John R. Wenz
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View article: Antimicrobial Resistance Genes in Respiratory Bacteria from Weaned Dairy Heifers
Antimicrobial Resistance Genes in Respiratory Bacteria from Weaned Dairy Heifers Open
Bovine respiratory disease (BRD) is the leading cause of mortality and antimicrobial drug (AMD) use in weaned dairy heifers. Limited information is available regarding antimicrobial resistance (AMR) in respiratory bacteria in this populati…
View article: Antimicrobial Susceptibility in Respiratory Pathogens and Farm and Animal Variables in Weaned California Dairy Heifers: Logistic Regression and Bayesian Network Analyses
Antimicrobial Susceptibility in Respiratory Pathogens and Farm and Animal Variables in Weaned California Dairy Heifers: Logistic Regression and Bayesian Network Analyses Open
Weaned dairy heifers are a relatively understudied production group. Bovine respiratory disease (BRD) is the most common cause of antimicrobial drug (AMD) use, morbidity, and mortality in this production group. The study of antimicrobial r…
View article: Perspectives of dairy employees at the beginning of the COVID-19 pandemic: A survey of health risks and educational needs
Perspectives of dairy employees at the beginning of the COVID-19 pandemic: A survey of health risks and educational needs Open
Our objective was to understand dairy employees' perceptions and educational needs at the onset of the COVID-19 pandemic. A bilingual (English and Spanish), anonymous survey targeted at dairy employees was circulated nationwide via univers…
View article: Improving farm-level antimicrobial stewardship benchmarks by reporting antimicrobial use within the context of both the magnitude of disease pressure and the outcome of therapy
Improving farm-level antimicrobial stewardship benchmarks by reporting antimicrobial use within the context of both the magnitude of disease pressure and the outcome of therapy Open
This manuscript explores a method of benchmarking antimicrobial use within the context of farm level therapeutic incidence (a proxy for disease incidence), and the outcome of that therapy. This is reported both within the same farm over ti…
View article: Perspective of dairy producers from California, Idaho, South Dakota, and Washington: Health and business implications of the COVID-19 pandemic during the second wave
Perspective of dairy producers from California, Idaho, South Dakota, and Washington: Health and business implications of the COVID-19 pandemic during the second wave Open
The aim of this study was to document California, Idaho, South Dakota, and Washington dairy producers' perspectives on the health and business implications of COVID-19 during the pandemic second wave. Dairy producers were reached by a 14-q…
View article: In-vitro antibiotic resistance phenotypes of respiratory and enteric bacterial isolates from weaned dairy heifers in California
In-vitro antibiotic resistance phenotypes of respiratory and enteric bacterial isolates from weaned dairy heifers in California Open
Antimicrobial drug (AMD) use for bovine respiratory disease (BRD) continues to be concerning for development of antimicrobial resistance (AMR) in respiratory and enteric bacteria of cattle. This study aimed to provide data regarding AMR in…
View article: Low colostrum yield in Jersey cattle and potential risk factors
Low colostrum yield in Jersey cattle and potential risk factors Open
Consumption of an adequate volume of high-quality colostrum is vital to a dairy calf's ability to survive and become a productive herd member. However, some dairy herds have reported a deficiency of colostrum production, which ranges from …
View article: A survey of risk factors for digit injuries among dogs training and competing in agility events
A survey of risk factors for digit injuries among dogs training and competing in agility events Open
OBJECTIVE To identify potential risk factors for digit injuries in dogs training and competing in agility events. DESIGN Internet-based, retrospective, cross-sectional survey. ANIMALS 1,081 dogs training or competing in agility events. PRO…
View article: Estimation of the cow- and herd-level prevalence of post-partum subclinical ketosis in large Washington state dairy herds and evaluation of mean β-hydroxybutyrate concentration for herd-level assessment
Estimation of the cow- and herd-level prevalence of post-partum subclinical ketosis in large Washington state dairy herds and evaluation of mean β-hydroxybutyrate concentration for herd-level assessment Open
The purpose of this study was to estimate the cow- and herd-level prevalence of subclinical ketosis (SCK) on dairies in the state of Washington and evaluate the arithmetic mean of individual samples as a proxy for pooled-sample testing to …
View article: Presence of back arch in headlocks
Presence of back arch in headlocks Open
Observation of an arched back while standing and walking is 1 criterion for assessing dairy cow lameness. Objectives of these projects were to evaluate back arch and its association with locomotion score (LS) and hoof lesions. On a single …
View article: Effects of Colony Creation Method and Beekeeper Education on Honeybee (Apis mellifera) Mortality
Effects of Colony Creation Method and Beekeeper Education on Honeybee (Apis mellifera) Mortality Open
Responding to current issues requires Extension educators to quickly react and collaborate. The Washington Department of Agriculture requested help developing and conducting outreach programs on dairy cattle drug residue prevention as a re…