A5042156705- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Reproductive Physiology in Livestock
- Effects of Environmental Stressors on Livestock
- Milk Quality and Mastitis in Dairy Cows
- Meat and Animal Product Quality
- Spectroscopy and Chemometric Analyses
- Genetic Mapping and Diversity in Plants and Animals
- Odor and Emission Control Technologies
- Agriculture Sustainability and Environmental Impact
- Animal Behavior and Welfare Studies
- Infant Nutrition and Health
- Livestock Management and Performance Improvement
- Probiotics and Fermented Foods
- Atmospheric and Environmental Gas Dynamics
- Genetic diversity and population structure
- Advanced Chemical Sensor Technologies
- Animal Diversity and Health Studies
- Food Supply Chain Traceability
- Cancer-related molecular mechanisms research
- Protein Hydrolysis and Bioactive Peptides
- Spectroscopy Techniques in Biomedical and Chemical Research
- Genetics and Plant Breeding
- Digestive system and related health
- Fatty Acid Research and Health
Teagasc - The Irish Agriculture and Food Development Authority
2015-2024
Runs of homozygosity (ROH) are contiguous lengths homozygous genotypes that present in an individual due to parents transmitting identical haplotypes their offspring. The extent and frequency ROHs may inform on the ancestry its population. Here we use high density (n = 777,962) bi-allelic SNPs a range cattle breed samples correlate ROH with pedigree-based inbreeding coefficients validate subsequent analyses using 54,001 SNP genotypes. This study provides first testing inference drawn from...
Domestication and the subsequent selection of animals for either economic or morphological features can leave a variety imprints on genome population. Genomic regions subjected to high selective pressures often show reduced genetic diversity frequent runs homozygosity (ROH). Therefore, objective present study was use 42,182 autosomal SNPs identify genomic in 3,191 sheep from six commercial breeds pressure quantify within each breed using ROH. In addition, historical effective population size...
Artificial selection for economically important traits in cattle is expected to have left distinctive signatures on the genome. Access high-density genotypes facilitates accurate identification of genomic regions that undergone positive selection. These findings help better elucidate mechanisms and identify candidate genes interest breeding programs. Information 705 243 autosomal single nucleotide polymorphisms (SNPs) 3122 dairy beef male animals from seven breeds (Angus, Belgian Blue,...
Numerous statistical machine learning methods suitable for application to highly correlated features, as those that exist spectral data, could potentially improve prediction performance over the commonly used partial least squares approach. Milk samples from 622 individual cows with known detailed protein composition and technological trait data accompanied by mid-infrared spectra were available assess predictive ability of different regression classification algorithms. The regression-based...
The main goal of this study was to develop, apply, and validate a new method predict an indicator for CH4 eructed by dairy cows using milk mid-infrared (MIR) spectra. A novel feature model the consideration lactation stage reflect changes in metabolic status cow. total 446 daily measurements were obtained SF6 on 142 Jersey, Holstein, Holstein-Jersey cows. corresponding samples collected during these analyzed MIR spectroscopy. first derivative applied To calibration equation incorporating...
Lactoferrin (LTF) is a milk glycoprotein favorably associated with the immune system of dairy cows. Somatic cell count often used as an indicator mastitis in cows, but knowledge on LTF content could aid detection. An inexpensive, rapid and robust method to predict required. The aim this study was develop equation quantify bovine using mid-infrared (MIR) spectrometry. quantified by enzyme-linked immunosorbent assay (ELISA), all samples were analyzed MIR. After discarding coefficient variation...
Mitigating the proportion of energy intake lost as methane could improve sustainability and profitability dairy production. As widespread measurement emissions is precluded by current in vivo methods, development an easily measured proxy desirable. An equation has been developed to predict from mid-infrared (MIR) spectra milk within routine milk-recording programs. The main goals this study were prediction for MIR illustrate its already available usefulness a high throughput phenotypic...
Information on the genetic diversity and population structure of cattle breeds is useful when deciding most optimal, for example, crossbreeding strategies to improve phenotypic performance by exploiting heterosis. The present study investigated prominent dairy beef used in Ireland. Illumina high-density genotypes (777 962 single nucleotide polymorphisms; SNPs) were available 4623 purebred bulls from nine breeds; Angus (n=430), Belgian Blue (n=298), Charolais (n=893), Hereford (n=327),...
Body condition score (BCS) is a subjective estimate of body reserves in cows. and its change early lactation have been associated with cow fertility health. The aim the present study was to BCS (ΔBCS) using mid-infrared spectra milk, particular focus on estimating ΔBCS cows losing at fastest rate (i.e., most interest producer). A total 73,193 records (scale 1 5) from 6,572 were recorded. Daily interpolated cubic splines fitted through records, subsequently used calculate daily ΔBCS. merged...