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Abstracts - Genetics and reproduction

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.

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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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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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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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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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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.

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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.

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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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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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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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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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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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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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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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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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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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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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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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Gilt replacement simulator

Tool that allows you to calculate the replacement rate in your farm

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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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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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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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Factors associated with farrowing assistance in hyperprolific sows

The frequency of farrowing assistance in sows varied among herds and was influenced by parity number.

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Genetic and phenotypic time trends of litter size, piglet mortality, and birth weight in pigs

The increases in litter size and piglet survival rates due to balanced breeding policies lead to reduced total numbers of dead piglets coinciding with a certain pig production volume.

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