Page 46 of articles about health in Abstracts

Lena is a highly pathogenic East European subtype 3 PRRSV, which differs from European subtype 1 Lelystad and North American US5 strains at both the genetic and antigenic level.

A marked increase in the prevalence of S. enterica serovar 4,[5],12:i:- with resistance to ampicillin, streptomycin, sulphonamides and tetracyclines (R-type ASSuT) has been noted in food-borne infections and in pigs/pig meat in several European countries in the last ten years.

The purpose of this study was to detect cell-mediated and local humoral immune responses to Lawsonia intracellularis in pigs inoculated with a pure culture of the pathogenic isolate or with an intestinal mucosa homogenate.

Early weaning decreased small intestinal IAP Vcap, IAP catalytic affinity, and IAP gene expression, and this may in part contribute to the susceptibility of early-weaned piglets to increased occurrence of enteric diseases and growth-check.

Nineteen pigs with clinical signs of porcine circovirus associated diseases (PCVAD) on 5 Alberta pig farms were examined pathologically, including gross pathology, histopathology, and immunohistochemistry.

A paper published by Dr Virginia Aragón (CReSA) shows that the severity of Glässer’s disease correlates with the quantities of H. parasuis recovered from the lesions. Moreover, for the first time, disease in domestic pigs has been reproduced with a strain isolated from the nasal cavity of wild boars.

Despite that PMWS commonly affects pigs aged eight to sixteen weeks; most studies of PMWS have been conducted during the period before transfer to finishing herds. This study focused on PCV2 load and antibody dynamics in finishing herds with different PMWS status.

Researchers of the CReSA have described for the first time antigenic sites of PRRSV that are recognized by T cells, using bioinformatics tools and later immunological analysis. All these information is relevant for the design of newer and better vaccines.

A real-time PCR assay, based on Primer-Probe Energy Transfer (PriProET), was developed to improve the detection and quantification of porcine circovirus type 2 (PVC2).

In this study, we focused on establishing a challenge model for PCV2 to determine whether SIV influences PCV2 replication and increases the severity of PCV2-associated disease.

This paper compares the effectiveness of two Dutch incentive mechanisms: a collective insurance – in place prior to July 2004 – and a reduction in producer payment for each delivered pig with a liver lesion – in place from July 2004.

The present study reports the detection of PCV2, the pathogenic form of the virus, in mice and rats.

Tooth eruption and condition at weaning are associated with future weight gain. Herd premolar eruption and occlusion status changes over time.

Salmonella Typhimurium strains associated with septicemia belong to various genetic lineages that can also be recovered from asymptomatic animals at the time of slaughter.

This study confirms the hypothesis that PCV2 plays a role in pneumonia and pleurisy in 10-24 weeks old fattening pigs, not only in herds with a high prevalence of PMWS, but also in herds with no clinical signs of PMWS.

PCV-2 transmission is influenced by contact structure that appears worth being taken into account in an epidemic model.