F.S. Lima
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View article: A new species of Brachycephalus (Anura: Brachycephalidae) from Serra do Quiriri, northeastern Santa Catarina state, southern Brazil, with a review of the diagnosis among species of the B. pernix group and proposed conservation measures
A new species of Brachycephalus (Anura: Brachycephalidae) from Serra do Quiriri, northeastern Santa Catarina state, southern Brazil, with a review of the diagnosis among species of the B. pernix group and proposed conservation measures Open
Brachycephalus are miniaturized diurnal frogs inhabiting the leaf litter of the Brazilian Atlantic Forest, mainly in montane areas. The genus includes 42 currently recognized species, 35 of which being described since 2000. This study desc…
View article: Differences in reproductive and productive performance and removal from the herd associated with time to clinical cure in dairy cows treated for metritis
Differences in reproductive and productive performance and removal from the herd associated with time to clinical cure in dairy cows treated for metritis Open
The objectives of this study were to assess differences in lactational performance (reproduction, milk production, and removal from the herd) associated with time to clinical cure of metritis. This retrospective cohort study was conducted …
View article: A farm-level comparison of health disorders and reproductive performance in Holstein-Gyr and Holstein dairy cows
A farm-level comparison of health disorders and reproductive performance in Holstein-Gyr and Holstein dairy cows Open
Holstein-Gyr crossbred dairy cows are commonly used in Central and South American countries to combine the perceived benefits of heat and health disorders tolerance of Gyr cows with the milk production of Holstein cows. The objectives of t…
View article: Antibiogram use on dairy cattle for bovine respiratory disease: Multidrug resistance in Pasteurella multocida and Mannheimia haemolytica in California dairies
Antibiogram use on dairy cattle for bovine respiratory disease: Multidrug resistance in Pasteurella multocida and Mannheimia haemolytica in California dairies Open
Multidrug-resistant (MDR) bovine respiratory pathogens can significantly decrease treatment success and have an effect on dairy farm productivity. Although antibiograms have emerged as a tool to support empirical decision making for diseas…
View article: Antibiogram use on dairy cattle for bovine respiratory disease: A repeated cross-sectional study evaluating antimicrobial susceptibility of Pasteurella multocida and Mannheimia haemolytica
Antibiogram use on dairy cattle for bovine respiratory disease: A repeated cross-sectional study evaluating antimicrobial susceptibility of Pasteurella multocida and Mannheimia haemolytica Open
Bovine respiratory disease (BRD) remains a costly challenge to the dairy industry, as the bacterial complex involved in BRD has shown decreased susceptibility to antimicrobials, exacerbating its effects on animal health, productivity, and …
View article: Differences in lactational performance associated with antimicrobial treatment and clinical cure failure of metritis in dairy cows
Differences in lactational performance associated with antimicrobial treatment and clinical cure failure of metritis in dairy cows Open
The objective of this study was to evaluate the differences in milk production, reproductive performance, and culling associated with antimicrobial therapy and clinical cure of metritis in dairy cows. In this study, data from 2 randomized …
View article: Antibiogram use on dairy cattle for bovine respiratory disease: Factors associated with bacterial pathogen identification and prediction of bacterial recovery using machine learning
Antibiogram use on dairy cattle for bovine respiratory disease: Factors associated with bacterial pathogen identification and prediction of bacterial recovery using machine learning Open
Effective isolation of bacterial pathogens for bovine respiratory disease (BRD) is a critical step for accurate diagnosis of the agent associated with this disease on the dairy. Limited information is available on factors associated with h…
View article: Associations of serum fatty acids, serum urea nitrogen, and ruminal ammonia nitrogen with residual feed intake in lactating dairy cows
Associations of serum fatty acids, serum urea nitrogen, and ruminal ammonia nitrogen with residual feed intake in lactating dairy cows Open
Feed efficiency is critical in dairy farming, affecting production costs and environmental sustainability. The development of the trait residual feed intake (RFI) has provided an opportunity to select dairy cows that are more efficient in …
View article: The economic impact of purulent vaginal discharge in dairy herds within a single lactation
The economic impact of purulent vaginal discharge in dairy herds within a single lactation Open
The goal of this study was to calculate the cost of purulent vaginal discharge (PVD) in dairy cows. The dataset included 11,051 cows from 16 dairy herds located in 4 regions of the United States. Purulent vaginal discharge was characterize…
View article: Association of genomic predictions for fertility traits with reproductive outcomes in dairy cows under 2 estrus detection and timed artificial insemination programs
Association of genomic predictions for fertility traits with reproductive outcomes in dairy cows under 2 estrus detection and timed artificial insemination programs Open
Genomic prediction of daughter pregnancy rate (GDPR) and cow conception rate (GCCR) are fertility traits developed to help improve selection for reproductive performance. Although these traits overlap, their denominator can vary, and progr…
View article: Revealing host genome–microbiome networks underlying feed efficiency in dairy cows
Revealing host genome–microbiome networks underlying feed efficiency in dairy cows Open
Ruminants have the ability to digest human-inedible plant materials, due to the symbiotic relationship with the rumen microbiota. Rumen microbes supply short chain fatty acids, amino acids, and vitamins to dairy cows that are used for main…
View article: Investigating relationships between the host genome, rumen microbiome, and dairy cow feed efficiency using mediation analysis with structural equation modeling
Investigating relationships between the host genome, rumen microbiome, and dairy cow feed efficiency using mediation analysis with structural equation modeling Open
The rumen microbiome is crucial for converting feed into absorbable nutrients used for milk synthesis, and the efficiency of this process directly affects the profitability and sustainability of the dairy industry. Recent studies have foun…
View article: Machine Learning to Predict Pregnancy in Dairy Cows: An Approach Integrating Automated Activity Monitoring and On-Farm Data
Machine Learning to Predict Pregnancy in Dairy Cows: An Approach Integrating Automated Activity Monitoring and On-Farm Data Open
Automated activity monitoring (AAM) systems are critical in the dairy industry for detecting estrus and optimizing the timing of artificial insemination (AI), thus enhancing pregnancy success rates in cows. This study developed a predictiv…
View article: WGS of intrauterine <i>E. coli</i> from cows with early postpartum uterine infection reveals a non-uterine specific genotype and virulence factors
WGS of intrauterine <i>E. coli</i> from cows with early postpartum uterine infection reveals a non-uterine specific genotype and virulence factors Open
Escherichia coli has been attributed to playing a major role in a cascade of events that affect the prevalence and severity of uterine disease in cattle. The objectives of this project were to (i) define the association between the prevale…
View article: Effects of treatment with propylene glycol and cyanocobalamin on disease, milk production and reproductive outcomes of dairy cows diagnosed with hyperketonemia and hypoglycemia
Effects of treatment with propylene glycol and cyanocobalamin on disease, milk production and reproductive outcomes of dairy cows diagnosed with hyperketonemia and hypoglycemia Open
Almost all periparturient dairy cows experience a period of negative energy balance, and despite improvements to fresh cow management, some dairy cows still experience clinical disease associated with the periparturient period (Duffield e…
View article: A randomized controlled trial evaluating the efficacy of systemic ceftiofur administration for metritis therapy in dairy cows and the effect of metritis cure on economically important outcomes
A randomized controlled trial evaluating the efficacy of systemic ceftiofur administration for metritis therapy in dairy cows and the effect of metritis cure on economically important outcomes Open
The main objective of this study was to evaluate the effect of ceftiofur on metritis cure, milk yield, reproductive performance, and culling up to 300 DIM. The secondary objective was to evaluate the effect of metritis cure at 5 (early cur…
View article: Rumen-Protected Choline Improves Metabolism and Lactation Performance in Dairy Cows
Rumen-Protected Choline Improves Metabolism and Lactation Performance in Dairy Cows Open
Choline is required for the synthesis of phosphatidylcholine, an important constituent of lipoproteins. Early lactation cows presumably synthesize insufficient phosphatidylcholine, and choline supplementation in a rumen-protected form migh…
View article: Effect of 200 μg of gonadorelin hydrochloride at the first GnRH of a CO-Synch program on ovulation rate and pregnancies per artificial insemination in Holstein heifers
Effect of 200 μg of gonadorelin hydrochloride at the first GnRH of a CO-Synch program on ovulation rate and pregnancies per artificial insemination in Holstein heifers Open
The initial ovulatory response during synchronization programs is often low in dairy heifers, largely due to follicular dynamics and hormonal dynamics. Specifically, the progesterone (P4) concentration at the time of the first GnRH treatme…
View article: Predictive models for metritis cure using farm-collected data, metabolic and inflammation biomarkers, and hemogram variables measured at diagnosis
Predictive models for metritis cure using farm-collected data, metabolic and inflammation biomarkers, and hemogram variables measured at diagnosis Open
Our objective was to evaluate the accuracy of predictive models for metritis spontaneous cure (SC) and cure among ceftiofur-treated cows using farm-collected data only, and with the addition of hemogram variables and circulating concentrat…
View article: An artificial intelligence approach of feature engineering and ensemble methods depicts the rumen microbiome contribution to feed efficiency in dairy cows
An artificial intelligence approach of feature engineering and ensemble methods depicts the rumen microbiome contribution to feed efficiency in dairy cows Open
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 and milk production effic…
View article: Application of behavior data to predictive exploratory models of metritis self-cure and treatment failure in dairy cows
Application of behavior data to predictive exploratory models of metritis self-cure and treatment failure in dairy cows Open
The objective was to evaluate the performance of exploratory models containing routinely available on-farm data, behavior data, and the combination of both to predict metritis self-cure (SC) and treatment failure (TF). Holstein cows (n = 1…
View article: Farmers’ Perceptions on Implementing Automatic Milking Systems in Large USA Dairies: Decision-Making Process, Management Practices, Labor, and Herd Performance
Farmers’ Perceptions on Implementing Automatic Milking Systems in Large USA Dairies: Decision-Making Process, Management Practices, Labor, and Herd Performance Open
Automatic Milking System (AMS) installations are increasing in the USA despite the higher investment cost than conventional systems. Surveys on AMSs conducted outside the USA focused on small–medium herds, specific regions, or aspects of A…
View article: Host and rumen microbiome contributions to feed efficiency traits in Holstein cows
Host and rumen microbiome contributions to feed efficiency traits in Holstein cows Open
It is now widely accepted that dairy cow performance is influenced by both the host genome and rumen microbiome composition. The contributions of the genome and the microbiome to the phenotypes of interest are quantified by heritability (h…
View article: Effect of rumen-protected choline on dairy cow metabolism, immunity, lactation performance, and vaginal discharge microbiome
Effect of rumen-protected choline on dairy cow metabolism, immunity, lactation performance, and vaginal discharge microbiome Open
Rumen-protected choline (RPC) promotes benefits in milk production, immunity, and health in dairy cows by optimizing lipid metabolism during transition period management and early lactation. However, the RPC success in dairy cows depends o…
View article: Changes in Uterine Metabolome Associated with Metritis Development and Cure in Lactating Holstein Cows
Changes in Uterine Metabolome Associated with Metritis Development and Cure in Lactating Holstein Cows Open
The objective of this study was to identify alterations in the vaginal discharge (VD) metabolome and potential biomarkers to predict metritis development and a cure in dairy cows. This prospective cohort study was conducted on two dairies …
View article: Geographical trends for automatic milking systems research in non-pasture-based dairy farms: A scoping review
Geographical trends for automatic milking systems research in non-pasture-based dairy farms: A scoping review Open
Automatic milking system (AMS) adoption in the United States is trending upward, with issues such as lower availability and increased cost of labor being factors frequently listed as motives for AMS implementation. In addition, more intere…
View article: Defining clinical diagnosis and treatment of puerperal metritis in dairy cows: A Scoping Review
Defining clinical diagnosis and treatment of puerperal metritis in dairy cows: A Scoping Review Open
Puerperal metritis (PM) is a common infectious disease in dairy cattle. Currently there are discrepancies between clinical case definitions within and between available peer-reviewed literature and on-farms practices. The inconsistent use …