A5031349911- Genetic and phenotypic traits in livestock
- Effects of Environmental Stressors on Livestock
- Livestock Management and Performance Improvement
- Genetic Mapping and Diversity in Plants and Animals
- Animal Nutrition and Physiology
- Genetics and Plant Breeding
- Meat and Animal Product Quality
- Reproductive Physiology in Livestock
- Fatty Acid Research and Health
- Mollusks and Parasites Studies
- Aquatic Invertebrate Ecology and Behavior
- Animal Behavior and Welfare Studies
- Animal Genetics and Reproduction
- Cancer-related molecular mechanisms research
- Infrared Thermography in Medicine
- Animal testing and alternatives
- Science and Education Research
- Phytochemistry Medicinal Plant Applications
- Milk Quality and Mastitis in Dairy Cows
- Reproductive Biology and Fertility
- Parasite Biology and Host Interactions
- Helminth infection and control
- Congenital heart defects research
- Agriculture Sustainability and Environmental Impact
- Livestock and Poultry Management
Universidade Federal de Viçosa
2020-2025
Universidade de São Paulo
2018-2022
Methodist University of Piracicaba
2021
Federal University of São João del-Rei
2017-2020
Secretaria de Agricultura e Abastecimento
2018
Abstract Measurements of milk yield (MY), somatic cell score (SCS), percentage fat (FP), protein (PP), lactose (LP), casein (CP) and palmitic (C16:0), stearic (C18:0), oleic (C18:1), total saturated (SFA), unsaturated (UFA), monounsaturated (MUFA) polyunsaturated (PUFA) fatty acids in from 5,224 Holstein cows were evaluated as a function temperature humidity index (THI). Legendre orthogonal polynomials second to seventh order tested. The best fit for MY, PP C18:0 was the third, whereas all...
The aim of this study was to estimate genetic parameters for 305-day cumulative milk yield and components, growth, reproductive traits in Guzerá cattle.The evaluated were first-lactation yields (kg) (MY305), fat (FY305), protein (PY305), lactose (LY305), total solids (SY305); age at first calving (AFC) days; adjusted scrotal perimeter (cm) the ages 365 (SP365) 450 (SP450) body weight 210 (W210), (W365), (W450) days. (co)variance components estimated using restricted maximum likelihood method...
Abstract Background The selection of individuals based on their predicted breeding values and mating related can increase the proportion identical-by-descent alleles. In this context, objectives study were to estimate inbreeding coefficients alternative metrics data sources such as pedigree (FPED), hybrid genomic relationship matrix H (FH), ROH different length (FROH); calculate Pearson correlations between in a closed Nellore cattle population selected for body weight adjusted 378 days age...
Since pre- and postnatal development are programmed during early prenatal life, studies addressing the complete transcriptional landscape organogenesis needed. Therefore, we aimed to disentangle differentially expressed (DE) genes between fetuses (at 35 days old) embryos 25 through RNA-sequencing analysis using pig as model. In total, 1705 were DE, including top DE IBSP, COL6A6, HBE1, HBZ, HBB, NEUROD6 genes, which associated with developmental transition from fetuses, such ossification,...
The Guzerá breed evolved from the introduction of breeds India, mainly Kankrej breed, into Brazilian livestock at end 19th century. adapted well to climatic conditions Brazil, where it is considered a dual-purpose and has been used for pasture-based beef, milk or production systems with use low-medium inputs. importance this genetic resource in tropical regions moved breeders implement National Breeding Program Improvement 1994, based on both progeny testing MOET nucleus schemes. We sought...
Abstract For decades, inbreeding in cattle has been evaluated using pedigree information. Nowadays, coefficients can be obtained genomic information such as runs of homozygosity (ROH). The aims this study were to quantify ROH and heterozygosity‐rich regions (HRR) a subpopulation Guzerá dual‐purpose cattle, examine HRR islands, compare by with alternative coefficients. A 1733 animals genotyped for 50k SNPs was used obtain the segments. Inbreeding ( F ), relationship matrix based on VanRaden's...
In causal relationship studies, the latent variables may summarize phenotypes in theoretical traits according to their phenotypic correlations, improving understanding of relationships between broilers phenotypes. this study, we aimed investigate potential among using a structural equation model context genetic analysis. The data used study comprised 14 with 2,017 records each, and 104,154 animals pedigree. Four (WEIGHT, LOSSES, COLOUR, VISCERA) were defined validated Bayesian Confirmatory...
ABSTRACT The aim was to estimate the heritabilities for accumulated weight gain between 60 and 90 days (WG1), 120 (WG2) 150 of age (WG3), pre‐slaughter body (PRE), meat‐to‐shell ratio (MS), carcass yield (CY) at first oviposition (AFO) in a population snails Cornu aspersum maximum . Single (for heritabilities) bi‐trait genetic correlations) analyses were performed using Bayesian inference. animal model included random effect systematic effects contemporary groups covariates. heritability...
Context Reproductive technologies may either contribute to the increase of genetic gains or inbreeding levels in dairy cattle breeding programs and herds. In general, studies have evaluated impacts on traditional traits, such as production reproduction. However, novel milk fatty acids profile, are scarce literature. Aim We aimed evaluate impact profile measured a Brazilian Holstein population. Methods Monthly records percentages (%) palmitic, stearic, oleic, total saturated, unsaturated,...
A gordura do leite é composta, predominantemente, por ácidos graxos. O bovino apresenta alta concentração de graxos saturados, alguns associados ao aumento risco doenças cardiovasculares em humanos. Porém, muitos desses, possuem efeitos neutros ou positivos sobre a saúde, assim como insaturados. perfil da bovinos pode ser alterado suplementação lipídica maneira rápida e eficiente, porém, verifica-se também variação genética nesse o melhoramento genético se torna mais relevante que apresentar...
Genomic tools can help in the selection of animals genetically resistant to heat stress, especially genome-wide association studies (GWAS). The objective this study was compare variance explained by SNPs and direct genomic breeding values (DGVs) at two levels a temperature humidity index (THI). Records milk yield (MY), somatic cell score (SCS), percentages casein (CAS), saturated fatty acids (SFA), unsaturated (UFA) from 1157 Holstein cows were used. Traditional (EBV) determined previous...
Evaluation of genetic and phenotypic trends is important to monitor the evolution dairy cattle breeding programs. Traits that are not commonly included as selection goals should also be monitored, especially when they have some effect on consumer health, such milk fatty acids profile. Thus, aim was evaluate composition a Holstein population, from three farms, reared in tropical environment. Monthly records palmitic (C16:0), stearic (C18:0), oleic (C18:1), total saturated (SFA), unsaturated...
Abstract This study aimed to investigate the feasibility of genomic prediction for productive and reproductive traits in Guzerá cattle using single-step BLUP (ssGBLUP). Evaluations included 305-day cumulative yields (first lactation, kg) milk, lactose, protein, fat, total solids; adjusted body weight (kg) at ages 450 days, 365 210 days; age first calving (in days), from a database containing 197,283 measurements males females born between 1954 2018. The pedigree 433,823 animals spanning up...