A5005719046- Genetic and phenotypic traits in livestock
- Genetic Mapping and Diversity in Plants and Animals
- Meat and Animal Product Quality
- Cancer-related molecular mechanisms research
- Genetics and Plant Breeding
- Effects of Environmental Stressors on Livestock
- Reproductive Physiology in Livestock
- Ruminant Nutrition and Digestive Physiology
- Animal Nutrition and Physiology
- Animal Behavior and Welfare Studies
- Livestock Management and Performance Improvement
- Molecular Biology Techniques and Applications
- Animal Genetics and Reproduction
- Livestock Farming and Management
- Muscle Physiology and Disorders
- Genomic variations and chromosomal abnormalities
- Peroxisome Proliferator-Activated Receptors
- Birth, Development, and Health
- Chromosomal and Genetic Variations
- Helminth infection and control
- Aquaculture Nutrition and Growth
- Agroforestry and silvopastoral systems
- Veterinary Equine Medical Research
- Agriculture and Biological Studies
- Insect Utilization and Effects
Universidade Estadual Paulista (Unesp)
2016-2025
Núcleo de Pesquisas Aplicadas (Brazil)
2010-2025
National Council for Scientific and Technological Development
2007-2024
Universidade de São Paulo
2010-2024
Universidade Federal de Goiás
2022
University of Wisconsin–Madison
2022
Brazilian Agricultural Research Corporation
2022
University of California, Davis
2022
Universidade de Ribeirão Preto
2022
Centro de Genética Clínica
2022
Runs of homozygosity (ROH) are continuous homozygous segments the DNA sequence. They have been applied to quantify individual autozygosity and used as a potential inbreeding measure in livestock species. The aim present study was (i) investigate genome-wide identify characterize ROH patterns Gyr dairy cattle genome; (ii) islands for gene content enrichment shared by more than 50% samples, (iii) compare estimates molecular calculated from (FROH), genomic relationship matrix approach (FGRM)...
Abstract Background Knowledge of the linkage disequilibrium (LD) between markers is important to establish number necessary for association studies and genomic selection. The objective this study was evaluate extent LD in Nellore cattle using a high density SNP panel 795 genotyped steers. Results After data editing, 446,986 SNPs were used estimation LD, comprising 2508.4 Mb genome. mean distance adjacent 4.90 ± 2.89 kb. minor allele frequency (MAF) less than 0.20 considerable proportion...
The objective of this study was to perform a genome-wide association (GWAS) detect chromosome regions associated with indicator traits sexual precocity in Nellore cattle. Data from animals belonging farms which participate the DeltaGen® and Paint® animal breeding programs, were used. used occurrence early pregnancy (EP) scrotal circumference (SC). 72,675 females 83,911 males phenotypes used; these, 1,770 1,680 genotyped. SNP effects estimated single-step procedure (WssGBLUP) observed as...
The objective of this study was to identify genomic regions that are associated with meat quality traits in the Nellore breed. steers were finished feedlots and slaughtered at a commercial slaughterhouse. This analysis included 1,822 phenotypic records tenderness 1,873 marbling records. After control, 1,630 animals genotyped for tenderness, 1,633 marbling, 369,722 SNPs remained. results reported as proportion variance explained by windows 150 adjacent SNPs. Only largest effects considered....
Saturated fatty acids can be detrimental to human health and have received considerable attention in recent years. Several studies using taurine breeds showed the existence of genetic variability thus possibility improvement acid profile beef. This study identified regions genome associated with saturated, mono- polyunsaturated acids, n-6 n-3 ratios Longissimus thoracis Nellore finished feedlot, single-step method. The results that 115 windows explain more than 1 % additive variance for 22...
The objective of this study was to identify genomic regions and metabolic pathways associated with dry matter intake, average daily gain, feed efficiency residual intake in an experimental Nellore cattle population. high-density SNP chip (Illumina High-Density Bovine BeadChip, 777k) used genotype the animals. markers effects their variances were estimated using single-step genome wide association method. (co)variance components by Bayesian inference. chromosome segments that are responsible...
The purpose of this study was to identify genomic regions associated with carcass traits in an experimental Nelore cattle population. studied data set contained 2,306 ultrasound records for longissimus muscle area (LMA), 1,832 backfat thickness (BF), and 1,830 rump fat (RF). A high-density SNP panel (BovineHD BeadChip assay 700k, Illumina Inc., San Diego, CA) used genotyping. After quality control, 437,197 SNPs from 761 animals were available, which 721 had phenotypes LMA, 669 BF, 718 RF....
Fatty acid type in beef can be detrimental to human health and has received considerable attention recent years. The aim of this study was identify differentially expressed genes longissimus thoracis muscle 48 Nellore young bulls with extreme phenotypes for fatty composition intramuscular fat by RNA-seq technique. Differential expression analyses between animals phenotype showed a total 13 myristic (C14:0), 35 palmitic (C16:0), 187 stearic (C18:0), 371 oleic (C18:1, cis-9), 24 conjugated...
The objective of this study was to evaluate the accuracy genomic predictions for rib eye area (REA), backfat thickness (BFT), and hot carcass weight (HCW) in Nellore beef cattle from Brazilian commercial herds using different prediction models. Phenotypic data 1756 steers ten Brazil were used. Animals offspring 294 sires 1546 dams, reared on pasture, feedlot finished, slaughtered at approximately 2 years age. All animals genotyped a 777k Illumina Bovine HD SNP chip. Accuracy breeding values...
Animal feeding is the most important economic component of beef production systems. Selection for feed efficiency has not been effective mainly due to difficult and high costs obtain phenotypes. The application genomic selection using SNP can decrease cost animal evaluation as well generation interval. objective this study was compare methods traits different cross-validation layouts in an experimental cattle population genotyped a high-density panel (BovineHD BeadChip assay 700k, Illumina...
The Montana Tropical® Composite is a recently developed beef cattle population that rapidly expanding in Brazil and other tropical countries. This mainly due to its improved meat quality adaptation climate conditions compared Zebu Taurine breeds, respectively. study aimed investigate the genetic architecture of ultrasound-based carcass traits cattle. Therefore, we estimated variance components parameters performed genome-wide association studies using weighted single-step Genomic Best Linear...
Abstract The aim was to conduct a weighted single‐step genome‐wide association study detect genomic regions and putative candidate genes related residual feed intake, dry matter efficiency (FE), conversion ratio, body weight gain, intake gain in Nellore cattle. Several protein‐coding were identified within the that explain more than 0.5% of additive genetic variance for these traits. These associated with insulin, leptin, glucose, protein lipid metabolisms; energy balance; heat oxidative...
The aim of this study was to assess genome-wide autozygosity in a Nellore cattle population and characterize ROH patterns islands that may have occurred due selection within its lineages. It attempts also compare estimates inbreeding calculated from (FROH), genomic relationship matrix (FGRM), pedigree-based coefficient (FPED).The average number per animal 55.15 ± 13.01 with an size 3.24 Mb. genome is composed mostly by high shorter segments accounting for 78% all ROH, although the proportion...
ABSTRACT The calving ease (CE) trait has recently been introduced in animal breeding programs, and studies on its genetic variability have proven essential for the advancement of animals. An increase dystocia rates primiparous heifers observed due to birth heavier calves. As this is a new trait, no established model exists analysis. Thus, study developed different statistical models evaluate CE, aiming estimate parameters perform genomic predictions trait. A total 39,664 records CE from...
Nutrition and suckling are largely recognised as the most important factors affecting postpartum period consequently reproductive efficiency of beef cattle. The aim this study was to evaluate effects body condition score (BCS) restriction with without presence calf on milk production, performance. Sixty-three crossbred (Angus × Hereford) multiparous cows were managed maintain different BCS at calving thereafter (low vs moderate; L, n = 31 M, 32). Within each group (L M) week 9 (66 ± 0.88...
Stayability is a trait that has large impact on the costs of rural properties because it directly related to cow's ability produce certain number calves over given period time. Thus, objective this study was estimate genetic variance stayability (STAY) and its associations with age at first calving (AFC), body weight males females 420 days (BW420), scrotal circumference (SC420), in order provide support for evaluation program Canchim beef cattle. Genetic parameters were estimated by Bayesian...
The aim of the present study was to estimate genetic parameters for flight speed and its association with growth traits in Nellore beef cattle. (FS) 7,402 yearling animals measured, using a device composed pair photoelectric cells. Time interval data (s) were converted (m/s) faster regarded as more reactive. analyzed weaning weight (WW), ADG from age, scrotal circumference (SC). (co)variance components estimated REML multitrait analysis applying an animal model. model included random direct...
We investigated genetic associations between mature cow weight (MW) and weaning (WW), yearling (YW), gain from birth to (GBW), (GWY), hip height (WHH), (YHH), scrotal circumference (SC), age at first calving (AFC).Data 127,104 Nellore animals born 1993 2006, belonging Agropecuária Jacarezinho Ltda., were analyzed.(Co)variance components obtained by the restricted maximum likelihood method, applying an animal model in a multi-traits analysis.The included direct residual effects as random...
The objective of this study was to evaluate the genetic variability body composition traits measured by ultrasound, growth traits, and visual scores as well their associations in Nelore cattle. A total 9,765, 13,285, 13,061, 12,811, 3,484, 3,483, 3,303 records weight at time ultrasound measure (W550), 12th-13th rib LM area (LMA), backfat thickness (BF), rump fat (RF), for structure (BS), finishing precocity (FP), muscling (MS), sheath navel characteristics (SN), respectively, were used....
This study aimed to characterise progeny of sires representing major families in the Poll Nellore breed. Fourteen sires, two Angus and one Brahman sire were mated by AI ~400 multiparous dams. Calves raised stocked on pasture central Brazil until reaching ~18 months age, then fed a sugarcane bagasse-based diet an ad libitum basis market weight finish (average 23 months). There 236 (N), 38 × (AN) 31 (BN) calves born total. The weaning 423-day weights, growth rates pre- post-weaning greater (P...