Porcine Health Management

Chosen Topics:

Bacteriology and Bacterial Diseases

91 - 99 of 99

DEVELOPMENT OF A QPCR-SEROTYPING SYSTEM FOR ACTINOBACILLUS PLEUROPNEUMONIAE   

A total of 16 serotypes of Actinobacillus pleuropneumoniae (APP) have been reported so far; nevertheless, data indicating which serotypes are more virulent is still lacking for most countries. Thus, updated information related to a particular geographical area might be precious.          Current techniques of APP serotyping present certain methodological limitations; cross reactions when using serological tests and inaccurate identification through Apx genes.  The aim of this work was to develop a complete set of APP typing qPCR reactions to conduct a preliminary survey regarding the current situation of APP in Spain.
Type
Abstract
Year
2018
Topic
Bacteriology and Bacterial Diseases

PASSIVE SURVEILLANCE OF LEPTOSPIRA INFECTION IN SWINE IN GERMANY

Leptospirosis is presumed to be the most widespread zoonosis worldwide; it is a cause of reproductive loss in swine breeding herds and has been reported in swine from all parts of the world. Unfortunately, current data about the prevalence of leptospiral infection in swine are rare.
Type
Abstract
Year
2018
Topic
Bacteriology and Bacterial Diseases

ROLE OF SIALIC ACID IN BRACHYSPIRA HYODYSENTERIAE ADHESION TO PORCINE COLONIC MUCUS

Infection with Brachyspira hyodysenteriae results in mucoid hemorrhagic diarrhea. This pathogen is associated with the colonic mucus layer, mainly composed of mucins. Infection increases mucin secretion in the colon, increases B. hyodysenteriae binding sites on mucins, and regulates mucin glycosylation. Here, we analyzed potential mucin epitopes for B. hyodysenteriae adhesion in the colon, as well the effect of mucins on bacterial growth.  
Type
Abstract
Year
2018
Topic
Bacteriology and Bacterial Diseases

GENE MARKERS FOR THE RESISTANCE TO PORCINE PLEUROPNEUMONIA (PLEURORES)

Actinobacillus pleuropneumoniae is considered one of the most important pathogens in commercial pig production. It causes high economic losses due to acute or chronic pleuropneumonia resulting in decreased performance and increased mortality. Antimicrobial treatment and vaccination ensure only limited protection against the repercussions of the disease, and the excessive usage of antibiotics is no longer feasible. As other means of prevention are needed, genetic disease resistance of the host holds much promise. Previous studies have discovered multiple QTL through controlled infection experiments in crossbred Hampshire/Landrace pigs that could explain up to 22% of phenotypic variance.
Type
Abstract
Year
2018
Topic
Bacteriology and Bacterial Diseases

EQUIVALENCE BETWEEN FTA-FIXED AND LIQUID ORAL FLUID OF PIGS FOR THE CONFIRMATION OF INFECTION BY VEROTOXIGENIC ESCHERICHIA COLI (EDEMA DISEASE) IN PIGS

FTA technology allows safe and practical storage and transportation of biological samples. However, its usefulness must be demonstrated with each new kind of sample. This study aimed to validate the use of FTA cards to detect the VT2e gene of verotoxigenic Escherichia coli (VTEC) in pig oral fluid by qPCR.
Type
Abstract
Year
2018
Topic
Bacteriology and Bacterial Diseases

THE USEFULNESS OF SPES SCORE TO SCREEN FOR ACTINOBACILLUS PLEUROPNEUMONIAE INFECTIONS IN ENDEMICALLY INFECTED PIG HERDS

Actinobacillus pleuropneumoniae</i> (APP) is the causative agent of porcine pleuropneumonia. Diagnosis is often done via serological investigations, with slaughterhouse checks as complementary tool. This study compares pleurisy at slaughter with serological response in herds with and without clinical signs of APP.  
Type
Abstract
Year
2018
Topic
Bacteriology and Bacterial Diseases

Antimicrobial susceptibility of Finnish Brachyspira pilosicoli isolates

Brachyspira pilosicoli is the etiologic agent of porcine colonic spirochetosis, a diarrheal disease in growing pigs. Colitis associated with Brachyspira pilosicoli is less severe than swine dysentery caused by Brachyspira hyodysenteriae, however, antimicrobial therapy is needed on some farms to treat diarrhea in weaners and in young finishing pigs. According to principles of prudent use of antimicrobials, only effective drugs should be used.
Type
Abstract
Year
2016
Topic
Bacteriology and Bacterial Diseases

An improved method of Streptococus suis serotyping and vaccine efficacy

Streptococcus suis is a gram positive bacterium that causes arthritis and fatal meningitis in young pigs. Currently, 35 different serotypes have been identified and serotype 2 is most commonly associated with the disease in the U.S. Serotyping results from isolates sent to diagnostic laboratories for testing are often non-typeable or ambiguous using current methods. In the present study, we used next generation sequencing to identify the serotype of several isolates.
Type
Abstract
Year
2016
Topic
Bacteriology and Bacterial Diseases

Role of T cells in the immune-pathogenesis of porcine contagious pleuropneumonia

Porcine contagious pleuropneumonia caused by Actinobacillus pleuropneumoniae (APP) remains one of the major causes of poor growth performance in pig herds. After recovering from the acute phase, pigs often become carriers harbouring the pathogen in tonsils, nares and chronic lung lesions. While most of the literature focuses on the role of the humoral response in attenuating the occurrence of acute symptoms, the porcine T-cell response to APP has been poorly characterised so far.
Type
Abstract
Year
2016
Topic
Bacteriology and Bacterial Diseases