A5032890491- Reproductive Physiology in Livestock
- Ruminant Nutrition and Digestive Physiology
- Genetic and phenotypic traits in livestock
- Enterobacteriaceae and Cronobacter Research
- Effects of Environmental Stressors on Livestock
- Wheat and Barley Genetics and Pathology
- Reproductive System and Pregnancy
- Gut microbiota and health
- Metabolomics and Mass Spectrometry Studies
- Ovarian function and disorders
- Genetic Mapping and Diversity in Plants and Animals
- Livestock Management and Performance Improvement
- Pelvic floor disorders treatments
- Animal health and immunology
- Agriculture and Farm Safety
- Animal Behavior and Welfare Studies
- Reproductive Biology and Fertility
- Milk Quality and Mastitis in Dairy Cows
- Agricultural Systems and Practices
University of Florida
2020-2025
Washington State University
2023-2025
Abstract Genetic selection has remarkably helped U.S. dairy farms to decrease their carbon footprint by more than doubling milk production per cow over time. Despite the environmental and economic benefits of improved feed efficiency, there is a critical need explore phenotypical variance for utilization advance long-term sustainability farms. Feed major expense in operations, enteric fermentation source greenhouse gases agriculture. The challenges expanding phenotypic database, especially...
Abstract This study investigated differences in uterine and serum metabolome associated with clinical cure failure of metritis dairy cows. Metritis was diagnosed lactating Holstein cows from two Florida dairies defined by the presence fetid, watery, reddish-brown vaginal discharge 4 to 12 days postpartum (dpp). Cows (n = 24) were paired without similar parity dpp 24). On day diagnosis (day 0), all received antimicrobial therapy. The continued on 5 16) as failure, whereas its absence 8)....
The rumen microbiome is crucial for converting feed into absorbable nutrients used milk synthesis, and the efficiency of this process directly affects profitability sustainability dairy industry. Recent studies have found that microbial composition explains part variation in traits, including dry matter intake, energy, residual intake. main goal study was to reveal relationships between host genome, microbiome, cow using structural equation models. Our specific objectives were (1) infer...
Objectives were to evaluate differences in the uterine and serum metabolomes associated with metritis dairy cows. Vaginal discharge was evaluated using a Metricheck device (Simcro) at 5, 7, 11 d milk (DIM; herd 1) or 4, 6, 8, 10, 12 DIM (herd 2). Cows reddish brownish, watery, fetid diagnosed (n = 24). paired herdmates without (i.e., clear mucous vaginal lochia ≤50% of pus) based on parity Day diagnosis considered study 0. All cows received antimicrobial therapy. The metabolome lavage...
It is now widely accepted that dairy cow performance influenced by both the host genome and rumen microbiome composition. The contributions of to phenotypes interest are quantified heritability (h
Objectives were to determine the effects of 2 dietary microbial additives supplemented diets Holstein cows on productive performance and feed efficiency. One-hundred 17 enrolled at 61 d (31 87 d) postpartum in a randomized complete block design experiment. Cows blocked by parity group, as nulliparous or multiparous and, within parity, pre-treatment energy-corrected milk yield. Within block, randomly assigned one 3 treatments administered top-dress for 140 d. Treatments consisted either 100 g...
Feed efficiency is critical in dairy farming, impacting production costs and environmental sustainability. The development of the trait residual feed intake (RFI) has provided an opportunity to select cows that are more efficient converting nutrients into milk. Note RFI requires individual daily records, which typically collected on a limited number research farms. In this context, identification biomarkers can be used identify feed-efficient great interest. As such, study aimed ruminal...
Abstract Less invasive rumen sampling methods, such as oro-esophageal tubing, became widely popular for exploring the microbiome and metabolome. However, it remains unclear if methods represent well contents from cannula technique. Herein, we characterized metabolome in content collected by an tube ten multiparous lactating Holstein cows. The 16S rRNA gene was amplified sequenced using Illumina MiSeq platform. Untargeted gas chromatography of a time-of-flight mass spectrometer. Bacteroidetes...
The objective of this study was to identify metabolites associated with metritis and use them for identification cellular mechanisms affected during transition into lactation. Holstein cows (n = 104) had blood collected in the prepartum period (d -14 ± 6 relative calving), at calving 0), day diagnosis 7 2 after calving). Cows reddish or brownish, watery, fetid discharge were diagnosed 52). paired herdmates without 52) based on days milk. metabolome plasma samples evaluated using untargeted...
The objective was to assess differences in productive and reproductive performance, survival associated with vaginal discharge characteristics fever postpartum dairy cows located western southern states of the United States. This retrospective cohort study included data from 3 experiments conducted 9 dairies. Vaginal evaluated twice within 12 DIM scored on a 5-point scale. highest score observed for each cow used allocate them into 1 5 possible groups (VD group) as follows: VD 2 1/2; n =...
Abstract Objectives were to assess differences in uterine microbiome associated with clinical cure and pregnancy outcomes dairy cows treated for metritis. Cows metritis (reddish-brownish, watery, fetid vaginal discharge) paired without based on parity days postpartum. Uterine contents collected through transcervical lavage at diagnosis, five later following antimicrobial therapy (day 5), 40 was assessed by sequencing the V4 hypervariable region of 16S rRNA gene. Although alpha-diversity...
Ruminants have the ability to digest human-inedible plant materials, due symbiotic relationship with rumen microbiota. Rumen microbes supply short chain fatty acids, amino and vitamins dairy cows that are used for maintenance, growth, lactation functions. The main goal of this study was investigate gene-microbiome networks underlying feed efficiency traits by integrating genotypic, microbial, phenotypic data from lactating cows. Data consisted dry matter intake (DMI), net energy secreted in...
Objectives were to evaluate the effect of 2 analogs PGF2α (cloprostenol vs. dinoprost) and doses (1 injection injections) on luteolysis, follicle diameter, hormonal concentrations, time ovulation in dairy heifers. Holstein heifers fitted with automated estrus detection devices had their estrous cycle synchronized using an intravaginal insert containing progesterone. Heifers detected blocked by weight randomly assigned 1 4 treatments a × factorial arrangement: cloprostenol d 7 after (CLOx1; n...
Abstract Less invasive rumen sampling methods such as oro-esophageal tubing became widely popular to explore the microbiome and metabolome. However, it remains unclear if represent well contents from cannula technique. Herein, we characterized metabolome in content collected by an tube ten multiparous lactating Holstein cows. The 16SrRNA gene was amplified sequenced using IlluminaMiSeq platform. Untargeted gas chromatography of a time-of-flight mass spectrometer. Bacteroidetes , Firmicutes...