A5027387872- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Effects of Environmental Stressors on Livestock
- Reproductive System and Pregnancy
- Ruminant Nutrition and Digestive Physiology
- Reproductive Biology and Fertility
- Animal health and immunology
- Genetic Mapping and Diversity in Plants and Animals
- Parasitic Infections and Diagnostics
- T-cell and Retrovirus Studies
- Heat shock proteins research
- Sunflower and Safflower Cultivation
- Vasculitis and related conditions
- Agricultural Systems and Practices
- Endometriosis Research and Treatment
- Diagnosis and treatment of tuberculosis
- Animal Nutrition and Physiology
- Science and Education Research
- Agriculture and Rural Development Research
- Animal Genetics and Reproduction
- Coccidia and coccidiosis research
- Metallurgy and Material Forming
- Microbial infections and disease research
- Meat and Animal Product Quality
- Parasitic infections in humans and animals
University of Missouri
2024-2025
Mississippi State University
2022-2024
University of Florida
2018-2023
Universidade de São Paulo
2015-2018
Fort Keogh Livestock and Range Research Laboratory
2018
Universidade Estadual Paulista (Unesp)
2012-2016
Fundação de Estudo e Pesquisa em Medicina Veterinária e Zootecnia
2012-2016
The bovine pre-implantation embryo secretes bioactive molecules from early development stages, but effects on endometrial function are reported to start only after elongation. Here, we interrogated spatially defined regions of the endometrium transcriptome for responses a day 7 in vivo. We hypothesize that exposure an changes abundance specific transcripts cranial region pregnant uterine horn. Endometrium was collected uterotubal junction (UTJ), anterior (IA), medial (IM) and posterior (IP)...
Pregnancy establishment in cattle is contingent on conceptus elongation—a fundamental developmental event coinciding with the time during which most pregnancies fail. Elongation vivo directly driven by uterine secretions, indirectly influenced systemic progesterone concentrations, and has yet to be recapitulated vitro. To better understand microenvironment evolved facilitate this phenomenon, amino acid carbohydrate composition of fluid was interrogated using high-throughput metabolomics days...
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...
A major, unresolved issue is how the uterine microenvironment determines pregnancy success in cattle. Before implantation, conceptus development depends on secretome (i.e., histotroph). Despite its pivotal role, little known about dynamics of histotroph synthesis and changes composition throughout early diestrus relevance to establishment. We hypothesize that disturbances affect establishment pregnancy. Aim was disturb at verify effects on: (Exp. 1) timing restore composition; 2) rate after...
In cattle, starting 4–5 days after estrus, preimplantation embryonic development occurs in the confinement of uterine lumen. Cells endometrial epithelial layer control molecular traffic to and from lumen and, thereby determine luminal composition. Starting early postestrus, function is regulated by sex steroids, but effects progesterone on cells transcription have not been measured vivo. The first objective was extent which controls 4 (D4) estrus. second discover transcripts that predict...
Abstract Sex steroid concentrations modulate endometrial function and fertility in cattle. Our objective was to compare the post-estrus luminal transcriptome of cows that were exposed contrasting progesterone (P4) before luteolysis displayed estrus ovulated spontaneously. Cross-bred beef received either (1) a new CIDR GnRH (day −9; high treatment; HP4; n = 16) or (2) previously used CIDR, PGF2α, (low LP4; 24). All PGF2α at removal −2). Ovarian ultrasonography blood collections performed on...
Abstract This 2-yr study investigated the timing of dried distillers grains (DDG) supplementation during third trimester gestation Bos indicus-influenced beef cows and its impact on their offspring performance. On day 0 each year (84 d before calving), Brangus (n = 84/yr; cow age 8 ± 3 yr) were stratified by initial body weight (BW; 482 75 kg) condition score (BCS; 5.3 0.8) assigned randomly to one six bahiagrass (Paspalum notatum) pastures (experimental units; 14 cows/pasture). Treatments...
Abstract This 2-yr study evaluated the effects of winter vs. year-round supplementation Bos indicus-influenced beef cows on cow reproductive performance and impact their offspring. On day 0 each year (approximately 122 ± 23 gestation), 82 to 84 mature Brangus cows/yr were stratified by body weight (BW; 475 67 kg) condition score (BCS; 4.85 0.73) randomly assigned 1 6 bahiagrass (Paspalum notatum) pastures (13 14 cows/pasture). Treatments consisting with molasses + urea (WMOL), or (YMOL)...
This study evaluated the association between proportion of Brahman genetics and productivity Brahman-Angus cows at weaning using a 31-yr dataset containing 6,312 5,405 pregnancies. Cows were contemporaneously reared enrolled in yearly breeding seasons under subtropical conditions North-Central Florida. They evenly distributed six-breed groups (G) according to genetics: G0% 19%, G21% 34%, G38% (Brangus), G41% 59%, G63% 78%, G81% 100%. The calving (84.9%) did not differ across groups. However,...
Insufficient production of anti-luteolytic signals by the pre-attachment embryo is considered a major cause pregnancy failure in cattle. We tested hypothesis that transfer multiple blastocysts (n = 5/recipient) and progesterone (P4) supplementation amplify signaling reduce embryonic losses beef Cows detected estrus (D0; n 104) were assigned randomly to receive 150 mg injectable long-acting P4 (iP4) or vehicle (non-iP4) on D4 transcervical none five, grade 1, not-frozen, vitro-produced...