Der Podcast von und für Schweineprofis

Meet the Expert ist der Podcast für alle, die sich professionell mit dem Tiergesundheits-Management in Schweinebetrieben befassen.

In unserer Podcast-Serie beantworten internationale Experten Ihre wichtigsten Fragen aus der Praxis des Schweinegesundheits-Managements.



Abonnieren Sie Meet the Expert auf Ihrer bevorzugten Podcast-Plattform und hören Sie jeden zweiten Montag eine neue Folge mit den neusten Experten-Erkenntnissen zu PRRS und weiteren Erregern.


Season 1 - alle episoden hier anhören

Porcine parvovirus - next steps in vaccination

“The antibodies generated by some old vaccine strains have their neutralising capability reduced by the new PPV”

Professor André Felipe Streck of the University of Caxias do Sul in Brazil gives his expert view of the key question: Are long-established PPV vaccines still effective when faced with new field strains of the virus? He also discusses whether years of vaccinating sow herds against reproductive failure due to the porcine parvovirus PPV have played any part in the mutation of the virus into newer forms. (Running time: 20 minutes)

Porcine parvovirus 20 years of change

“We have an evolutionary process with this virus… evolutionary hot-spots on the surface of the virus, located at points in contact with the host’s immune system”

In southern Brazil, Professor André Felipe Streck of the Institute of Biotechnology at the University of Caxias do Sul leads us through the changing story of the porcine parvovirus PPV. Long considered a stable virus that could be controlled by vaccines developed four decades ago, its evolution into diverse forms has become evident since the year 2000. Newer strains display amino acid substitutions in the capsid or external protein layer of the virus which influence antigenicity. (Running time: 33 minutes)

ASF: New evidence on infectivity

“An important message for veterinarians and farmers is that the spread of ASF from farm to farm is possible with a very small dose of the virus”

Professor Grzegorz Wozniakowski is Head of the Department of Swine Diseases at the National Veterinary Research Institute in Puławy, Poland, and also Director of Poland’s National Reference Laboratory on African swine fever. In addition to sharing his expertise on the diagnostic methods available for ASF, he describes a Polish study published in 2020 which demonstrated a delay of up to five days after infection before the appearance of clinical signs and found that even an extremely low titre of the viral strain tested was enough to infect pigs.
(Running time: 34 minutes)

ASF: Poland battles the threat from its forests

“Highly pathogenic African swine fever virus is present in all wild boar in Poland; there are no safe levels of wild boar density”

Poland’s first incidence of ASF was in wild boar in 2014 and since then it has recorded over 7,000 wild-boar cases of the disease as well as nearly 270 outbreaks in domestic pigs, notes Professor Grzegorz Wozniakowski, Director of the country’s National Reference Laboratory on African swine fever. He sets out Polish experiences over the past six years in dealing with the risk of very virulent strains of the ASF virus passing to farm pigs from forest swine.
(Running time: 33 minutes) 

2020 European PRRS Research Awards: Project leaders present 
their winning proposals

“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

Airborne transmission: Tracking the spread of swine viruses through the air

“Vaccinating animals decreases clinical signs and also the amount of viruses in the air, so it is a good mechanism to reduce airborne transmission”

While taking her doctorate in veterinary population medicine at the University of Minnesota, Dr. Carmen Alonso investigated the extent to which swine viruses were transmitted in the air from a farm suffering an outbreak. In this conversation she describes the influence of particle size on the airborne transmission of the viruses of PRRS, Influenza A and the porcine epidemic diarrhoea syndrome --- and explains how even large particles with a high viral load can be carried a long distance. (Running time: 34 minutes) 

PRRS: Challenges shown by boar station breakdown

“A weak spot for PRRS control comes when you take boar semen or gilts from outside into a herd”

Better surveillance for PRRS at boar stations in Denmark has followed a breakdown at a PRRS-negative boar station which led to sharply reduced sow productivity at herds in the area, reports Professor Lars Erik Larsen of the University of Copenhagen. Investigators discovered that the break involved a recombinant form of the virus, combining strains from two vaccines used at a sow herd about 5 kilometres from the boar station. (Running time: 28 minutes) 

Covid coronavirus: How to protect farm workers

“Extra biosecurity should begin outside the farm…our graphics for training emphasise not only the risks from contacts within the farm, but also from those that workers have on their way to work and from their families.”

We talk to international veterinary consultant and population medicine expert Dr. Carmen Alonso about her recommendations for the precautions that a swine farm should take, to shield its farm workers from the severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infection responsible for Covid-19 disease in humans during the worldwide pandemic. Dr. Alonso reports good results from using visual aids to convey key messages to the people who work on the farm.  (Running time: 32 minutes) 

IAV-S: Focus for control must include the farrowing unit

“Piglets as well as sows play a key role in transmitting the virus”

Veterinary virologist Dr. Pia Ryt-Hansen from the University of Copenhagen suggests practical lessons for controlling Porcine Respiratory Disease Complex viruses, based on her research into swine Influenza A virus or IAV-S in a sow herd in Denmark. Hear how production strategies and even maternally derived antibodies can actually contribute to viral persistence in the herd, plus potential benefits from the application of diagnostic tools such as genomic sequencing of virus identity and monitoring of coughing by pigs in the barn.
(Running time: 18 minutes) 

IAV-S: Mutation risk of a persistent year-round infection

“People coming into the herd should at least have a vaccination against influenza”

Influenza A virus (IAV-S) can occur constantly within a swine herd, all year round, warns Dr. Pia Ryt-Hansen in Denmark. This persistence provides an ideal environment for the virus to change. A particular risk would arise if visitors or farm staff introduced seasonal strains of human influenza virus.
Running time: 17 minutes

PRRS: When a virus beats the barriers

“Immunevasion and recombination are not linked, but both are part of the same complex allowing some PRRS viruses to evade the normal controls on the farm”

How can PRRS sometimes manage to penetrate apparently well protected farms? Viral mutation and the relatively slow completion of the pig’s immune response offer clues, according to this conversation with Dr. Enric Mateu, Professor of Animal Health at Universitat Autonoma de Barcelona in Spain and researcher at the CRESA Catalan institute of animal health.
Running time: 37 minutes

PPV: Viral evolution raises vaccine issues

“There are indications that some of the oldest vaccine strains are not providing full protection against emerging new genotypes of parvovirus”

Hear how Dr. Poul Henning Rathkjen (Boehringer Ingelheim Nordic) and Professor Hans Nauwynck (Head of Virology at the University of Ghent’s veterinary medicine faculty in Belgium) assess recent reports of the emergence of new, virulent strains of the porcine parvovirus PPV. (Running time: 35 minutes)

PRRS: New weapons against extra virulence

“In our challenge studies with a highly virulent European strain, the pigs had quite good protection from a vaccine that is new in Europe”

In conversation with Dr. Andrea Ladinig (University of Veterinary Medicine Vienna, Austria) and Dr. Greg Stevenson (Iowa State University, USA) about investigations of genetics and vaccination to combat more virulent strains of the PRRS virus. 
(Running time: 23 minutes) 

PRRS: Hotter types produce more virus

“Peak titres can show 1,000 times more virus in blood serum with higher virulence strains”

In conversation comparing American and European views of high-virulence PRRS strains, Dr. Greg Stevenson (Iowa State University, USA) and Dr. Andrea Ladinig (University of Veterinary Medicine Vienna, Austria) describe marked differences in replication, in ability to cross the placenta before the third trimester of gestation and in severity of lung damage where these so-called hotter strains occur.
                                     (Running time: 33 minutes)

PRRS: Gilt entry holds the key to herd stability

“The tricky part of herd immunisation is how you introduce your gilts”

Our second podcast with Dr. Poul Henning Rathkjen of Boehringer Ingelheim Nordic covers the herd management procedures that support effective vaccination against PRRS.
(Running time: 19 minutes) 

PRRS: Sequencing in practice

“Like a cloud that is spreading, the diversity of the virus is becoming bigger and bigger”

We hear from Dr. Poul Henning Rathkjen of Boehringer Ingelheim Nordic about the practical value of sequencing to identify a PRRS virus and indicate its origins.
(Running time: 28 minutes) 

PRRS: Panel picks latest research award winners

“We would like to have more proposals from the field”

Professor Enric Mateu (UAB/CRESA, Barcelona, Spain) chairs the five-person independent expert panel that judges applications for the annual European PRRS research awards sponsored by Boehringer Ingelheim. Here he outlines the three winning proposals in the latest round, each receiving a 25,000 Euros award  and invites more veterinary practitioners to consider applying. 
(Running time: 26 minutes) 

APP: Profile of a rapid killer

“It’s like an invading army in the lung, pigs can die from it within a day of infection”

This third podcast interviewing Dr. Greg Stevenson (veterinary diagnostic pathologist at Iowa State University, USA) deals with the incredibly rapid, virulent respiratory disease in pigs caused by Actinobacillus pleuropneumoniae or APP.    (Running time: 17 minutes)

M.hyo and SIV: Contrasts for speed of spreading

“Compared to PRRS, Mycoplasma is very slowly transmitted while influenza is a highly transmissible agent” 

After our separate podcast with him about PRRS, veterinary diagnostic pathologist Dr. Greg Stevenson discusses coughing in pigs due to Mycoplasma hyopneumoniae and the type-A swine influenza virus.
(Running time: 33 minutes) 

PRRS: The sound of the cough

“Coughs sound different because of subtle differences in the ways that organisms cause damage to the respiratory tract”

Pigs with PRRS have a distinctive cough due to the type of damage inflicted by the virus, we hear from Dr. Greg Stevenson (veterinary diagnostic pathologist at Iowa State University, USA). Combined with information on the number of pigs in a barn that develop coughing over time, this helps us to recognise PRRS and differentiate it from other respiratory pathogens.    (Running time: 38 minutes)

Season 2 - verfügbare episoden im überblick  

African swine fever: Tracking the route of infection

“African swine fever and classical swine fever are two completely different diseases in their epidemiology and the behaviour of the virus”

How does the African swine fever virus reach and infect domestic pigs? The most common routes are spelled out in this podcast featuring Dr. Klaus Depner, a virologist and ASF specialist who leads a working group on transboundary animal disease management at FLI, the German federal institute for animal health. The virus does not enter on infected droplets or airborne transmission, he says, most often it has been carried into the barn by people. The main way it invades a pig's body is through contaminated feed or water, although even then only a small proportion of the animals exposed become infected.

African swine fever: The swine disease spread by humans

“We learned that it's a human-made disease so it's a matter of what people are doing and how they behave”

Virologist Dr. Klaus Depner in Germany tells us that preventing the entry of the African swine fever virus is fundamentally a matter of good farm biosecurity coupled with education of the general public so they are not transmitting the virus or carrying it in food or other materials. At the German federal institute for animal health FLI, Dr. Depner heads a working group on transboundary animal disease management. Controlling ASF within territories demands a long view, he says. African swine fever is a disease where you need lots of patience.

 
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