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Abstracts - Pig health

Maternal vaccination partially protects piglets against influenza A virus associated alteration of the microbiome and hippocampal gene expression

Maternal vaccination mitigates the potential long-term impacts of influenza A virus infection on the microbiome and cognition.

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Buserelin shortens the estrus-to-ovulation interval and improves the pregnancy outcomes in gilts treated with a fixed-time artificial insemination

Buserelin has advantages in centralizing induced ovulation and thus improving fixed-time artificial insemination outcomes.

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Scoring of swine lung images: a comparison between a computer vision system and human evaluators

The computer vision system could be used as an alternative to the manual scoring of cranioventral pulmonary consolidation during slaughter inspections.

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Proposing a clinical case definition for PRRSV outbreaks in sow herds based on key productivity indicators

A new clinical case definition for PRRSV outbreaks in swine breeding herds has been proposed using a system based on KPI signals that will trigger diagnostics.

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Characterizing feral swine movement across the contiguous United States using neural networks and genetic data

The study provides insight into the patterns of human-mediated movement of feral swine across the US and from Canada to the northern areas of the US.

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Evaluation of an electrostatic precipitator in mitigating the transmission of airborne viruses in experimentally infected pigs

Under the conditions of this study, the electrostatic precipitators efficiently removed IAV aerosol particles and delayed the onset of IAV and PRRSV infections in the sentinel pigs.

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From mother to piglet: the lasting influence of the maternal microbiome

Beneficial bacteria are transmitted from mothers to offspring and persist through early developmental stages, thereby emphasizing the long-lasting impact of maternal microbiome.

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A synthetic genomics-based African swine fever virus engineering platform

The method will substantially facilitate the development of therapeutics or subunit and live-attenuated vaccines for ASF.

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Assessment of changes in antibiotic use in grow-finish pigs after the introduction of PRRSV in a naïve farrow-to-finish system

The PRRSV outbreak in the source was associated with a grow-finish antibiotic usage increase.

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333 Emerging Voices: Insight into coronaviruses epidemiology, including SARS-CoV 2 spillover risk, in swine farmed populations

This work investigates the epidemiology of specific and emerging coronaviruses in the pig population. Final thesis at the University of Padua, Italy, advised by Michele Drigo.

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The downregulation of genes encoding muscle proteins have a potential role in the development of scrotal hernia in pigs

The downregulation of muscular candidate genes in the inguinal tissue clarifies the genetic mechanisms involved with this anomaly in its primary site.

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Effects of grinding teeth on piglet facial lesions, sow teat lesions and performances

Grinding teeth decreased the teat lesion score on day 21 of lactation but did not influence the mortality rate or litter weight gain.

African Swine Fever

All the information about ASF: how to recognize the disease, how it is transmitted, pictures of lesions, latest news, guides, etc.

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Spatial patterns of influenza A virus spread across compartments in commercial swine farms in the United States

Prioritizing resources towards systems frequently confronting influenza problems and targeting pivotal source farms could be an effective strategy for controlling influenza.

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Ergotism in an organic sow herd and the impact on lactation performance and subsequent reproductive performance

This case reports the level of ergot alkaloids and duration of exposure found under field conditions in a herd that experienced a high neonatal mortality event consequent to agalactia in the sows.

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333 Emerging Voices - Long-distance airborne transmission of PRRSV: a systematic review

This work presents a systematic review of the available scientific literature on the long-distance airborne transmission of PRRSV. Final thesis at the College of Veterinary Medicine, UAB, Spain, advised by Enric Mateu.

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Explaining the persistence of PRRSV in vaccinated breeding herds

Selection of viral variants with enhanced transmission and reduced neutralization susceptibility alongside lateral introductions may explain the persistence of PRRSV in vaccinated breeding herds.

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Assessment of hemoglobin concentration in sows and their offspring over consecutive reproductive cycles

Decreasing sow hemoglobin concentration over the reproductive cycle and lack of post-weaning recovery in parity 3 indicates iron declines with advancing parity and may impact long-term health.

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Environmental enrichment affects immunity and reduces disease severity in pigs after co-infection, with stronger effects when applied from birth than from weaning

Enriched housing from birth reduced disease severity to co-infection with PRRSV and A. pleuropneumoniae.

Diseases manual

Description of the most important diseases and conditions in pigs

Atlas of pathology

Images of major swine diseases

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African swine fever virus vaccine strain Asfv-G-∆I177l reverts to virulence and negatively affects reproductive performance

ASFV-G-ΔI177L is not genetically stable and, therefore not safe for use in ASF vaccines. ASF vaccine candidates should be tested for safety in pregnant animals.

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Impact of a phytogenic feed additive on diarrhea incidence, intestinal histomorphology and fecal excretion of F4-fimbriated enterotoxigenic Escherichia coli in post-weaning piglets

Phytogenic feed additive supplementation to piglets challenged with F4-fimbriated enterotoxigenic Escherichia coli reduced the prevalence of fecal E. coli excretion and improved jejunal histomorphology.

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The genetic basis of swine inflammation and necrosis syndrome and its genetic association with post-weaning skin damage and production traits

Piglets genetically less likely to present swine inflammation and necrosis syndrome signs are also more unlikely to suffer combined skin damage after weaning.

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Quantitative risk assessment model of the presence of PED and ASF viruses in spray-dried porcine plasma

Under the current conditions, the model estimated that an inactivation level (log-kill) of 7.0, 7.2, and 7.3 log must be achieved to manufacture a 10-, 15-, and 20-tons batch size, respectively.

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Comparison of a novel rapid sampling method to serum and tonsil scraping to detect PRRSV in acutely infected sows

Results suggest great potential of tonsil-oral scraping as a novel, practical, and rapid tool for PRRSV RNA detection in sows to assess sow herd status.

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