A5065619713- Genetic and phenotypic traits in livestock
- Genetic Mapping and Diversity in Plants and Animals
- Meat and Animal Product Quality
- Veterinary Equine Medical Research
- Effects of Environmental Stressors on Livestock
- Animal Genetics and Reproduction
- Ruminant Nutrition and Digestive Physiology
- Genetics and Plant Breeding
- Reproductive Physiology in Livestock
- Cancer-related molecular mechanisms research
- Genetic diversity and population structure
- Animal Behavior and Welfare Studies
- Helminth infection and control
- Animal Nutrition and Physiology
- T-cell and Retrovirus Studies
- Heat shock proteins research
- Milk Quality and Mastitis in Dairy Cows
- Veterinary Pharmacology and Anesthesia
- Regulation of Appetite and Obesity
- Forest ecology and management
- Vector-Borne Animal Diseases
- Livestock Farming and Management
- Livestock Management and Performance Improvement
- Coal and Coke Industries Research
- Insect Resistance and Genetics
Universidade Federal de Lavras
2012-2022
ORCID
2021
Universidade Estadual Paulista (Unesp)
2007-2012
Universidade Federal de São Carlos
2010-2011
Studies are being conducted on the applicability of genomic data to improve accuracy selection process in livestock, and genome-wide association studies (GWAS) provide valuable information enhance understanding genetics complex traits. The aim this study was identify regions genes that play roles birth weight (BW), weaning adjusted for 210 days age (WW), long-yearling 420 (LYW) Canchim cattle. GWAS were performed by means Generalized Quasi-Likelihood Score (GQLS) method using genotypes from...
The development of linkage disequilibrium (LD) maps and the characterization haplotype block structure at population level are useful parameters for guiding genome wide association (GWA) studies, understanding nature non-linear between phenotypes genes. elucidation can reduce information several single nucleotide polymorphisms (SNP) into a block, reducing number SNPs in coherent way consideration GWA genomic selection studies. maximum average LD, measured by r2 varied 0.33 to 0.40 distance <...
Beef cattle breeding programs in Brazil have placed greater emphasis on the genomic study of reproductive traits males and females due to their economic importance. In this study, genome-wide associations were assessed for scrotal circumference at 210 d age, 420 age first calving, second Canchim beef cattle. Data quality control was conducted resulting 672,778 SNPs 392 animals.Associated observed (435 SNPs), followed by (12 calving (six (four SNPs). We investigated whether significant within...
Meat quality involves many traits, such as marbling, tenderness, juiciness, and backfat thickness, all of which require attention from livestock producers. Backfat thickness improvement by means traditional selection techniques in Canchim beef cattle has been challenging due to its low heritability, it is measured late an animal's life. Therefore, the implementation new methodologies for identification single nucleotide polymorphisms (SNPs) linked are important strategy genetic carcass meat...
The purpose of this study was to access and characterize single nucleotide polymorphisms (SNP) located within the HSF1 HSPA6 candidate genes for adaptability in Angus breed raised subtropical climate. Samples DNA from 20 animals representing extreme phenotypes traits were obtained. Sequence variations described by sequencing target regions. We identified 12 SNP gene. Moreover, four six found gene cause amino acid substitutions protein-coding also a representative (called tag SNP) region with...
The ASAP1 gene is located in a QTL region for meat production traits and to access the role of gene, association between SNP this beef cattle was studied. For this, about 270 steers reference families Nelore breed were used. investigation marker effects on performed using mixed model under restricted maximum likelihood method. Novel shear force measured at 24 h post mortem (P≤0.0083) described population cattle. This polymorphism accounted 1.13% total additive variance 17.51% phenotypic...
Abstract: The objective of this work was to evaluate how the parameterization and application different allometric values affect obtention most adequate fit von Bertalanffy’s model, in description growth curve meat-producing mammals (bovine, pigs, rabbits, sheep). Among nonlinear models, has been very often applied several areas, with parameterizations. This model commonly used an value m = 2/3; however, for mammals, it is believed that can be 3/4. analyzed data referring mass according...
ABSTRACT: The analysis of the growth and development various species has been done using curves specific animal based on non-linear models. objective current study was to evaluate fit Brody, Gompertz, Logistic von Bertalanffy models cross-sectional data live weight MangalargaMarchador horses identify best model make accurate predictions regarding maturity in males females this breed. involved recording 214 horses, which 94 were 120 non-pregnant females, between 6 153 months age. parameters...
The objective of this study was to estimate the heritability probability early pregnancy (PEP) and scrotal circumference (SC) genetic correlation between these traits in Nellore cattle. PEP records from 11,696 females born 1983 2001 were analyzed. assumed be one for that effectively bred herd (19.84%) zero those discarded before first calving (80.16%). model used included effects contemporary group, age dam at heifer weaning age, direct additive effects, residual effects. For SC, 9335...
Os objetivos neste trabalho foram estudar os efeitos de ambiente sobre a espessura gordura subcutânea (EGS), área olho-de-lombo (AOL) e o peso aos 19 meses idade estimar parâmetros genéticos para essas características. Utilizaram-se informações obtidas 987 bovinos da raça Canchim (5/8 Charolês + 3/8 Zebu) do grupo genético animal MA (filhos touros charoleses vacas 1/2 nascidos em 2003, 2004 2005. componentes covariância estimados pelo método máxima verossimilhança restrita utilizando-se um...
Canchim is a composite cattle breed developed in Brazil for beef production. One of the breeding objectives to increase fat deposition. QTLs thickness and/or marbling have been reported on BTA4 and BTA14. The IGFBP3 DDEF1 genes, mapped BTA14, respectively, affect adipogenesis. We looked SNPs genes that could be associated with backfat cattle. For SNP identification, sires highest accuracy were ranked according expected value thickness; 12 extremes (six six lowest trait) chosen. Six regions...
The potassium inwardly rectifying channel, subfamily J, member 11 (KCNJ11) gene was investigated as a candidate for meat tenderness based on the effects reported muscle KCNJ11 knockout in rat models and its position quantitative trait locus (QTL) bovine genome. Sequence variations were described by sequencing six amplified fragments, covering almost entire gene. We identified single nucleotide polymorphisms (SNP) validated them different approaches, taking advantage of simultaneous projects...
Cytokines are small cell-signaling proteins that play an important role in the immune system, participating intracellular communication.Four candidate genes of cytokine family (IL2, IL4, IL13, and IFNG) were selected to identify Single Nucleotide Polymorphisms (SNPs) might be associated with resistance gastrointestinal endoparasites goats.A population 229 goats, F2 ©FUNPEC-RP www.funpecrp.com.brGenetics Molecular Research 13 (4): 8530-8536 (2014) SNPs nematode infection goats offspring from...
Candidate genes in NeloreThe mean allele substitution effect was 6.9 kg, with the 229 associated reduced yearling weight this Nelore population.
Objetivou-se estimar a herdabilidade da característica habilidade de permanência (HP) em um rebanho bovinos raça Caracu visando sua utilização como critério seleção. A estudo foi definida probabilidade vaca estar presente no aos 48 (HP48), 60 (HP60) e 72 (HP72) meses, desde que possuíssem registros pelo menos duas lactações nas específicas idades. Observações binárias, com zero (0 = fracasso) (1 sucesso) foram designadas animais. Para análise HP, utilizados dados 5.487, 4.947 4.308 animais...
Analysis of a large number markers is crucial in both genome-wide association studies (GWAS) and selection (GWS). However there are two methodological issues that restrict statistical analysis: high dimensionality (p≫n) multicollinearity. Although methodologies can be used to fit models for data with (eg, the Bayesian Lasso), big problem occurs this cases predictive ability model should perform well individuals model, but not other individuals, restricting applicability model. This...
Abstract: The objective of this work was to evaluate the development morphometric characteristics Mangalarga Marchador horses through nonlinear models. transversal method used collect data on height at withers (HW), body length (BL), and thoracic (TP) cannon (CP) perimeters from 200 (75 males 125 non-pregnant females), aged between 6 153 months. parameters Brody, Gompertz, logistic, von Bertalanffy models were estimated using R software. Models compared selected coefficient determination,...
Summary Backfat thickness affects the preservation of beef carcass after slaughter and confers organoleptic characteristics assessed by consumer. One breeding goals for Canchim, a tropically adapted breed, is to comprehensively increase fat thickness. Our were identify genomic regions associated with backfat in Canchim populations validate association single nucleotide polymorphisms (SNPs) overlapping previously identified QTL known affect deposition. Fifteen animals lower 15 higher residues...
ABSTRACT: This study aimed to evaluate the logistic and quadratic response plateau models describe growth of Mangalarga Marchador horses identify model that best describes for variables height at withers body length. Data were used from 230 aged 6 176 months, divided by sex 16 age classes. All computational work was performed using R statistical software. The suited express in length male female Marchadors months. allowed creating a table reference values these measurements over time based...
Candidate gene region for control of rib eye area maximum likelihood method.After correction multiple tests, a significant effect microsatellite BMS490 on REA was observed, suggesting that at least one QTL affecting carcass traits in this the BTA5.No BFT observed these markers.
The objective was to evaluate the accuracy of six body weight (BW) estimating methods in Mangalarga Marchador horses (MM) (n = 318): method A - tape placements at three different positions around thoracic girth; B Crevat and Quetelec's formula; C Hall's D Hintz Griffiths’ table; E Santos’ F Cintra's formula. For additional analyses, gender, age, gestational stage were considered. Estimated average BW compared actual scale by paired T test, mean predicted error, determination coefficient. In...