methods of truck cabs to determine which method works best and which surface harbors the most bacteria. The results were not would I would have guessed, and I think you'll feel the same way. Dr. Grace Elijah is a PhD student at Kansas State University studying disease transmission in swine through feed supply chain and also studying the prevalence of Atypical Porcine Pestivirus in US swine production. Before beginning her PhD, she received her DVM from Kansas State University College of Veterinary Medicine in 2020.

PRRSV and E. coli continue to remain a problem for farms everywhere, and nursery pigs, with their often underdeveloped immune systems, can take a major toll if infected. In this episode, I talk with Jenna Bromm about her work at Kansas State University studying the effects of alpha-linolenic acid supplementation in nursery pigs infected with PRRSV or E. coli to see if it can help alleviate the reduced growth typically seen in affected pigs.   Meet the guest: Jenna Bromm is a master's student at Kansas State University on the swine nutrition team studying under Dr. Mike Tokach. She first joined the swine nutrition team as an undergraduate student while receiving her B.S. from KSU and enjoyed it so much that she decided to stick around to work towards earning an M.S. Her work primarily revolves around the use of alpha-linolenic acid in nursery pigs.

Several studies have shown that feeding increased lysine soon after a health challenge can improve performance and help mitigate the negative effects associated with the infection, but how long after infection will those high lysine diets still be effective? In this episode, I talk with Kayla Miller about 2 studies she performed testing different nutritional strategies for poor health pigs, including a delayed feeding of a high lysine diet to PRRSV infected pigs. Kayla Miller is a Swine Nutrition Ph.D. student at Iowa State University. She received her B.S. in Animal Sciences in 2020 and her M.S. in Swine Nutrition at Iowa State in 2022. She has gained industry experience by interning at both Smithfield and AMVC and has done a number of research projects at Iowa State. Visit us at https://swinenutritionblackbelt.com

We are back with a third episode with Dr. Daniel Linhares and Dr. Giovani Trevisan to discuss what they recommend in times of a PRRSV outbreak and how best to respond. PRRSV can seriously impact the economic and welfare status of your farm, and handling those issues is essential for maximizing productivity and income. Listen to the results of this study to learn how best to respond if your farm has the unfortunate reality of testing PRRSV positive. Dr. Daniel Linhares is the Roy Schultz Professor of Swine Population Medicine, at the Veterinary Diagnostic and Production Animal Medicine Department of the Iowa State University College of Veterinary Medicine. Dr. Linhares commits approximately 55% of his time to research, 30% to professional practice and outreach, 10% to teaching, and 5% to institutional service. He currently conducts research with post-DVM graduate students on “Development and evaluation of strategies to improve health and productivity of swine populations under field conditions”, and in 2019 won the Early Career Achievement in Research Award at Iowa State University. Dr. Giovani Trevisan obtained his DVM diploma in the veterinary faculty of Lages, in the state of Santa Catarina, Brazil in 2009, and got an MBA in business enterprises also in Brazil in 2013. From 2010 to 2017, he worked as a full-time veterinarian for JBS foods with an emphasis on swine animal health and production management. From 2017 to 2020, he did his Ph.D. at Iowa State University under the supervision of Dr. Linhares. Since 2020, he is a post-doc research associate in the Veterinary Diagnostic and Population Animal Medicine Center at Iowa State University. He focuses on the applied use of veterinary diagnostic test results and epidemiology concepts to make informed decisions for disease prevention and control.

Disease classification is a very important aspect for both swine producers and veterinarians. It helps provide a roadmap for how to manage viruses within herds, and PRRSV has been a major problem for the swine industry for many years. In the first episode, Dr. Derald Holtkamp shares with me Dr. Clayton Johnson about the many years he has spent developing his swine herd PRRS classification system. Listen to this short episode to learn more about it! Dr. Derald Holtkamp is a Professor of Swine Production Medicine at Iowa State University and has held the position for over 15 years. Dr. Holtkamp's research focuses on the management of infectious swine diseases, biosecurity, disease risk assessment, and the economics of animal health and disease with an emphasis on porcine reproductive and respiratory syndrome virus (PRRSV) and porcine epidemic diarrhea virus (PEDV). He is directing the Production Animal Disease Risk Assessment Program (PADRAP) at Iowa State University focusing on the development, management, and promotion of disease risk assessment tools and databases of completed risk assessments held by the American Association of Swine Veterinarians.

Controlling and minimizing PRRSV outbreaks is a major priority for farms everywhere. We currently have PRRSV regional control programs to better regulate how to respond when challenged or exposed to PRRSV. In this episode, Dr. Clayton Johnson talks with Dr. Edison Magalhães who is currently working on a proposal for a new updated program that may help with PRRSV monitoring and the development of action plans to combat it's spread. Dr. Edison Magalhães is a Ph.D. student at Iowa State University. He first received his DVM back in 2015 in Brazil and remained in Brazil working in the swine industry for BRF as an extension veterinarian. In 2019 he started attending ISU where he received his M.S. in Immunology under Dr. Daniel Linhares and has since remained there to continue his education.

We all know the dangers of PRRSV, but how many strains are out there, and how many can you have at a given time? In this episode, I talk with Dr. Daniel Linhares and Dr. Giovani Trevisan about their work performing whole genome sequencing of PRRSV on multiple farms to get a deeper understanding of the current situation of PRRSV and to see how many strains a single farm has circulating at a given time. Dr. Daniel Linhares is the Roy Schultz Professor of Swine Population Medicine, at the Veterinary Diagnostic and Production Animal Medicine Department of the Iowa State University College of Veterinary Medicine. Dr. Linhares commits approximately 55% of his time to research, 30% to professional practice and outreach, 10% to teaching, and 5% to institutional service. He currently conducts research with post-DVM graduate students on “Development and evaluation of strategies to improve health and productivity of swine populations under field conditions”, and in 2019 won the Early Career Achievement in Research Award at Iowa State University. Dr. Giovani Trevisan obtained his DVM diploma in the veterinary faculty of Lages, in the state of Santa Catarina, Brazil in 2009, and got an MBA in business enterprises also in Brazil in 2013. From 2010 to 2017, he worked as a full-time veterinarian for JBS foods with an emphasis on swine animal health and production management. From 2017 to 2020, he did his Ph.D. at Iowa State University under the supervision of Dr. Linhares. Since 2020, he is a post-doc research associate in the Veterinary Diagnostic and Population Animal Medicine Center at Iowa State University. He focuses on the applied use of veterinary diagnostic test results and epidemiology concepts to make informed decisions for disease prevention and control.