A5019527042- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Effects of Environmental Stressors on Livestock
- Animal health and immunology
- Reproductive System and Pregnancy
- Milk Quality and Mastitis in Dairy Cows
- Reproductive Biology and Fertility
- Aquaculture disease management and microbiota
- Animal Behavior and Welfare Studies
- Bacterial Identification and Susceptibility Testing
- Antibiotic Resistance in Bacteria
- Reproductive tract infections research
- Plant and fungal interactions
- Infections and bacterial resistance
- Livestock Management and Performance Improvement
- Probiotics and Fermented Foods
- Clostridium difficile and Clostridium perfringens research
- Mycobacterium research and diagnosis
- Viral gastroenteritis research and epidemiology
- Pharmaceutical and Antibiotic Environmental Impacts
- Bacteriophages and microbial interactions
- Microbial infections and disease research
- Research in Cotton Cultivation
- Invertebrate Immune Response Mechanisms
University of Florida
2016-2025
Florida College
2023-2024
Universidade Estadual Paulista (Unesp)
2015
Kerala Veterinary and Animal Sciences University
2014
Texas A&M University System
2013
Cornell University
2007-2011
New York State College of Veterinary Medicine
2011
The Ohio State University
2011
University of California, Davis
2003-2010
The emergence of antibiotic resistant microorganisms is a great public health concern and has triggered an urgent need to develop alternative antibiotics. Chitosan microparticles (CM), derived from chitosan, have been shown reduce E. coli O157:H7 shedding in cattle model, indicating potential use as antimicrobial agent. However, the underlying mechanism CM on reducing this pathogen remains unclear. To understand mode action, we studied molecular mechanisms activity using vitro vivo methods....
The objective of this study was to evaluate the progression uterine microbiota from calving until establishment metritis. Uterine swabs (n = 72) collected at 0, 2, and 6 ± 2 days postpartum (dpp) 12 metritic healthy cows were used for metagenomic sequencing 16S rRNA gene on Illumina MiSeq platform. A heat map showed that established calving. changed rapidly 0 dpp, with a decrease in abundance Proteobacteria an increase Bacteroidetes Fusobacteria, which dominant cows. composition shared;...
Metritis is an inflammatory disease of the uterus caused by bacterial infection, particularly Bacteroides, Porphyromonas, and Fusobacterium. Bacteria from environment, feces, or vagina are believed to be only sources uterine contamination. Blood seeps into after calving; therefore, we hypothesized that blood could also a seeding source bacteria. Herein, compared communities blood, samples same cows at 0 2 days postpartum using deep sequencing qPCR. The vaginal microbiome 7 before calving was...
The objective of this study was to estimate the cost metritis in dairy herds. Data from 11,733 cows 16 different farms located 4 regions United States were compiled for up 305 d milk, and 11,581 (2,907 with 8,674 without metritis) used study. Metritis defined as fetid, watery, red-brownish vaginal discharge that occurs ≤21 milk. Continuous outcomes such 305-d milk production, sales ($/cow), cow treatment costs replacement reproduction feeding gross profit per ($/cow) analyzed using mixed...
The objectives of this study were to determine the effects incorporating a progesterone intravaginal insert (CIDR) between day GnRH and PGF2α treatments timed AI protocol using estradiol cypionate (ECP) synchronize ovulation on display estrus, rate, pregnancy late embryonic loss in lactating cows. Holstein cows, 227 from Site 1 458 2, presynchronized with two injections d 0 14, subjected (100 μg 28, 25 mg 35, ECP 36, 38) or without CIDR insert. Blood was collected 14 28 for measurements...
The objective was to compare reproductive performance of breeding programs that used natural service (NS), AI after estrus detection (ED), and timed (TAI). In experiment 1, 597 suckled beef cows were randomly allocated one four groups. Cows in the TAI+NS group (N = 150) bred by TAI at 11 days onset season (BS). Bulls placed with 10 remained together until end 90-day BS. TAI+ED+NS 148) received TAI, then based on ED for next 45 days, finally NS last ED+NS 147) during first BS, followed 149)...
Antibiotic resistance is growing exponentially, increasing public health concerns for humans and animals. In the current study, we investigated antimicrobial features of chitosan microparticles (CM), engineered from by ion gelation, seeking potential application treating infectious disease caused multidrug resistant microorganisms. CM showed excellent activity against a wide range microorganisms, including clinically important antibiotic-resistant pathogens without raising mutants in serial...
The objective of this study was to characterize incidences health disorders during early lactation in a large population Holstein cows calving 2 seasons across multiple US dairy herds. In addition, cumulative effects combinations health-related events on fertility and survival by season parity number were tested. Data prospectively collected from total 11,729 16 herds located regions the United States [north (7,820 10 herds) south (3,909 6 herds)]. Cows enrolled at parturition monitored...