Swine abstracts

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.

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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.

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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.

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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.

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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.

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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.

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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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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.

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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.

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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.

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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.

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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.

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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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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.

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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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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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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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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Breeding for resilience in finishing pigs can decrease tail biting, lameness and mortality

Breeding for resilience traits based on deviations in longitudinal weight data can decrease pigs’ tail biting wounds, lameness and mortality while improving uniformity at the pen level.

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Cooking loss estimation of semispinalis capitis muscle of pork butt using a deep neural network on hyperspectral data

Nondestructive prediction of the quality properties of pork butts can be achieved using hyperspectral images obtained from the semispinalis capitis muscle.

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Online feeding behavior monitoring of individual group-housed grow-finish pigs using a low-frequency RFID electronic feeding system

A framework for monitoring feeding behavior of grow-finish pigs in real time, using a low-frequency radio frequency identification system.

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Boosting growth and meat quality: the role of iron and inulin in finisher pigs

Iron and inulin supplementation may improve growth performance and meat quality in finishing pigs.

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Influences on the decision to euthanize a compromised pig

The two most salient reasons outlined for the delay of timely euthanasia were uncertainty and misinterpretation of the chance for healing.

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Impact of elevated dietary lysine and energy levels on growth performance, nutrient utilization, and carcass quality in growing-finishing pigs

Increasing SID lysine and net energy can enhance growth performance and backfat thickness in growing-finishing pigs.

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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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Can blended phytogenics promote growth as effective alternatives to antibiotics in weaned piglets?

Phytogenic supplementation in weanling diets may exert growth promoter effects as in pigs during the nursery period.

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Automated oestrous detection in sows using a robotic imaging system

Combining vulva volume features with days from weaning could be a suitable method to detect the onset of oestrous in sows.

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Milk supplementation and its mode of administration: Effects on growth performance, welfare, and fecal microbial ecology of suckling piglets

Milk supplement composition and availability can reduce piglet mortality during suckling and promote SCFA-producing bacteria in the gut.

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Enrichment for growing pigs - Impact on behavior and skin lesions

Findings suggest that the choice of point enrichment object can influence the level of interaction, level of interest over time, activity level, and skin lesions in growing pigs.

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Microbial additive supplementation: effects on growth performance, blood metabolites, fecal microflora, and carcass characteristics of growing-finishing pigs

Dietary supplementation microbial additive may improve performance and intestinal health in growing-finishing pigs.

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Comparison between intramuscular and intranasal administration of sedative drugs used for piglet castration

Intranasal application showed longer induction times, shorter recovery times and higher scores for defence and vocalisation.

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Effect of low-protein diets supplemented with crystalline amino acids on the performance of growing pigs

Reduction of dietary crude protein with balanced amino acid supplementation may not affect performance in growing-finishing pigs.

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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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Specialized feed-additive blends of short- and medium-chain fatty acids improve sow and pig performance during nursery and post-weaning phase

Maternal dietary supplementation with short- and medium-chain fatty acids may enhance productivity and health in sows and their litter.

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Fertility after photodynamic inactivation of bacteria in extended boar semen

Photodynamic inactivation could be a promising contribution to the One Health concept with the potential to reduce antimicrobial resistance in animal husbandry.

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Impact of calcium and vitamin D supplementation on plasma bone turnover markers, bone mineralization, bone strength, and lameness scores in gilts

Calcium and Vitamin D supplementation is not directly related to bone health and lameness prevention in gilts.

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Sound feeding signal for gestating sows: Evaluation of an individual learning strategy and its beneficial effects in groups

This study investigates the potential of teaching gestating sows an individual sound signal to reduce aggression resulting from competition for feed access.

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Inclusion of illipe nut in porker pig diets: enhancing growth performance, meat quality, and nutritional value

Cereal replacement by Illipe nut (Shorea stenoptera) in growing-finishing diets may improve carcass and meat quality traits.

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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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Impacts of single and combined probiotics on growing-finishing pigs and swine compost

Complex probiotic supplementation in growing-finishing pigs may improve feed efficiency and manure emissions.

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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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Indole-3-propionic acid boosts growth and helps prevent diarrhea by supporting antioxidant balance and reducing intestinal inflammation in weaned piglets

Indole-3-propionic acid supplementation in weanling pigs may improve growth performance and intestinal health.

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Split weaning improves pregnancy rate and embryo survival in sows mated in lactation

Weaning a portion of the litter prior to mating in lactation improved pregnancy rates and embryo survival.

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Can probiotics alleviate constipation and inflammation in late-gestating and lactating sows?

Dietary probiotic supplementation may reduce the inflammatory status in gestating and lactating sows.

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Long-term measurement of lying behavior in crates and free-farrowing pens using 3D accelerometers

This study proves the accuracy of accelerometer-based sow lying behavior classification and shows that free-farrowing systems benefit lactating sows.

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Effects of fermented mixed feed on growth performance, carcass characteristics, meat quality, and the composition of fatty acids and amino acids in the muscles of finishing pigs

Dietary supplementation of fermented mixed feed in finishing pigs may improve growth performance, meat quality, and alter the profiles of muscle fatty acids and amino acids in finishing pigs.

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Effect of sex and birth weight on the performance, microbiome, immune response and colostrum intake of piglets

Females had a higher rate of permanence in the production system and low birth weight piglets had lower colostrum intake.

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Exploring the safety of calcium nitrate in growing-finishing pig diets through methemoglobin and nitrate levels

Calcium nitrate supplementation may become a safe supplement to increase meat quality parameters in growing finishing pigs.

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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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Dietary manganese and selenium: Impact on growth and fecal microbiota in nursery piglets

Manganese supplementation in weanling diets may modulate potentially harmful pathogenic microorganisms, improving piglet gut health.

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Evaluation of different thawing protocols on Iberian boar sperm preserved for 10 years at different liquid nitrogen levels

Thawing at 70 °C for 8 seconds maximizes post-thaw sperm quality, especially in those samples stored constantly submerged in liquid nitrogen.

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Uncovering the positive impact of rye bran on lactating sow and piglet performance

Rye bran in sow diets during lactation may improve piglet performance.

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Impact of the leptin receptor gene on pig performance and quality traits

With current low-protein diets, the T allele is expected to be cost-effective only in niche markets where a very high level of marbling is critical.

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Added aroma changes pig behaviour in novel situation aimed for stunning

An added aroma increased pigs’ exploration behaviour towards the foam, and thus could serve as a distraction when inside a confined foam box.

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Enhancing pig performance and carcass quality through aspartic protease supplementation without affecting blood parameters or salivary cortisol levels

Dietary aspartic protease supplementation in growing-finishing diets may improve on pig performance and carcass quality.

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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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Adding Aspergillus oryzae as a dietary prebiotic: effects on energy and nutrient digestibility of growing pigs

Dietary supplementation of prebiotic from Aspergillus oryzae may enhance nutrient digestibility and energy value in high-fiber diets containing cereal grain byproducts.

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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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Microencapsulated essential oils boost growth and enhance gut health in weaned piglets

Essential oils supplementation in weanling diets may improve performance, intestinal health, and antioxidant capacity.

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Hourly feeding of lactating sows: Enhancing performance and welfare in smart farm-based systems

An hourly feeding regime could optimize sow productive performance, body condition, milk yield, welfare, and piglet growth in swine production.

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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.

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Sire type and a by-product-based diet: effects on performance and meat quality in growing and finishing pigs

Performance of pigs differing in feed intake capacity is not affected when by-products are included in the diet.

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Effects of space allowance during gestation and socialization training during growing period on the productivity and welfare of primiparous sows

Primiparous sow aggression may be reduced by increasing space allowance during gestation with social training during the growing period.

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Impact of capsaicin supplementation on growth, blood profiles, and carcass quality in finishing pigs

Capsaicin supplementation in finishing diets may improve performance and meat quality.

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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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The effect of feeding dietary fermentable fiber on fecal microbial composition and acetic acid production in nursery pigs

Fermentable fiber may better explain the role of fiber in pig gut health.

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Gut microbiota affects the estrus return of sows by regulating the metabolism of sex steroid hormones

Changes in gut microbial composition significantly altered the functional capacity of steroid hormone biosynthesis in the gut microbiome.

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Exploring how an organic mineral mix affects antioxidant balance, immune health, and performance in sows and their offspring

Organic trace minerals supplementation of the sow diet may improve health and performance.

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Infection prediction in swine populations with machine learning

Models provide daily infection probabilities that can be used as a benchmark to more timely support preventive and control strategies on farms.

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Different fat sources and vitamin E levels on optimizing growth performance, lean growth, organ size, carcass characteristics, primal cuts, and pork quality in heavyweight - finishing pigs

Vitamin E supplementation and its interaction with fat sources may affect yield and quality in heavy slaughtered pigs.

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A second iron injection administered to piglets during lactation improves hemoglobin concentration, growth performance, and carcass characteristics at slaughter

Administering a second iron injection resulted in greater hemoglobin at weaning and the end of the nursery as well as improved growth performance from weaning to the end of study weight and increased carcass weight at slaughter.

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Evaluation of the effectiveness and safety of different dietary levels of n-carbamylglutamate in growing-finishing pigs

N-carbamylglutamate supplementation in growing-finishing pigs may improve performance and metabolism.

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First detection of PCV4 in swine in the United States

This study provides insights into the frequency of detection, tissue distribution, and genetic characteristics of PCV4 in the US.

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Enhancing growth and gut health in nursery piglets: effects of enzymatically treated yeast and zinc oxide

Enzymatically treated yeast supplementation in weanling diets may improve post-weaning intestinal health and immunity.

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Low-density lipoproteins, resveratrol and quercetin as alternative additives to improve boar semen cooling

Low-density lipoproteins can improve the motility and kinetics of boar semen during cooling while it could modulate the sperm's mitochondrial activity.

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The effect of dietary supplementation with garcinol during late gestation on bile acid metabolism disorders and the performance of sows and newborn piglets

Garcinol supplementation may reduce bile acid metabolism disorders and improve sow and newborn piglet performance.

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Reclassification of ASFV into 7 biotypes using unsupervised machine learning

A new classification of ASFV based on comparisons performed considering the entire encoded proteome.

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The effect of a phytobiotic-prebiotic feed additive containing a combination of carob pulp, chicory, and fenugreek on growth performance, carcass traits, and fecal microbiota of fattening pigs

Supplementation with a phytobiotic-prebiotic feed additive may modulate intestinal microbiota, and positively affect growth performance, and carcass quality in grow-finish pigs.

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