Porcine Health Management

Chosen Topics:

Virology and Viral Diseases

46 - 60 of 80

MODELLING AFRICAN SWINE FEVER INTRODUCTION AND GEOGRAPHICAL EXPANSION IN FRANCE AND EVALUATION OF DETECTION AND CONTROL POTENTIAL

Being a notifiable disease, the emergence of African swine fever in disease-free countries has huge economic consequences mainly due to export ban. Moreover, with a case fatality rate close to 100%, ASF represents a major threat for the swine industry. Recent ASF outbreaks in eastern Europe revealed the need of prospective approaches to analyse the consequences of the introduction and spread of ASF at the country level.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

SUBCLINICAL PORCINE CIRCOVIRUS TYPE 2 (PCV2) INFECTION: DETERMINATION OF DIFFERENT HERD PROFILES SPLIT ACCORDING TO AN OPTIMAL SEROLOGICAL CRITERION

PCV2 is associated with various disease conditions known as porcine circovirus diseases (PCVD). PCV2 infection dynamics play a role in PCVD. However, few data are available on PCV2 infection dynamics in herds without signs of PCVD. The study aimed at 1/ assessing PCV2 infection dynamics in herds with subclinical PCV2 disease and without PCV2 piglet vaccination and 2/ identifying a serological criterion to discriminate between PCV2 infection profiles.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

INVESTIGATION OF THE IMPACTS AND DYNAMICS OF SWINE INFLUENZA VIRUS IN DANISH SWINE HERDS

To investigate the impacts and dynamics of influenza a virus (IAV) in Denmark, a longitudinal study was performed in four Danish herds with production of pigs from 0-12 weeks. Four batches of pigs were included from each herd. One batch consisted of four sows with each five of their own piglets ear tagged at birth. All herds were monitored over a four month period.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

KINETICS OF EXPRESSION OF CD163 AND CD107A IN THE LUNG AND TONSILS OF PIGS AFTER INFECTION WITH PRRSV-1 STRAINS OF DIFFERING VIRULENCE

Porcine Reproductive and Respiratory Syndrome (PRRS) is one of the most important diseases of the porcine industry worldwide. Highly pathogenic strains (HP-PRRSV) causing atypical outbreaks have been notified, stressing the marked genetic and antigenic viral variability, which has encouraged the interest to understand the immunobiology of PRRSV strains of differing virulence.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

ANALYSIS OF VIRAL POPULATIONS AFTER EXPERIMENTAL INFECTION WITH PORCINE CIRCOVIRUS 2 AND ASSOCIATION WITH DIFFERENT CLINICAL MANIFESTATIONS

The within-host diversity is known to play a relevant role in the pathogenesis of rapidly evolving viruses, affecting their ability to evade the host immune response and conditioning the tissue tropism. Porcine circovirus 2 (PCV2) is a rapidly evolving virus and can establishes relatively longlasting infection. Therefore, it has the potential for developing relevant within-host heterogeneity, with consequences that have never been investigated.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

EPIDEMIOLOGICAL SURVEILLANCE AND CHARACTERIZATION OF INFLUENZA A VIRUSES (IAV) IN SPANISH AND PORTUGUESE PIG FARMS

The aim of this study was to determine the diversity of IAV circulating in pig farms of Spain and Portugal retrieved from clinical outbreaks as well as from random surveillance.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

PRRS RISK ASSESSMENT OF DUTCH SOW HERDS USING COMBAT

COMBAT is a questionnaire tool to assess farm associated PRRSV risk factors by looking at variable risks: Internal, External, Management and Location. In this overview we tried to have an insight in the most relevant risk factors for PRRSV infections of sow herds in the Netherlands, using COMBAT.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

THE USE OF PROCESSING FLUIDS COMPARED TO SERUM FOR DETERMINATION THE PRRS TYPE 1 STATUS OF NEONATAL PIGLETS ON A COMMERCIAL DUTCH FARM

For diagnosing early (vertical) PRRS-infections, a lot of piglets have to be bled. Bleeding new born piglets is stressful and time consuming which can only be done by well-trained people. Recent findings from the US indicate the possibility of using processing fluids (PF) for diagnosing early PRRS-type 2 infections.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

NO EVIDENCE OF PCV2 INFECTION OF PIGLETS IN 60 DANISH SOW HERDS

Porcine circovirus type 2 (PCV2) infection in sows can result in irregular rebreeders, abortion and weak newborn piglets. The extent of PCV2 related reproductive problems and impact on the status of suckling piglets has never been investigated in Denmark. Hence, this study investigated the occurrence of PCV2 in piglets.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

CLINICAL RESEARCH TOOLS FOR PRRSV GROWTH AND DETECTION

The porcine reproductive and respiratory syndrome (PRRS) is an economically important disease worldwide causing reproductive failure in sows and respiratory symptoms in piglets. The main target cells of PRRSV are alveolar macrophages (AMph). The growth of PRRSV in vitro is not consistently achieved in cell lines like MARC-145 cells. Primary porcine macrophages are susceptible to PRRSV.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

RESULTS OF PRRS CONTROL IN DUTCH FINISHER FARM AFTER OUTBREAK OF PRRS

The objective of this study was to evaluate the effect of a PRRS vaccination under field conditions at a PRRS positive farm with finisher pigs.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

DETECTION OF INFLUENZA A VIRUSES IN SWINE HERDS IN THE NETHERLANDS DURING APRIL TO SEPTEMBER 2017

The influenza A virus (IAV) subtypes H1N1, H1N2 and H3N2 circulate in domestic pigs at variable rates in The Netherlands. Following the emergence of the human pandemic H1N1 2009 IAV (H1N1pdm), variants of this virus occurred in global swine populations. Here we describe the detection of IAV including H1pdmN1 and H1pdmNx in swine farms in The Netherlands in the period April to September 2017.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

PREVALENCE OF ENTERIC PATHOGENS IN OUTBREAKS OF NEONATAL DIARRHEA IN PIG FARMS OF SPAIN

Neonatal diarrhea is one of the major causes of economic losses in porcine production and many infectious agents can be involved. In this study, outbreak cases of diarrhea were tested for a panel of major enteric pathogens in suckling piglets in Spain.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

ASSESSING THE SOW HERD PORCINE CIRCO VIRUS-2 (PCV2) STABILITY UTILIZING PLACENTAL UMBILICAL CORD SERUM (PUCS) SAMPLES PRE AND POST MASS VACCINATION WITH 1ML INGELVAC CIRCOFLEX

PUCS sampling has shown to be a convenient method to detect vertical transmission of PCV2 from viraemic dams to their offspring. Furthermore, vaccination of sows with Ingelvac CircoFLEX® has shown to reduce vertical transmission and improve the reproductive performance of the sow herd.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases

THE UPTAKE AND DISINTEGRATION OF PORCINE CIRCOVIRUS TYPE 2 VIRIONS IN BLOOD MONOCYTIC CELLS

Monocytic cells are important target cells for porcine circovirus type 2 (PCV2) in pigs. They can take up PCV2. However, the mechanism of this process and the outcome were still not elucidated.
Type
Abstract
Year
2018
Topic
Virology and Viral Diseases