Page 24 of articles about swine-diseases in Abstracts

Since it was first reported in 1995, porcine reproductive and respiratory syndrome (PRRS) has become one of the most important swine diseases in China. A large number of field PRRSV strains have been isolated from different regions of China at different times, especially after a highly pathogenic PRRSV emerged in 2006.

This study aims to determine the clinical and virological outcome of surgical inoculation of 55-day-old immuno-incompetent porcine foetuses with PCV2a or PCV2b.

A multiplex polymerase chain reaction (PCR) was designed for the simultaneous detection of four viruses involved in reproductive and respiratory failure in pigs: porcine circovirus type 2 (PCV-2), porcine parvovirus (PPV), classical swine fever virus (CSFV) and porcine reproductive and respiratory syndrome virus (PRRSV).

The correlations found suggest that the measurement of Hp and CRP in saliva and meat juice could serve as complementary, or possibly alternative, biomarkers of pig herd-health.

This work studied the colonization of H. parasuis in healthy piglets coming from vaccinated and non-vaccinated sows.

Airborne transport of PRRSV 1-8-4 and M hyo 232 occurs over longer distances than previously reported and that both pathogens remained infectious.

The objective of this study was to determine a possible relationship between Mulberry Heart Disease (MHD) and the levels of vitamin E, selenium, and 13 other minerals, in heart and liver tissues, as well as to carry out PCR tests on heart tissues in order to determine the existence of a possible relationship between viral pathogens and MHD.

To gain insight into the interaction between the virus and host cells, microarrays were used to analyze changes in genomic expression of lymph nodes following PCV2 infection and negative control in pigs.

Feed-borne spread of Salmonella spp. to pigs has been documented several times in recent years in Sweden. Experiences from the field suggest that feed-associated serotypes might be less transmittable and subsequently easier to eradicate from pig herds than other serotypes more commonly associated to pigs.

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.