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Abstracts - Pig health

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.

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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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A novel virus-like particles vaccine induces broad immune protective against deltacoronavirus in piglets

Virus-like particles are a potential clinical candidate for porcine deltacoronavirus vaccination.

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Pluck-pools as diagnostic samples for PRRSV and PCV2 in abortion material and stillbirths

Pluck-pools can be valuable diagnostic material.

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Blood transcriptomic differences in the immune response under stressful environmental according to stocking density

The study confirmed the biological mechanisms through immunological expression patterns according to stocking density.

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Assessment of temperature and time on the survivability of PRRSV and PEDV on experimentally contaminated surfaces

Time and temperature combinations effectively decrease the concentration of PRRSV and PEDV on different surfaces.

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Mitigation of aerosol and microbial concentration in a weaning piggery by spraying nanobubble ozone water with an ultrasonic sprayer

The average aerosol mass concentration in the test area was over 50% lower than in the control area.

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Can environmental nebulization of lavender essential oil improve welfare and modulate nasal microbiota of growing pigs?

The study suggests lavender essential oil may improve the welfare of growing pigs. Inhalation of lavendar reduced the nasal microbiome diversity.

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African swine fever virus DNA is present in non-biting flies collected from outbreak farms in Romania

This study brings compelling evidence of the presence of the most common synanthropic flies near domestic pig farms carrying ASFV DNA.

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Maternal flavour conditioning combined with organic and inorganic iron-supplemented creep feed on piglet and the effect on performance and haemoglobin status

Maternal flavor conditioning may improve the acceptance and efficacy of iron-supplemented creep feed as an alternative to iron injections in piglets.

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Intradermal needle-free injection prevents ASF transmission, while intramuscular needle injection does not

This study confirmed the hematogenous transmission of African Swine Fever virus between pigs through needle-sharing.

African Swine Fever

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

Diseases manual

Description of the most important diseases and conditions in pigs

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A diagnostic approach to confirm Mycoplasma hyopneumoniae “Day zero” for pathogen eradication

Sampling guidelines proposed in this study can be used for verification of M. hyopneumoniae infection of gilts following exposure to determine Day 0 of herd closure.

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