A5030565870- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Genetic Mapping and Diversity in Plants and Animals
- Genetic diversity and population structure
- Animal Disease Management and Epidemiology
- Biochemical and Structural Characterization
- Cancer-related molecular mechanisms research
- Animal Behavior and Welfare Studies
- Probiotics and Fermented Foods
- Bioenergy crop production and management
- Microbial infections and disease research
- Bacterial Identification and Susceptibility Testing
- Dermatology and Skin Diseases
- Animal Genetics and Reproduction
- Streptococcal Infections and Treatments
- Fluid Dynamics and Turbulent Flows
- Plasma and Flow Control in Aerodynamics
- Livestock Management and Performance Improvement
- Agriculture, Soil, Plant Science
- Aquatic Invertebrate Ecology and Behavior
- Agriculture and Biological Studies
- Mitochondrial Function and Pathology
- Microbial Metabolism and Applications
- Meat and Animal Product Quality
- Genomics and Phylogenetic Studies
AgResearch
2014-2025
Utah State University
2024
Associazione Regionale Allevatori della Lombardia
2022
University of Otago
2006-2007
Abstract Background In the Neolithic, domestic sheep migrated into Europe and subsequently spread in westerly northwesterly directions. Reconstruction of these migrations subsequent genetic events requires a more detailed characterization current phylogeographic differentiation. Results We collected 50 K single nucleotide polymorphism (SNP) profiles Balkan that are currently found near major Neolithic point entry Europe, combined data with published genotypes from southwest-Asian,...
Rumen microbes break down complex dietary carbohydrates into energy sources for the host and are increasingly shown to be a key aspect of animal performance. Host genotypes can combined with microbial DNA sequencing predict performance traits or related environmental impact, such as enteric methane emissions. Metagenome profiles were generated from 3139 rumen samples, collected 1200 dual purpose ewes, using restriction enzyme-reduced representation (RE-RRS). Phenotypes available (CH4) carbon...
Dysgalacticin is a novel bacteriocin produced by Streptococcus dysgalactiae subsp. equisimilis strain W2580 that has narrow spectrum of antimicrobial activity directed primarily against the principal human streptococcal pathogen pyogenes. Unlike many previously described bacteriocins Gram-positive bacteria, dysgalacticin heat-labile 21.5 kDa anionic protein kills its target without inducing lysis. The N-terminal amino acid sequence...
Abstract By their paternal transmission, Y‐chromosomal haplotypes are sensitive markers of population history and male‐mediated introgression. Previous studies identified biallelic single‐nucleotide variants in the SRY , ZFY DDX3Y genes, which domestic goats four major haplotypes, Y1A, Y1B, Y2A Y2B, with a marked geographical partitioning. Here, we extracted goat from whole‐genome sequences 386 (75 breeds) seven wild species, were generated by VarGoats genome project. Phylogenetic analyses...
Pithomycotoxicosis, more commonly known as facial eczema (FE), is a liver disease that occurs predominantly in New Zealand because of its toxigenic Pithomyces chartarum strains. The first reported case was sheep 1887. Since the 1930s, number studies have been conducted an attempt to mitigate problems FE has on and dairy industries. research these included work fungicide biological control saprophytic fungus, use different pasture plants inhibit fungal growth, stock management with respect...
Unlike the colicins, microcins and related peptide antibiotics, little is known about antibiotic proteins (M(r)>10,000) from Gram-positive bacteria, since only few examples have been described to date. In this study we used heterologous expression of recombinant access 17 kDa protein SA-M57 Streptococcus pyogenes, along with two unknown function identified in publicly available databases: EF1097 Enterococcus faecalis YpkK Corynebacterium jeikeium. Here show that all three are different...
Pneumonia is an important issue for sheep production, leading to reduced growth rate and a predisposition pleurisy. The objective of this study was identify loci associated with pneumonic lesions pleurisy in New Zealand progeny test lambs. lungs from 3,572 progeny-test lambs were scored presence severity at slaughter. Animals genotyped using the Illumina Ovine Infinium HD SNP BeadChip (606,006 markers). heritability lung lesion score calculated genomic relationship matrix, genome-wide...
Facial eczema (FE) is a hepato-mycotoxicosis found mainly in New Zealand sheep and cattle. When genetics was to be factor FE susceptibility, resistant susceptible selection lines of Romney were established enable further investigations this disease trait. Using the Illumina OvineSNP50 BeadChip, we conducted selection-sweep experiment on these genetic lines. Two analytical methods used detect signals, namely Peddrift test (Dodds & McEwan, 1997) fixation index FST (Weir Hill, 2002). Of 50 975...
By their paternal transmission, Y-chromosomal haplotypes are sensitive markers of population history and male-mediated introgression. Previous studies identified biallelic single-nucleotide variants in the SRY, ZFY, DDX3Y genes, which domestic goats four major Y1A, Y1B, Y2A Y2B with a marked geographic partitioning. Here, we analyze whole-genome sequences 386 from 75 modern breeds 7 wild goat species that were generated by VarGoats genome project. Phylogenetic analyses indicated haplogroups...
Abstract This study is to investigate the driving physics and related frequency contents in two elementary flow instabilities, Kelvin-Helmholtz (KHI) Rayleigh-Taylor instability (RTI). Using computational simulation, each simulated individually then combined generate field data for analysis structures their contents. The results show KHI frequencies are inlet velocity perturbation shear properties. RTI analyses reveal no apparent dominant frequencies. Combined KHRTI exhibit peaks which...
This study explored the genetic variability in New Zealand sheep population for economically important skin traits. Skins were collected at slaughter from two progeny test flocks, resulting 725 skins evaluated grain strain, flatness, crust leather strength and overall suitability shoe leather. DNA profiles post-slaughter matched to individual animals using previously high-density genotypes.Considerable phenotypic variation traits was observed, with around 40% of being identified as suitable...
Facial eczema (FE) is a significant metabolic disease that affects New Zealand ruminants. Ingestion of the mycotoxin sporidesmin leads to liver and bile duct damage, which can result in photosensitisation, reduced productivity death. Strategies used manage incidence severity include breeding. In sheep, there considerable genetic variation response FE. A commercial testing program available for ram breeders who aim increase tolerance, determined by concentration serum enzyme,...