417 results match your criteria: "UCD School of Agriculture[Affiliation]"

Short communication: Genomic prediction based on unbiased estimation of the genomic relationship matrix in pigs.

Animal

December 2024

State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:

The traditional genomic relationship matrix (GRM) has shown to be a biased estimation of true kinship, which can affect subsequent genetic analyses. In this study, we employed an unbiased kinship (UKin) estimation method within the genomic best linear unbiased prediction framework to evaluate its prediction performance on both a simulated dataset and a Large White pig dataset. The simulated dataset encompasses six traits, 900 quantitative trait loci, and 36 000 single nucleotide polymorphisms (SNPs).

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Antimicrobial resistance (AMR), arising from decades of imprudent anthropogenic use of antimicrobials in healthcare and agriculture, is considered one of the greatest One Health crises facing healthcare globally. Antimicrobial pollutants released from human-associated sources are intensifying resistance evolution in the environment. Due to various ecological factors, wildlife interact with these polluted ecosystems, acquiring resistant bacteria and genes.

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Background: Equine recurrent laryngeal neuropathy (RLN) is an economically important upper respiratory tract (URT) disease with a genetic contribution to risk, but genetic variants independent of height have not been identified for Thoroughbreds. The method of clinical assessment for RLN is critical to accurately phenotype groups for genetic studies.

Objectives: To identify genetic risk loci for RLN in Thoroughbreds in a genome-wide association study (GWAS) following high-resolution phenotyping.

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There is an increasing need for valid, rapid diet screening tools. A significant association between the Prime Diet Quality Score (PDQS) and reduced risk of cardiovascular disease (CVD) has been demonstrated in the US but evidence of its use in Europe is lacking. The aim of this study was to amend the PDQS for a UK/Irish population and determine validity and reliability in those at risk of CVD.

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KPRR: a novel machine learning approach for effectively capturing nonadditive effects in genomic prediction.

Brief Bioinform

November 2024

State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Yuanmingyuan West Road, Beijing, 100193, China.

Nonadditive genetic effects pose significant challenges to traditional genomic selection methods for quantitative traits. Machine learning approaches, particularly kernel-based methods, offer promising solutions to overcome these limitations. In this study, we developed a novel machine learning method, KPRR, which integrated a polynomial kernel into ridge regression to effectively capture nonadditive genetic effects.

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Intake of high quantities of dietary proteins sourced from dairy, meat or plants can affect body weight and metabolic health in humans. To improve our understanding of how this may be achieved, we reviewed the data related to the availability of nutrients and metabolites in the faeces, circulation and urine. All protein sources (≥20% by energy) increased faecal levels of branched-chain fatty acids and ammonia and decreased the levels of butyrate.

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Mycobacterium bovis (M. bovis) causes bovine tuberculosis (bTB). The challenges in controlling and eradicating this zoonotic disease are compounded by our incomplete understanding of the host immune response.

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Article Synopsis
  • The research focused on how simulated gastrointestinal digestion can break down bovine lactoferrin (LF) into peptides that have antibacterial properties.
  • The study specifically looked at the antibacterial effects against a common food-related pathogen, finding that LF digested in the stomach showed strong antibacterial activity at low concentrations, unlike undigested LF.
  • The most effective antibacterial peptides were found in the high molecular weight fraction obtained shortly after digestion, suggesting that digesting LF enhances its ability to fight bacteria, making it a potentially valuable additive in dairy products for food safety.
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MUSAE: Fusion of art and technology to address challenges in food and health.

Nutr Bull

November 2024

Institute of Food and Health and Conway Institute, UCD School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland.

There is an urgent need to transform our current food system to improve population health/wellbeing and planetary health. A number of challenges exist in order to achieve this. Artists, with their innate ability to use imagination to envision future needs and solve problems, represent a key group in this transformation.

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An international workshop on "Adapting Agriculture to Climate Change and Air Pollution" took place at Nanjing University of Information Science and Technology, Nanjing, China, during 23-27 October, 2023. Experts working in various multi-disciplinary areas of agroecosystem and environmental research gathered for academic communication and discussions. Two discussion groups focused on "agriculture under air pollution and climate change: current challenges and priorities for the future" and "adapting agriculture to air pollution and climate change: current status and next steps.

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Integrative analysis of transcriptomic and immunoproteomic data reveals stress response mechanisms in .

Heliyon

November 2024

Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise 'G. Caporale', Campo Boario, 64100, Teramo, Italy.

is a significant concern in the food industry due to its association with outbreaks of listeriosis, particularly affecting vulnerable populations. High-throughput technologies such as RNA sequencing (RNA-seq) and proteomics offer valuable insights into the molecular responses of to stress environments. In this study, a combined transcriptomic and immunoproteomic approach was applied to explore the stress response mechanisms of the strain ST7, which was responsible for an outbreak in central Italy.

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Article Synopsis
  • - Bos taurus and Bos indicus cattle diverged over 150,000 years ago, leading to significant genomic differences and complex genetic mixing in African and Southern European cattle populations over the millennia.
  • - Using software tools MOSAIC and ELAI, researchers analyzed the ancestry of hybrid African and Southern European cattle and found common genomic regions indicating retained or introgressed ancestry from various lineages, demonstrating the effectiveness of both methodologies.
  • - The study highlighted that certain genomic regions relate to important biological functions, particularly in diseases like bovine tuberculosis and trypanosomiasis, showing how retained African taurine ancestry may help cattle manage severe anaemia, improving livestock resilience in sub-Saharan Africa.
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Minerals are supplemented routinely to dairy cows during the dry period to prevent metabolic issues postpartum. However, limited information exists on the impacts of mineral supplementation on colostrum carotenoids. This study aimed to determine the effects of prepartum supplementation with three micro-nutrients; inorganic selenium (INORG), organic selenium (ORG) or rumen-protected choline (RPC) on the carotenoid content of bovine colostrum and transition milk (TM) from pasture-based dairy cows.

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Urinary Biomarkers of Strawberry and Blueberry Intake.

Metabolites

September 2024

Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland.

There is increasing interest in food biomarkers to address the shortcomings of self-reported dietary assessments. Berries are regarded as important fruits worldwide; however, there are no well-validated biomarkers of berry intake. Thus, the objective of this study is to identify urinary biomarkers of berry intake.

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A pasture or concentrate-based dietary regime impacts a variety of factors including both ruminal health and function, and consequently milk production and quality. The objective of this study was to examine the effect of feeding differing pasture levels on the metabolite composition of bovine ruminal fluid. Ruminal fluid was obtained from rumen-cannulated spring-calving cows (N = 9, Holstein-Friesian breed, average lactation number = 5) fed one of three diets across a full lactation season.

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Stranded seals are often infected with a broad range of parasites, although whether they are the cause of significant morbidity or an incidental finding is usually unclear. In this study we used stable isotope ratio analysis, a method frequently used to investigate food webs, to explore the extent to which common seal parasites feed directly on host tissue and fluids or absorb host-derived metabolites, which in turn may give an indication of their potential impact on the host's health. The trophic discrimination factor ΔN for the nasal mite, , was mostly positive, ranging between −0.

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The threat from ozone to vegetation in Ireland.

Environ Res

December 2024

School of Environment, Trent University, Peterborough, ON, K9L 0G2, Canada.

Ozone is the most damaging air pollutant to vegetation globally. Metrics of accumulated ozone above a concentration threshold (e.g.

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An exploration of prenatal breastfeeding self-efficacy: a scoping review.

Int J Behav Nutr Phys Act

September 2024

UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, D04 V1W8, Ireland.

Background: Breastfeeding self-efficacy is a woman's self-belief and confidence in her perceived ability to breastfeed. This modifiable determinant is strongly associated with breastfeeding initiation, exclusivity, and duration. It is unclear how important the timing of breastfeeding self-efficacy measurement and interventions are.

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Ireland and Britain are two islands located at Europe's westernmost edge, both of which act as the final breeding outposts for many bird species within their European ranges. Despite their similar geographic locations and geological histories, Ireland and Britain host different breeding avifauna assemblages. Diversity profiles, which can serve as more robust alternatives to classic diversity indices, were employed in this study to explore disparities in the two islands' breeding avifauna assemblages.

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Fermented foods and ingredients, including furmenties derived from lactic acid bacteria (LAB) in dairy products, can modulate the immune system. Here, we describe the use of reconstituted skimmed milk powder to generate novel fermentates from strains SC232, SC234, SC212, and SC210, and from strains SC209 and SC229, and demonstrate, using in vitro assays, that these fermentates can differentially modulate cytokine secretion via bone-marrow-derived dendritic cells (BMDCs) when activated with either the viral ligand loxoribine or an inflammatory stimulus, lipopolysaccharide. Specifically, we demonstrate that SC232 and SC234 increase cytokines IL-6, TNF-α, IL-12p40, IL-23, IL-27, and IL-10 and decrease IL-1β in primary bone-marrow-derived dendritic cells (BMDCs) stimulated with a viral ligand.

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Article Synopsis
  • Evidence indicates that the maternal metabolome during late pregnancy may impact child health outcomes, specifically growth and development in the first year of life.
  • The study followed 98 mother-child pairs, analyzing maternal serum for 132 metabolites while assessing child growth at 1, 6, and 12 months using WHO growth standards and Ages and Stages Questionnaires.
  • Key findings highlight positive associations between certain lysophosphatidylcholines and various growth metrics, while some amino acids were linked to poorer fine motor skills development in children.
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Bovine tuberculosis (bTB), caused by Mycobacterium bovis (M. bovis), represents a significant problem for the agriculture industry as well as posing a risk for human health. Current diagnostic tests for bTB target the cell-mediated immune (CMI) response to infection with M.

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Introduction: Bovine milk contains a rich matrix of nutrients such as carbohydrates, fat, protein and various vitamins and minerals, the composition of which is altered by factors including dietary regime.

Objectives: The objective of this research was to investigate the impact of dietary regime on the metabolite composition of bovine whole milk powder and buttermilk.

Methods: Bovine whole milk powder and buttermilk samples were obtained from spring-calving cows, consuming one of three diets.

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Association of plant-based diet indexes with the metabolomic profile.

Sci Rep

August 2024

UCD School of Agriculture and Food Science, Institute of Food and Health, University College Dublin, Dublin 4, Ireland.

Plant-based diets have gained attention for their potential benefits on both human health and environmental sustainability. The objective of this study was to investigate the association of plant-based dietary patterns with the endogenous metabolites of healthy individuals and identify metabolites that may act as mediators of the associations between dietary intake and modifiable disease risk factors. Adherence to plant-based dietary patterns was assessed for 170 healthy adults using plant-based diet indexes (PDI).

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Functional analysis of the Mycobacterium bovis AF2122/97 PhoPR system.

Tuberculosis (Edinb)

September 2024

UCD School of Veterinary Medicine, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland; International Institute for Vaccine Research and Development, Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo, 001-0021, Japan; International Institute for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, 001-0020, Japan; UCD Conway Institute of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland; UCD Centre for One Health, University College Dublin, Belfield, Dublin, Ireland; UCD Centre for Experimental Pathogen Host Research, University College Dublin, Belfield, Dublin, Ireland. Electronic address:

Article Synopsis
  • - The PhoPR system acts as a crucial regulator in Mycobacterium tuberculosis, with a notable difference in the PhoR protein between M. tuberculosis and M. bovis due to a specific genetic substitution.
  • - Previous studies on M. bovis PhoPR have yielded mixed results regarding its functionality, prompting the authors to investigate this further by creating a mutant strain.
  • - Their experiments revealed that the M. bovis ΔphoPR mutant displayed reduced growth and significant changes in gene expression, particularly in lipid metabolism, emphasizing the role of the PhoPR system in regulating gene expression within the Mycobacterium tuberculosis complex.
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