Abstracts - Pig health

A study on the heterologous protection between Japanese Type 1 and Type 2 PRRSV isolates.

The methods derived from this study open up avenues to further investigate airborne transmission and risk of virus introduction into farms contributing to the control of diseases in swine.

The genetic determinants of infection identified in this work contribute to novel insights in S. suis pathogenesis and could serve as targets for novel vaccines or antimicrobial drugs.

Following tailor-made implementation of alternative measures, a substantial reduction of antimicrobial use in pig production was achievable without jeopardizing animal health.

Fecal microbiota transplantation from warthogs to pigs confers partial protection against attenuated ASFV strains.

The risk of ASFV transmission via contaminated crops is most likely low, if they are incubated for at least 2 hr minimum at room temperature.

Bioaerosol surveillance may be an effective non‐invasive surveillance approach to quickly disseminate data on multiple pathogens back to the farm stakeholders.

Senecavirus A (SVA) is the single member of the genus Senecavirus of the family Picornaviridae. A complete genome sequence of SVA strain GX2018-92 consisting of 7,280 nucleotides is reported.

A compound was identified that blocks the interaction between PRRSV and CD163, a macrophage-specific membrane scavenger receptor, potentially preventing infection.

Insufficient lactogenic protection provided by gilts plays a key role in the development of and the increased prevalence of clinical rotavirus C disease.

Currently, detection requires accessibility to infrequently available primary swine macrophage cultures. Here, we report the identification of a commercially suitable substrate for virus isolation of ASF virus.

Using resistome data in association studies adds accuracy to previously observed AMU-AMR associations. Major components of the pig resistome are positively and independently associated with on-farm AMU and biosecurity conditions.

A combination of culling and infected carcass removal is the most effective method to eradicate the virus without also eradicating the host population, and that early implementation of these control measures will reduce infection levels.

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.