Abstracts - Pig health

The total prevalence of PToV was 45% (9 out of 20 farms); it was the first detection of PToV in China.

A pre-infection of SJPL and PAM cells with App blocked completely PRRSV infection.

A review published by researchers of CReSA provides an overview of the current knowledge of virulence factors of H. parasuis.

The objective of this study was to evaluate the effect of porcine circovirus type 2 (PCV2) vaccines on PCV2-viremic and -seropositive piglets born from naturally PCV2-infected sows against postnatal PCV2 challenge.

New Neonatal Porcine Diarrhoea Syndrome (NNPDS) is a newly defined syndrome, characterized by a treatment-refractory diarrhoea during the first days of life.

These studies demonstrate for the first time, to our knowledge, that a protein can function as a transactivator of ribosomal frameshifting.

Sampling breeding herds and suckling-age piglets could serve as a valuable alternative to traditional surveillance schemes.

The behavior of three antibiotics (bacitracin, chlortetracycline, and tylosin) and two classes of antibiotic resistance genes (ARGs), tet and erm, were monitored in swine manure slurry under anaerobic conditions.

The findings of this study have implications for future PCV2 vaccine testing and administration strategies.

The data collected in this study add new knowledge on this very important and difficult to control segment of the farm-to-fork chain.

PCV2b challenge increases the expression of a large number of immune-related and pro-apoptotic genes mainly in MoDC, which possibly explain the increased inflammation.

Biosecurity is a useful measure to promote the reduction of antimicrobial use in the pig industry.

No dam related risk factor for colonisation status of litter or piglets within litters could be identified.

Our results indicate that brucellosis infections in feral swine within the US are typically caused by B. suis.

One-dose vaccination of sows against PCV2 induces colostral antibody transfer.

This study is the first to show an impact of PRRSV/SIV co-infection and superinfections in the cellular and tissue immune response at the molecular level.

The within-flow prevalence was reported to be variable (1% to 20%), with cases reported in five provinces and 11 states.

Different factors were specifically associated with either H1N1 or H1N2 SIV infections.

Analysis of ORF5 and full-length genome sequences of PRRSV isolates of genotypes 1 and 2 retrieved worldwide provides evidences supporting that recombination is a common phenomenon and may produce mosaic isolates.

Oral fluids can be used as a sample type to accurately detect the presence and circulation of PEDV in pig herds.

Organic dust extract exposure negatively affects pig macrophage activation and function, potentially enhancing host susceptibility to a variety of respiratory infections.

Phylogenetic analysis revealed that they belonged to the lineages ‘‘Avian-Like’’ H1N1, ‘‘Human-Like’’ H3N2, and ‘‘Human-Like’’ H1N2

In conclusion, placental transmission of PCV-2 from a non-immune sow to fetuses is possible when the infection of the dam occurs before gestation or after 62 days of gestation.

Therefore, the aim of the present study was to investigate the frequency of M. hyopneumoniae infections in suckling pigs of endemically infected herds.