A5027958120- Genetic and phenotypic traits in livestock
- Genetic Mapping and Diversity in Plants and Animals
- Reproductive Physiology in Livestock
- Ruminant Nutrition and Digestive Physiology
- Genetics and Plant Breeding
- Reproductive Biology and Fertility
- Milk Quality and Mastitis in Dairy Cows
- Cancer-related molecular mechanisms research
- Animal Genetics and Reproduction
- Plant and fungal interactions
- Genomics and Phylogenetic Studies
- Adipose Tissue and Metabolism
- Lipid metabolism and biosynthesis
- Heart Rate Variability and Autonomic Control
- Livestock Management and Performance Improvement
- Mycotoxins in Agriculture and Food
- Peroxisome Proliferator-Activated Receptors
- FOXO transcription factor regulation
- Agroforestry and silvopastoral systems
- Ovarian function and disorders
- Effects of Environmental Stressors on Livestock
- Animal Behavior and Welfare Studies
- Veterinary Equine Medical Research
- Metabolism and Genetic Disorders
- Rural Development and Agriculture
Universidade Federal Rural do Rio de Janeiro
2019-2024
Universidade Estadual Paulista (Unesp)
2015-2020
Hospital do Coração
1990
Universidade de São Paulo
1990
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...
An important goal of Zebu breeding programs is to improve reproductive performance. A major problem faced with the genetic improvement traits that recording time for an animal reach sexual maturity costly. Another issue accurate estimates values are obtained only a long after young bulls have gone through selection. alternative overcome these problems use indicators efficiency herd and easier measure, such as age at first calving. heifers conceived once may fail conceive in next season,...
Fertility traits, such as heifer pregnancy, are economically important in cattle production systems, and therefore, used genetic selection programs. The aim of this study was to identify single nucleotide polymorphisms (SNPs) using RNA-sequencing (RNA-Seq) data from ovary, uterus, endometrium, pituitary gland, hypothalamus, liver, longissimus dorsi muscle, adipose tissue 62 candidate genes associated with puberty cattle. RNA-Seq reads were assembled the bovine reference genome (UMD 3.1.1)...
The liver plays a central role in metabolism and produces important hormones. Hepatic estrogen receptors the release of insulin-like growth factor one (IGF1) are critical links between function reproductive system. However, pubertal development is not fully understood. To explore this question, we applied transcriptomic analyses to samples pre- post-pubertal Brahman heifers identified differentially expressed (DE) genes encoding transcription factors (TF). Differential expression suggest...
The objective of this study was to identify associations between known polymorphisms in genes related adipose tissue and sexual precocity Nellore cattle.A total 1689 precocious nonprecocious heifers belonging farms participating Conexão Delta G breeding program were studied.SNPs from the Illumina High-Density Bovine SNP BeadChip used.This chip contains 777,000 SNPs located within region candidate at a distance up 5 kb, considering that linkage disequilibrium (LD) exists distance.Linear...
QTL mapping through genome-wide association studies (GWAS) is challenging, especially in the case of low heritability complex traits and when few animals possess genotypic phenotypic information. When most information from non-genotyped animals, GWAS can be performed using weighted single-step GBLUP (WssGBLUP) method, which permits to combine all available information, even that animals. However, it not clear what extent increases power detection, whether factors such as linkage...
Reproductive traits are of the utmost importance for any livestock farming, but difficult to measure and interpret since they influenced by various factors. The objective this study was detect associations between known polymorphisms in candidate genes related sexual precocity Nellore heifers, which could be used breeding programs. Records 1,689 precocious non-precocious heifers from farms participating Conexão Delta G program were analyzed. A subset single nucleotide (SNP) located region at...
We evaluated the genetic association of growth traits [weight adjusted to 205 days age (W205), 365 (W365), and 550 (W550); weight gain between (WG1) (WG2)] reproductive [age at first calving (AFC); interval (FCI)] with stayability in herd (STAY), using Bayesian inference linear threshold models.We defined STAY as probability a cow three or more times before 76 months, given that she had calved least once.We assigned binary codes (0, failure; 1, success) each female.We used sire model for...
Study of pressor response to graded, increased doses infused norepinephrine in patients with essential hypertension, their normotensive siblings, and control subjects unrelated the without a family history hypertension indicated an two former groups. Comparison dose-response curves three groups showed that difference was due reduced threshold siblings not differences slopes curves. These alterations were paralleled by heart rate responses.
MUC1 is a glycoprotein mucin expressed in apical cells of luminal tissues, such as mammary gland cells, which the main function protect cell surface from environment microorganisms. The aim this study were to identify polymorphism gene Murrah breed and analyze association between molecular marker somatic counting, milk yield, fat percentage, protein age at first calving interval. A total 179 primiparous buffaloes genotyped by PCR technique. Milk-recording performed periodically determine...
Anti-Müllerian Hormone (AMH) is a protein expressed in the gonads and related to ovarian follicular development. The aim of this study was investigate presence polymorphisms AMH gene Nelore herd analyze genetic constitution population perform association studies with early pregnancy occurrence (EPO) age at first calving (AFC). Phenotypic data consisted verification 197 unrelated heifers exposed mating season aged between 15 17 months (precocious group) 24 (non-precocious group). "precocious"...
In intensive beef cattle production systems, silage, corn, soy bean, and their coproducts are commonly used as feed. However, these ingredients highly susceptible to contamination by fungi mycotoxins, which may lead immunological challenges reduce animal production. The aim of the present study was evaluate effects mycotoxin diet on intake, digestibility, performance heifers. Twenty non-pregnant (Nellore) heifers (age, >18 months; initial body weight, 348±30 kg) were randomly distributed...
Abstract Milk production is an important economic activity in Brazil. Dairy farmers would benefit from animal breeding programs that aid identification and selection of animals with the best cost/benefit ratio to maximize productivity, additionally provide advice on disposal less productive animals. This study aims estimate heritability repeatability milk corrected for 305 days (PL305) a herd Girolando cattle. We analyzed 528 lactations 251 cows. For analysis, uniform priori distribution was...
Context Genomic tools allow for increased efficiency in animal production and, consequently, greater gains. Morphometric measurements of height can be used breed characterisation/registration, and sex distinction, addition to being associated with balance, posture, the range motion limbs, influencing dynamics quality gait. Aims This study was conducted examine candidate genes related morphometric measurement heights Campolina horses. Methods The involved information from 18 876 horses this...