A5028108743- Reproductive Physiology in Livestock
- Reproductive Biology and Fertility
- Genetic and phenotypic traits in livestock
- Effects of Environmental Stressors on Livestock
- Animal Genetics and Reproduction
- Sperm and Testicular Function
- Ovarian function and disorders
- Bioenergy crop production and management
- Reproductive System and Pregnancy
- Seed Germination and Physiology
- Milk Quality and Mastitis in Dairy Cows
- Pluripotent Stem Cells Research
- Animal Disease Management and Epidemiology
- Rural Development and Agriculture
- Endometriosis Research and Treatment
- T-cell and Retrovirus Studies
- Vector-Borne Animal Diseases
- Animal Behavior and Welfare Studies
- Ruminant Nutrition and Digestive Physiology
- Sunflower and Safflower Cultivation
- Brucella: diagnosis, epidemiology, treatment
- bioluminescence and chemiluminescence research
- Effects and risks of endocrine disrupting chemicals
- Growth Hormone and Insulin-like Growth Factors
- Ectopic Pregnancy Diagnosis and Management
Universidade Federal do Acre
2015-2024
Universidade Estadual Paulista (Unesp)
2006-2021
Fundação de Tecnologia do Estado do Acre
2016
Universidade de São Paulo
2008-2014
Medecell (Brazil)
2010
Universidade Federal de Uberlândia
2002
Heat stress is an important cause of poor development and low survival rates in bovine embryos. Experiments were conducted to test the hypothesis that Bos indicus embryos are more resistant heat than taurus In experiment 1, Nelore Jersey from oocyte pick-up-derived oocytes submitted (96 hours post-insemination, 41 °C, 6 hours), developmental ratios assessed at Day 7 (Day 0 = day fertilization), blastocysts frozen for RNA extraction. Experiment 2 evaluated expression COX2, CDX2, HSF1, PLAC8...
Bovine papillomaviruses (BPVs) have been widely characterized from cutaneous warts in cattle worldwide. However, there are still limited studies addressing the geographic distribution of viral types and their potential associations with histopathological characteristics lesions, particularly vast ecologically diverse Amazon region. This study aimed to histologically phylogenetically characterize papillomatous lesions Vale do Guaporé, located Brazilian Western Amazon. A total 54 wart samples...
The objective was to evaluate reproductive tract development (ovary and uterus) onset of puberty in two lines Nellore heifers (Bos indicus) selected for postweaning weight. A total 123 heifers, including 46 from the control line (NeC) 77 selection (NeS) were used. Every 18 21 days 12 24 months age, average ovarian area (OVA), endometrial thickness (ETh), diameter largest follicle each ovary evaluated (using transrectal ultrasonography), body weight, hip height, condition score measured....
Multiple ovulation (superovulation) and embryo transfer has been used extensively in cattle. In the past decade, superstimulatory treatment protocols that synchronise follicle growth ovulation, allowing for improved donor management fixed-time AI (FTAI), have developed zebu (Bos indicus) European taurus) breeds of There is evidence additional stimulus with LH (through administration exogenous or equine chorionic gonadotrophin (eCG)) on last day protocol, called 'P-36 protocol' FTAI, can...
The present study determined the transcriptome profile in Nelore and Holstein oocytes subjected to heat shock during IVM mRNA abundance of selected candidate genes heat-shocked cumulus cells (CC). cows were vivo follicle aspiration. Cumulus-oocyte complexes assigned control (38.5°C, 22h) or (41°C for 12h, followed by 38.5°C 10h) treatment IVM. Denuded bovine microarray analysis. Transcriptome analysis demonstrated 127, nine six differentially expressed between breed, temperature...
This study aimed to evaluate the occurrence rate of bovine brucellosis and tuberculosis in dairy herds Acre State, Brazil. The survey was performed on 487 lactating cows distributed across 27 farms seven cities from June 2018 February 2019. Farms were selected according following criteria: volume milk production (150 L/day), distance an urban perimeter (43 km), time activity (12 years). For diagnosis brucellosis, buffered acidified plate antigen (BAPA) complement fixation (CF) tests used....
The aim of this study was to evaluate the effect follicular fluid collected from bovine dominant follicles (bFF) on in vitro development goat preantral and determine best time add supplement culture medium. were isolated randomly distributed into four treatments absence (control) or presence 10% bFF added Days 0 (FF0-18), 6 (FF6-18) 12 (FF12-18) onwards. After 18 days, assessed based survival, antral cavity formation, increased diameter as well fully grown oocyte (>110 μm) viability meiosis...
Studies have shown that the use of equine chorionic gonadotropin (eCG), which binds both follicle stimulating hormone (FSH) and luteinizing (LH) receptors, could modify female reproductive tract. We, thus, aimed to quantify messenger RNA (mRNA) abundance genes related cumulus-oocyte complexes (COCs) embryo quality in Nelore cows (Bos taurus indicus) submitted ovarian superstimulation using only FSH (FSH group; n = 10) or replacement last two doses by eCG (FSH/eCG 10). All animals were...
During bovine follicular development, there is a phase known as deviation in which the future dominant follicle grows faster than other follicles and acquires LH receptors (LHR). In Nellore breed, occurs 2.5 days after ovulation, at this time, has average diameter of 6.0 mm. Some authors believe that LHRs are present before essential for process. However, others convinced only during or deviation. The aim experiment was to evaluate expression 4 LHR isoforms (M1 M4) granulosa cells from...
Contents Follicular estradiol triggers luteolysis in cattle. Therefore, the control of follicle growth and steroidogenesis is expected to modulate luteal function might be used as an anti‐luteolytic strategy improve embryo survival. Objectives were evaluate follicular dynamics, plasma concentrations lifespan Bos indicus crossbred cows subjected sequential aspirations. From D13 D25 a synchronized cycle (ovulation = D1), Nelore or crossbred, non‐pregnant non‐lactating submitted daily...