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Abstracts of a selection of the best articles on pig production, health, management, welfare, nutrition, behaviour, genetics, reproduction, etc. will be published in this section.

Swine abstracts

333 Emerging Voices - Pathological findings in pigs affected by inclusion body rhinitis

This work evaluates the relationship of inclusion body rhinitis in pigs with other findings observed in necropsies. Final thesis at the Veterinary Pathology Diagnostic Service of the Faculty of Veterinary Medicine, UAB, Spain, advised by Joaquim Segalés.

Comparative metabolic and stress-related responses to adrenaline in Iberian and Landrace pigs

Results suggest that Iberian pigs are furnished with increased metabolic flexibility to face short-term stress.

Automated detection and scoring of pleurisy in Norwegian slaughtered pigs: a field trial

AI-driven tools have the potential to enhance disease surveillance, reduce observer variability, and facilitate large-scale data collection in slaughterhouse environments.

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The effect of probiotic supplementation on growth performance, fecal odor, and carcass characteristics through modulation of the intestinal microbiome in pigs

Probiotic supplementation during the nursery period may enhance growth performance, reduce fecal odor, and improve carcass quality in pigs.

Effects of drinking water temperature and flow rate during cold season on growth performance of weaned piglets

This study recommends a specific combination of drinking water temperature and flow rate for weaned piglets during cold weather for the consideration of animal welfare and production efficiency.

Effect of pellet die thickness on amino acid digestibility in growing pigs

Pellet processing related with die thickness may become a relevant factor explaining maximum protein and amino acid digestibility in growing pigs.

Seasonal occurrence of African swine fever in wild boar and domestic pigs in EU Member States

Seasonal effects may be related to the abundance and population dynamics of wild boar and to seasonality in pig farming.

Effects of oral probiotic supplementation on performance, blood biochemistry, diarrhea incidence, and mortality in high- and low-birth-weight piglets

Oral probiotic supplementation may reduce mortality in low-birth-weight piglets.

Transabdominal ultrasound guided AAV9-GFP delivery in fetal pigs: a translational and minimally invasive model for in utero fetal gene therapy

These results instill optimism for the prospect of implementing gene therapies in utero to prevent or correct many human genetic diseases, specifically multisystem disorders such as mitochondrial diseases.

Effects of long-term replacement of soybean meal with canola meal in sow diets on reproductive performance and litter outcomes

Canola meal may be considered as a sustainable protein source for sow diets without affecting reproductive performance and health.

Efficiency of different strategies for pig slurry bioacidification to reduce ammonia and greenhouse gas emissions during long term storage

Slurry bioacidification could reduce the need for sulfuric acid and carbon substrates to mitigate gaseous emissions from long-term manure storage.

Low-protein diets in lean genetics lines improve nitrogen efficiency without compromising growth or meat quality in finisher pigs

Low-protein diets in finishing pigs may improve nitrogen efficiency without affecting performance and carcass quality.

Few effects of sow lactational stress on maternal behavior, but altered physiology with implications for piglet early-life stress coping

Lactational stress resulted in increased cortisol in sow milk and saliva.

Dietary protein restriction in phase feeding systems and the effect on nitrogen metabolism and excretion in pig production

Dietary protein reduction together with amino acid supplementation may improve nitrogen retention in growing-finishing pigs.

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.

Tannic acid supplementation in low-protein diets improves intestinal health and modulates gut microbiota in weaned piglets challenged with E. coli

Tannic acid supplementation may improve gut health in weaned piglets.

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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The effect of dietary fiber supplementation in late gestation on gut microbiota modulation, reproductive performance, and colostrum quality in sows

Increased dietary fiber supplementation in late gestation may enhance health and performance in sows and piglets.

Bioactive peptides from Spanish dry-cured ham: Antioxidant effects using a Caenorhabditis elegans model

Dry-cured ham peptides have potential as functional ingredients or nutraceuticals useful to combat oxidative damage in the body.

Effects of glutamine supplementation on carcass traits, proximate composition, amino acid profile and inflammatory markers in different muscles of pigs

Dietary glutamine supplementation after weaning can improve pig health and pork quality traits at slaughter.

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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Low protein diets balanced with amino acids sustain growth and modulate muscle and microbiota in finishing pigs

Amino acid balanced low protein diets may reduce nitrogen excretion without affecting efficiency in finishing pigs.

Effects of light spectrum on pig behaviour, health and growth

Light spectrum seems to have limited effects on behaviour, health and growth of growing-finishing pigs kept in commercial conditions with limited space and a relatively barren environment.

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Effects of dietary supplementation with a Bacillus-based probiotic on gut health in weaned piglets challenged with rotavirus

Bacillus-based probiotic supplementation may reduce rotavirus effects in weaned piglets.

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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Integrating probiotic and amino acid supplementation to optimize reproductive outcomes in highly prolific sow lines

Co-supplementation of B. Subtilis and L-arginine in gestating sows may improve reproductive performance and litter quality.

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.

Evaluation of salami packed under different packaging materials

This study highlights the potential of alternative and more sustainable packaging materials to enhance meat product preservation.

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.

Optimizing pork fat quality through dietary high oleic soybean oil in finishing pigs

Dietary high oleic soybean oil supplementation in growing-finishing diets may improve pork quality and shift pork fat toward higher unsaturated fatty acids and lower saturated fatty acids.

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Piglets’ behaviour and performance in relation to sow characteristics

Only some of the measured nutritive and non-nutritive sow factors influenced litter performance and behaviour, with parity and litter size also playing a role.

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Dietary energy level and oil supplementation improve gut health at cold temperatures by modulating gut microbiota and metabolic states in growing-finishing pigs

Dietary oil supplementation improves gut health at cold temperatures in growing-finishing pigs.

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.

Lycopene as a protective agent against soybean meal–induced intestinal injury in early-weaned piglets

Lycopene supplementation may smooth intestinal challenges and intestinal injury in weanling pigs.

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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Effect of glutamine and glutamate supplementation in sow diets during late gestation and lactation on sow performance, colostrum amino acid profile, and piglet weaning weight

Glutamine and glutamate supplementation in late gestation and lactation improves sow performance and piglet growth.

333 Emerging Voices: Factors determining the growth of piglets during lactation and their relationship with weaning weight

This final project from the Faculty of Veterinary Medicine at CEU Cardenal Herrera University was supervised by Antonio González de Bulnes López.

Dimensions of the modern pig

Changes in animal husbandry practices for swine make it necessary to validate or update these dimensions for modern animals.

Astragalus polysaccharide supplementation improves growth performance, carcass characteristics, and meat quality in finishing pigs

Astragalus polysaccharide supplementation may improve growth performance and carcass and meat quality in finishing pigs.

Inheriting the sins of their fathers: boar life experiences can shape the emotional responses of their offspring

Boar breeding environments affect the stress response and emotionality of their offspring.

Increasing dietary net energy by 5% enhances growth and feed efficiency in growing–finishing pigs

Net energy is paramount for appropriate growth gain and final body weight in finishing pigs, without affecting nutrient digestibility and gas emissions.

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.

The effect of prebiotic xylo-oligosaccharide supplementation on gut microbiome, innate immunity, gut barrier function, and performance in piglets experiencing post-weaning diarrhea

Prebiotic xylo-oligosaccharides may enhance growth performance and gut health in weaning piglets.

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.

Arginine supplementation in lactating sows improves milk composition, supports piglet growth, and modulates gut microbiota

Arginine in sows diet improves milk composition, promoting a healthier and more balanced gut microbiome at weaning.

Assessing pig personality in the home pen: a novel laser test

A novel quick in-pen laser test to assess piglet personality traits while minimizing environmental and handling interferences.

Impact of the probiotic Bacillus amyloliquefaciens on growth performance, carcass traits, and intramuscular fat deposition in finishing pigs

Bacillus amyloliquefaciens effects on pig growth and meat quality.

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.

Effects of niacinamide supplementation in low-protein diets on energy utilization, nitrogen metabolism, and gut microbiota in growing–finishing pigs

Metabolic benefits of niacinamide in low-protein diets.

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.

Fiber-rich diets from suckling to nursery enhance piglet gut development and energy efficiency despite temporary growth slowdown

Fiber-rich diets at weaning may become successful feeding strategy in piglets.

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.

The effect of L-malic acid on the metabolic health of gestating sows and on skeletal muscle fiber remodelling in their offspring

Maternal L-malic acid consumption during gestation improves offspring muscle development and metabolic health.

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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.

Metabolomic profiling of Iberian dry-cured ham: Preliminary approach to discriminate between hams from different commercial categories

Certain advanced mass-spectrometry-based analytical tools have been found useful to characterise and authenticate a variety of meat products.

Effects of fermented pine needle supplementation on carcass and meat quality in growing pigs

Fermented pine needles may improve meat tenderness and antioxidant status without affecting carcass traits in finishing pigs.

The effect of ramped nursery housing on pig behavior during loading and unloading at marketing

Ramp exposure during the nursery phase reduced ramp loading duration at market weight.

Evaluating cottonseed protein isolate as a nutritious and gut-healthy alternative to cottonseed meal in growing pigs

Cottonseed protein isolate may be a suitable alternative to cottonseed meal in growing pigs.

Social behaviour in groups of castrated and uncastrated organic fattening male pigs - consequences for the individual

Contact to female groups and higher space allowance were key mitigating factors.

Effects of fermented feed materials in weaning diets on growth performance and health parameters in piglets

Fermented feed materials containing Pediococci and Lactobacilli may improve gut health and growth performance in weanling pigs.

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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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Impact of dietary fiber on nutrient digestibility and gut microbiota of lactating sows

The inclusion of dietary fiber in lactating diets may directly depend on fiber source and their fermentability.

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333 Emerging Voices - Impact of nest covers on welfare and performance of temporarily crated sows and their piglets during lactation

This work supports the use of temporary crating as a viable alternative to conventional farrowing crates. Final thesis at the Department of Animal and Food Science of the Faculty of Veterinary Medicine, UAB, Spain, advised by Pol Llonch Obiols.

Boar semen storage at 5 °C for the reduction of antibiotic use in pig insemination: Pathways from science into practice

Boar semen storage at 5 °C is an innovative tool to reduce antibiotics in extenders.

Energy consumption and quality improvement of frozen pork using NaCl refrigerant with three amino acids in contact immersion freezing

This study provides a new refrigerant for contact immersion freezing in the meat industry.

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Effects of stocking density and illuminance in lairage of fattening pigs in different temperatures

Stocking at too-high density at high temperatures and stocking of too-low density at low temperatures affect meat quality and animal welfare.

Replacing soybean meal with spirulina maintains growth performance and meat quality in growing pigs

Spirulina may become a sustainable alternative to soybean meal in pig diets.

Exploring the effect of play on heart rate variability as a measure of positive emotional states in pigs

Engaging in play increases heart rate variability, with this effect persisting into the period immediately after play.

Effect of dietary crude protein on gut microbiota, metabolites, and nutrient efficiency over time in growing pigs

A low protein diet may enhance gut health but reduces nutrient digestibility through time-dependent microbiota shifts.

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.

Improving nutrient utilization of distillers dried grains with soluble in weaned piglet diets using extrusion: impacts on growth performance and intestinal health

Extrusion may improve nutrient digestibility of distillers dried grains for weaning diets.

Genetic parameters for image-based estimations of swine feet and leg conformation traits

The current study presents an algorithm that extracts novel, objective structural conformation traits and reports corresponding genetic and phenotypic parameters.

Effect of the probiotic Hungatella hathewayi on host estrogen levels via regulation of gut microbiota and host metabolism in sows

Dietary supplementation of Hungatella hathewayi may modulate gut microbiota and estrogen levels in sows.

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The role of carcass processing (hot vs. cold boning) on pork belly morphological and mechanical characteristics

The carcass processing method and refrigerated storage time influence the belly quality.

Impact of ground herb and essential oil phytobiotics on gut health and growth performance in nursery pigs challenged with F18⁺Escherichia coli

Herb based phytobiotics supplementation may improve gut health in weanling pigs.

Integrating computer vision algorithms and RFID system for identification and tracking of group-housed animals

The proposed framework enabled reliable tracking of group-housed pigs for extended periods, offering a promising alternative to the independent use of image or RFID approaches alone.

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Antioxidant and osmolyte enriched or energy-dense diet: effect on heat-stressed finishing pigs

Supplementation with antioxidants and osmolytes may improve weight gain in heat-stressed finishing pigs.

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.

Optimal benzoic acid supplementation enhances growth, nitrogen utilization, and carcass traits while reducing ammonia emissions in pigs from weaning to market

Dietary benzoic acid supplementation may improve growth performance, N retention while reducing the environmental impact in growing-finishing pigs.

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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.

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.

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.

Effects of increased essential fatty acid intake during lactation on sow’s reproductive performance

Dietary supplementation of essential fatty acids during lactation may improve reproductive performance in multiparous sows but not in primiparous sows.

Ad libitum feeding systems for lactating sows: effects on productivity and welfare of sows and piglets

Data suggest that sows fed ad libitum eat what they need and can convert feed more efficiently into the piglets’ growth without additional weight loss.

Effects of supplemental choline chloride on growth and carcass traits in growing-finishing pigs

Dietary choline supplementation in growing-finishing pigs may improve carcass traits without any negative impact on growth performance.

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The promotion of play behaviour in grow-finish pigs: The relationship between behaviours indicating positive experience and physiological measures

Play was successfully promoted and sustained until the finishing period and equally expressed regardless of extra space.

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Colonic bacterial community responding to selenium-enriched yeast supplementation associated with improved gut mucus function in growing-finishing pigs

Dietary selenium enriched yeast supplementation in short period may have beneficial effects on intestinal health in growing-finishing pigs.

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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.

Boosting piglet health after weaning: the role of the natural emulsifier glyceryl polyethylene glycol ricinoleate in gut development

Dietary glyceryl polyethylene glycol ricinoleate supplementation may improve intestinal health in post-weaning piglets.

Factors contributing to stillbirth in young hyper-prolific sows in a tropical free-farrowing system

Stillbirths in young, hyper-prolific sows were linked to several factors including large litter sizes, prolonged cumulative birth intervals, and elevated body mass index.

Effect of feeding sows with milk biofortified with n-6 and n-3 on the immune status of sows and their piglets

Milk biofortified with n-6 and n-3 may improves the immune status of sows and promotes positive transgenerational effects.

Osteomyelitis in pig carcasses at a Portuguese slaughterhouse: association with tail-biting and teeth resection

Meat inspection data were collected from 100,489 finishing pigs slaughtered in a northern Portuguese abattoir.

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Effects of diammonium phosphate supplementation in low-protein diets of growing pigs on growth performance, carcass traits, and meat quality

Supplementing a low-protein diet with diammonium phosphate may improve growth performance and the amino acid content related to meat flavor.

Influence of deep-litter bedding materials on environmental and welfare-related factors in boar studs

Trial runs were conducted in winter and summer to compare five deep-litter bedding materials.

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Mitigating heat stress in pigs: effects of an additive-enriched diet on performance, health, and water intake during hot weather

Osmoprotectants and antioxidant supplementation may reduce the negative impact of heat stress in growing finishing pigs.

Less experienced observers assess piglet castration-induced acute pain differently than experienced observers: A pilot study

The present pilot study supports the enhancement and implementation of UPAPS on farm and laboratory settings by minimally qualified observers.

Weaned pigs fed a low-crude protein, propionic acid-preserved grain diet: effects of butyric acid supplementation on the gut microbiome and growth performance

Grain preserved with organic acids and butyric acid may promote nutrient digestibility and feed efficiency but may affect intestinal microbial balance.

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.

Improving sow and litter performance, health, and gut microbiota with a probiotic supplement based on bacillus strains

Probiotic supplementation through gestation and lactation may improve sow performance and piglet health.

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