A5022386612- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Reproductive Biology and Fertility
- Effects of Environmental Stressors on Livestock
- Ruminant Nutrition and Digestive Physiology
- Sperm and Testicular Function
- Animal health and immunology
- Milk Quality and Mastitis in Dairy Cows
- Reproductive System and Pregnancy
- Rural Development and Agriculture
- Animal Genetics and Reproduction
- Ovarian function and disorders
- Livestock Management and Performance Improvement
- Animal Behavior and Welfare Studies
- Animal Virus Infections Studies
- Agriculture Sustainability and Environmental Impact
- Animal Nutrition and Physiology
- Academic Research in Diverse Fields
- Agricultural and Food Sciences
- Aquaculture disease management and microbiota
- Assisted Reproductive Technology and Twin Pregnancy
- T-cell and Retrovirus Studies
- Impact of AI and Big Data on Business and Society
- Healthcare Regulation
- Bacillus and Francisella bacterial research
Universidade Federal de Uberlândia
2015-2024
Weatherford College
2022
Energias de Portugal (Portugal)
2021
Fundação de Apoio a Pesquisa do Estado de Goiás
2015
Universidade Estadual Paulista (Unesp)
2002-2013
Yale Cancer Center
2010
Autonomous University of Yucatán
2006
Texas Health Dallas
1996
Genomic evaluations have revolutionized dairy cattle breeding, and the demand for embryos produced from very young heifers with high genetic merit has increased over time. The combination of low oocyte recovery, age donors, milk production status can make in vitro embryo (IVP) Holstein incredibly challenging. Several factors need to be coordinated obtain a live calf an IVP embryo, but quality at start process is one key factors. Aspects related quality, laboratory control, recipient...
In order to provide information that may help researchers understand the main cause(s) of differences in bull fertility frequently observed field trials, this study aimed investigate conception rates as well several vitro sperm characteristics different sires unknown utilized a Timed-AI (TAI) program. Suckled Nelore cows submitted same TAI protocol were allocated into eight breeding groups approximately 120 animals each. Frozen semen doses from three Angus bulls and batches each utilized....
The objective was to determine the effect of sequence insemination after simultaneous thawing multiple 0.5 mL semen straws on conception rate in suckled multiparous Nelore cows. this procedure vitro sperm characteristics also evaluated. All cows (N = 944) received same timed AI protocol. Ten (0.5 mL) frozen from batch were simultaneously thawed at 36 °C, for a minimum 30 sec. One straw per cow used AI. Frozen three Angus bulls used. Timed records included (first tenth) and time removal bath....
The objective of this study was to characterize acrosomal ultrastructure following discontinuous Percoll gradient centrifugation cryopreserved bovine sperm. Semen collected from six bulls different breeds and three ejaculates per bull were evaluated. Frozen semen samples thawed the region sperm cells evaluated by transmission electron microscopy (TEM) before (n = 18) after centrifugation. evaluation 20 heads each 36 analyzed ensured that a large number investigated. data subjected analysis...
Abstract Cataracts are lens opacities that account for approximately 10% of blindness in children. We report on four consecutive pregnancies a woman at risk recurrent autosomal dominant cataracts which extensive ultrasound studies were helpful establishing the correct diagnosis. The normal appearance fetal is ring with central sonolucency, but cases appears hyperechogenic to various degrees. In first pregnancy, lenses seen 15 postmenstrual weeks and, birth, baby girl had lenses. second male...
This study was designed to monitor the biochemical profiles of serum and follicular fluid (FF) postpartum dairy cows during summer (n=30) winter (n=30). Blood FF (follicles ≥ 9 mm) were obtained from Girolando at 30, 45, 60, 75 90 days postpartum. The samples collected analysed determine glucose, total cholesterol (TC), triglyceride (TG), urea, sodium (Na), potassium (K) calcium (Ca) levels. Throughout study, following clinical variables measured: rectal temperature (RT), respiratory rate...
RESUMO: Objetivou-se avaliar os efeitos do tipo de parto (eutócico vs. distócico) e período ano (chuvoso seco) sobre a prevalência retenção placenta (RP) endometrite subclínica (ES), verificar relação entre as duas patologias, dessas taxa descarte, o serviço (PS) número IA/concepção. A RP foi avaliada no primeiro dia pós-parto (DPP). citologia endometrial realizada 30 80 DPP, considerando positivos casos contendo acima 5% neutrófilos. Os dados foram analisados por regressão logística análise...
Avaliaram-se resultados de 1100 transferências embriões, realizadas novembro 2008 a fevereiro 2009, em um programa comercial produção embriões. Foram utilizados embriões ½ Holandês/Gir (n=139) e ¾ (n=961) qualidade oitavo dia (D8) para transferência fresco. As receptoras foram novilhas Nelore/Simental, sincronizadas, usando-se o protocolo: zero (D0) - introdução do dispositivo intravaginal com 1g progesterona + 2mg benzoato estradiol (BE); 5 (D5) aplicação 150μg D-cloprostenol (PGF2α) 400UI...
Vacas da raça Holandesa não-lactantes (n=7), que receberam 4kg/dia de concentrado durante 28 dias e pasto ad libitum, foram sincronizadas com protocolo Ovsynch. No dia 0 (segunda aplicação GnRH), as vacas distribuídas em dois grupos: do grupo 2kg 2kg/dia, 8kg 8kg/dia concentrado, oferecido duas vezes/dia. Os animais sincronizados novamente na fase 2. Aqueles primeira passaram a receber segunda vice-versa. As estruturas ovarianas avaliadas diariamente por ultra-sonografia. Amostras sangue...
Avaliou-se, durante um ano, o desempenho reprodutivo de 94 vacas leiteiras mestiças Bos taurus x indicus submetidas a programa reprodução assistida. Um protocolo inseminação artificial em tempo fixo (IATF) foi executado por meio dispositivo intravaginal contendo progesterona e das injeções prostaglandina F2α cipionato estradiol. Por ultrassonografia, entre 7 14 dias após as inseminações ou montas controladas, realizou-se detecção corpo lúteo nos ovários fim determinar taxa ovulação e, no 28º...
This study aimed to evaluate the effects of rectal temperature (RT) on conception rate (CR), as well seasonality (spring-summer vs. autumn-winter) and timing artificial insemination (AI) (morning afternoon) RT CR in crossbred dairy cows (Holstein x Gyr). The experiment was conducted a farm Centralina, MG, where 1,219 conventional fixed-time inseminations were analyzed. measured immediately before AI using digital thermometer. Pregnancy diagnosis performed ultrasonography between 28 60 days...
Abstract The objective of this study was to evaluate the influence gestation length, season at calving (autumn-winter vs. spring-summer) and calf sex on birth weight incidence retained placenta (RP) in crossbred lactating dairy cows. A total 187 parturitions were evaluated a commercial farm Alto Paranaiba region, Minas Gerais, Brazil. Cows that did not release placental membranes within first 12 hours after expulsion diagnosed with RP. At birth, registered, estimated by using weighing tape....
The aim of this study was to investigate the effect Kisspeptin (Kp) on medium used in different stages vitro production bovine embryo (IVEP), evaluating cleavage (CR) and blastocyst (BR) rates. divided into three experiments that analyzed, respectively, action Kp maturation (IVM), fertilization (IVF), culture (IVC) embryos. In experiment 1, oocytes were matured IVM distributed following treatments: (IVM Control, n = 102), with addition 10-7 M (Kp IVM, 90), hormone-free luteinizing hormone...