A5071764436- Genetic and phenotypic traits in livestock
- Meat and Animal Product Quality
- Animal Nutrition and Physiology
- Effects of Environmental Stressors on Livestock
- Genetic Mapping and Diversity in Plants and Animals
- Ruminant Nutrition and Digestive Physiology
- Animal Behavior and Welfare Studies
- Spectroscopy and Chemometric Analyses
- Agriculture Sustainability and Environmental Impact
- Advanced Chemical Sensor Technologies
- Animal Genetics and Reproduction
- Coleoptera Taxonomy and Distribution
- Helminth infection and control
- Reproductive Physiology in Livestock
- Muscle Physiology and Disorders
- Genetics and Plant Breeding
- Identification and Quantification in Food
- Nutrition, Genetics, and Disease
- Genomics, phytochemicals, and oxidative stress
- Adipose Tissue and Metabolism
- Coleoptera: Cerambycidae studies
- Growth Hormone and Insulin-like Growth Factors
- Research on scale insects
- Rangeland Management and Livestock Ecology
- Traditional and Medicinal Uses of Annonaceae
Instituto Nacional de Investigación Agropecuaria
2013-2025
Institut Pasteur de Montevideo
2023
National Institute of Health Dr. Ricardo Jorge
2015
Integrative Neuroscience Initiative on Alcoholism
2013
Scottish Agricultural Science Agency
2004-2012
Universidad de la República
2011-2012
Scotland's Rural College
2006-2009
King's College Hospital
2009
Fearful behavioral responses to handling (temperament) are undesirably associated with ADG and meat quality in infrequently handled Bos indicus cattle. It has never been assessed whether these relationships exist calmer taurus breeds systems where is more frequent. Such predominate some countries beef production a major agricultural activity. During fattening, 144 crossbred cattle from Limousin Aberdeen Angus sires were for temperament using 4 approaches: response movement along race (race...
This study compared the use of various models to describe growth in lambs 2 contrasting breeds from birth slaughter. Live BW records (n = 7559) 240 Texel and 231 Scottish Blackface (SBF) weighed at 2-wk intervals were modeled. Biologically relevant variables estimated for each lamb modified versions logistic, Gompertz, Richards, exponential models, linear regression. In both breeds, all nonlinear fitted data well, with an average coefficient determination (R2) > 0.98. The model had a lower...
Infection by gastrointestinal nematodes (GINs) in sheep is a significant health issue that affects animal welfare and leads to economic losses the production sector. Genetic selection for parasite resistance has shown promise improving productivity. This study aimed determine if incorporating genomic data into genetic prediction models currently used Uruguay could improve accuracy of breeding value estimations GIN Australian Merino breed. compared predictions using BLUP (Best Linear Unbiased...
Selection of genetically resistant animals is one alternative to reduce the negative impact gastrointestinal nematodes (GIN) on sheep production. The aim this study was identify genomic regions associated with GIN resistance in Corriedale by single-step genome-wide association studies (ssGWAS) using 170, 507 and 50K single nucleotide polymorphisms (SNPs). Analysis included 19,547 lambs faecal egg counts (FEC) records, a pedigree file 40,056 454, 711 383 genotypes from SNPs, respectively....
The objective of this study was to examine the online use near infrared reflectance (NIR) spectroscopy estimate concentration individual and groups fatty acids (FA) as well intramuscular fat (IMF) in crossbred Aberdeen Angus (AA×) Limousin (LIM×) cattle. This achieved by direct application a fibre-optic probe muscle immediately after exposing meat surface abattoir at 48 h post mortem. Samples M. longissimus thoracis from 88 AA× 106 LIM× were scanned over NIR spectral range 350 1800 nm...
The objective of this study was to develop equations predict retail product and fat trim (weights percentages) for Nellore (Bos indicus) cattle. Live ultrasound measurements the longissimus muscle area, backfat thickness at 12th rib rump depth shrunk body weight were obtained from 218 steers weights percentages carcass product, pistola trimmings. After slaughter, carcasses deboned weighed cuts directly. Measurements taken directly in explained 97% 36% variation percentage, 94% respectively....
The aim of this study was to investigate the genetic diversity within and among three breeds sheep: Corriedale, Merino Creole. Sheep from (Merino n = 110, Corriedale 108 Creole 10) were genotyped using Illumina Ovine SNP50 beadchip®. Genetic evaluated by comparing minor allele frequency (MAF) breeds. Population structure differentiation assessed STRUCTURE software, principal component analysis (PCA) fixation index (F ST). Fixed markers (MAF 0) that different identified as specific breed...
Residual feed intake (RFI) has become a widely spread index of efficiency. Although most beef cattle systems in the world are pasture based, RFI evaluation and research is usually performed confinement conditions. In this context, residual heat production (RHP) estimated as difference between actual expected (HP), could allow to identify efficient animals. Thus, aim work was evaluate relationship paternal breeding values (EBV) for heifer efficiency, measured RHP, well its association with...
The objective of this study was to identify genomic regions and genes associated with resistance gastrointestinal nematodes in Australian Merino sheep Uruguay, using the single-step GWAS methodology (ssGWAS), which is based on estimated breeding values (GEBVs) obtained from a combination pedigree, phenotypic data. This converts GEBVs into SNP effects. Analysis included 26,638 animals fecal egg count (FEC) records two independent parasitic cycles (FEC1 FEC2), 1,700 50K genotypes. Comparison...
Oxidative stress occurs when oxidant production exceeds the antioxidant capacity to detoxify reactive intermediates or repair resulting damage. Feed efficiency has been associated with mitochondrial function due its impact on cell energy metabolism. However, mitochondria are also recognized as a major source of oxidants. The aim this study was determine lipid and protein oxidative markers, gene expression well activity enzymes in liver steers divergent residual feed intake (RFI) phenotypes....
Abstract This study investigates the accuracy of an automatic image analysis method that was developed for spiral computed tomography scans (SCTS), with objective calculating volume muscle in hind leg (HLMV CT ) and lumbar region (LRMV lambs. The first step isolation (segmentation) regions each SCTS, using a new program implemented Sheep Tomogram Analysis Routines software (STAR). Due to differences shape investigated, segmentation applies different paths specific subregions. These were...
Variations in phenotypic expression of feed efficiency could be associated with differences or inefficiencies mitochondria function due to its impact on energy expenditure. The aim this study was determine hepatic mitochondrial density and terms respiration, gene protein expression, enzyme activity respiratory complex proteins, steers divergent residual intake (RFI) phenotypes. Hereford (n = 111 n 122 for year 1 2, respectively) were evaluated postweaning 70 d standard test RFI. Forty-six...