Abstracts - Pig health

Vaccinating against the influenza A (H1N1)pdm09 virus, can improve reproductive performance in sow herds infected with pandemic influenza A virus.

Controlling the prevailing G4 EA H1N1 viruses in pigs and close monitoring in human populations, especially the workers in swine industry, should be urgently implemented.

Dietary supplementation with C. butyricum or E. faecalis promoted growth performance, improved immunity, relieved intestinal villus damage and inflammation, and optimized the intestinal flora in LPS-challenged weaned piglets.

Improving piglet colostrum intake along with the reduction of the shedding in sows may favor the control of Salmonella infection in breeding farms.

Early development of gilt progeny may be delayed compared with sow progeny and a number of anatomical differences present at birth are also present at weaning.

Approximately 40% of US slaughterhouse pigs were found to be seropositive for HEV. Blood of HEV-viremic pigs from slaughterhouses may contaminate pork supply chains.

Feeding Mannan-rich hydrolyzed copra meal and fermented rye to nursery pigs combined with organic acids reduces S. Typh shedding, and feeding fermented rye with OA tends to improve pig performance after S. Typh challenge.

The gene-deleted HLJ/-18-7GD virus is a safe and effective vaccine against ASFV, and could play an important role in controlling the spread of ASFV.

The novel cELISA demonstrated excellent agreement and high level correlation with VNT. It is a reliable tool for sero-monitoring of C-strain vaccination campaign.

For 9 feed ingredients exposed to 30-day shipment conditions, half-lives ranged from 9.6 to 14.2 days, indicating that the feed matrix environment promotes virus stability.

Here we report the discovery that deletion of a previously uncharacterized gene, I177L, from the highly virulent ASFV-G produces complete virus attenuation in swine.

Circovirus 4 was identified in several pigs with severe clinical disease in Hunan Province, China.

Essential oils may act as antimicrobial agents in seminal doses serving as an alternative to traditional antimicrobials in the face of increasing antimicrobial resistance.

A commonly employed molecular typing method for M. hyopneumoniae is Multiple‐Locus Variable number tandem repeat Analysis (MLVA).

Sampling technique validated to monitor PRRSV-2 using serosanguinous exudate or processing fluids (PFs) from tissues obtained during tail docking and castration provides a general framework to interpret PRRSV-2 surveillance program results more accurately.

The aim of this work was to compare the profile and time-course of humoral and cell-mediated immunity in stable and unstable herds, respectively.

In this pilot study, we sought to assess and characterize the mycobiome in the feces of swine from birth through the critical weaning transition.

According to the results of this study carried out in 60 German farrow-to-finish herds , the active improvement of biosecurity measures could be a promising alternative to reduce antimicrobial usage on herd level.

Processing fluids (PF) constitute a useful sample to detect PRRSV infections at processing. Current practice to bleed 30 pigs could be underestimating PRRSV prevalence in the herd.

The objective of this pilot study was to determine if a fluorescent powder (Glo Germ) could be used to study the transfer of contamination from livestock trailers to the center alleyway and pens in the barn during marketing events.

We found decreasing proportions of S. enterica serovar Typhimurium, Derby and Heidelberg and increasing proportions of Infantis and serovar Johannesburg.

These results could open the door to new perspectives on the utility of early life antimicrobial administration to healthy neonates in swine management systems.

In this study, shotgun metagenomics was employed to monitor the effect of oxytetracycline, administered at a therapeutic dose, on the dynamics of the microbiota and resistome in the feces of weaned pigs.