A5065807603- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Effects of Environmental Stressors on Livestock
- Reproductive Biology and Fertility
- Animal Behavior and Welfare Studies
- Ovarian function and disorders
- Ruminant Nutrition and Digestive Physiology
- Toxoplasma gondii Research Studies
- Milk Quality and Mastitis in Dairy Cows
- Enterobacteriaceae and Cronobacter Research
- Meat and Animal Product Quality
- Bee Products Chemical Analysis
- Cassava research and cyanide
- Vector-Borne Animal Diseases
- T-cell and Retrovirus Studies
- Animal Genetics and Reproduction
- Phase Equilibria and Thermodynamics
- Nutrition and Health in Aging
- Growth Hormone and Insulin-like Growth Factors
- Reproductive biology and impacts on aquatic species
- Electrospun Nanofibers in Biomedical Applications
- Selenium in Biological Systems
- Peanut Plant Research Studies
- Animal health and immunology
- Viral Infections and Vectors
Universidade de São Paulo
2014-2024
Hospital Universitário da Universidade de São Paulo
2003-2023
Universidade Brasil
2019
Agência Paulista de Tecnologia dos Agronegócios
2015
Two experiments were conducted to investigate the effects of equine chorionic gonadotropin (eCG) at progestin removal and gonadotropin-releasing hormone (GnRH) timed artificial insemination (TAI) on ovarian follicular dynamics (Experiment 1) pregnancy rates 2) in suckled Nelore (Bos indicus) cows. Both 2x2 factorials (eCG or No eCG, GnRH GnRH), with identical treatments. In Experiment 1, 50 anestrous cows, 134.5+/-2.3 d postpartum, received a 3mg norgestomet ear implant sc, plus 5mg...
Abstract We aimed to evaluate the reproductive performance of Nelore lactating cows submitted a resynchronization 12 days after timed artificial insemination (TAI) with or without long‐acting progesterone (P4‐LA) treatment. were P4/oestradiol‐based TAI protocol (D0 = insemination). On D12, in control group ( n 184) received new P4 intravaginal device (0.96 g), whereas P4‐LA 192) and 75 mg P4‐LA. Cows identified as non‐pregnant 120) by regression corpus luteum using colour Doppler...
Abstract:Two ultrasound based fertility prediction methods were tested prior to embryo transfer (ET) and artificial insemination (AI) in cattle. Female bovines submitted estrous synchronization ET AI. Animals scanned immediately before AI procedure target follicle corpus luteum (CL) size vascularity. In addition, inseminated animals also eleven days after CL All data was compared with by using gestational diagnosis 35 ovulation. Prior ET, vascularity showed a positive correlation fertility,...
Induction protocols based on progesterone (P4) are used prior to a synchronization program for timed-AI (TAI) increase number of pubertal heifers and pregnancy per AI (P/AI). Injectable, long-lasting P4 (iP4) is novel, practical method supplement in cattle. Here, we aimed test the effect an induction protocol single injection iP4 P/AI heifers. Bos indicus (Nellore) were classified as (PUB; n = 224) or prepubertal (PRE; 414) two ovarian ultrasonographyc exams conducted 10 d apart. Heifers...
The objective of this study was to evaluate the efficiency synchronization ovulation protocol (GnRH/PGF 2 α/GnRH) for fixed timed insemination in buffalo.In Experiment 1, thirty-three female buffaloes with 60 days postpartum, were divided two groups evaluation follicular dynamics (Group n = 16, 10mg GnRH/15mg PGF α/10mg GnRH; Group 2, 17, 20mg GnRH).Ultrasonography exams performed every 12 hours verify ovarian response first GnRH injection.Another evaluations on α injection and second...
Abstract This work reports the synthesis of particles based on poly(3‐hydroxybutirate‐co‐3‐hydroxyvalerate) (PHBV) polymer that were impregnated with progesterone. The PHBV obtained by supercritical CO 2 (scCO ) anti‐solvent expansion (SAS). scCO was also used at a high pressure (25 MPa) and moderate temperature (323 K) for impregnation progesterone into different times. In vitro release tests showed half‐time in hydro‐alcoholic medium, samples produced times 2–32 h, 3–5 higher generally...
Quantitation of progesterone (P(4)) in biological fluids is often performed by radioimmunoassay (RIA), whereas liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) has been used much less often. Due its autoconfirmatory nature, LC-MS/MS greatly minimizes false positives and interference. Herein we report compare with RIA an optimized method for rapid, efficient, cost-effective quantitation P(4) plasma cattle no sample derivatization. The released from three nonbiodegradable,...