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  • President’s Report
  • 59th Annual Meeting (2020)

    President’s Report

    President’s Report

    • Jason Lombard

    General Session 1: Innovation that Works

    Innovation in Prevention, Control and Detection of Mastitis

    • Ynte Schukken ;
    • Christian Scherpenzeel ;
    • Theo Lam

    General Session 2: Dairy Update from Around the World

    Dairy Update from Around the World – United States

    • Jason Lombard

    Dairy Update from Around the World: Switzerland

    • Hans Ulrich Graber

    Udder Health Situation in Canada

    • Herman W. Barkema ;
    • Simon Dufour ;
    • Trevor J. DeVries ;
    • Greg P. Keefe ;
    • Christopher Luby ;
    • Javier Sanchez ;
    • David F. Kelton

    Dairy Update Around the World: Australia

    • Peter D. Mansell

    Dairy Update from Around the World: Achievements and Challenges in Herd Health and Milk Quality of Chilean Dairy Operations for a Healthy and Sustainable Industry

    • Marcos A. Muñoz

    China Dairy Industry and Technical Development Report in 2018

    • Xinrui Tian ;
    • Wenxue Wu

    General Session 3: Mastitis Pathogens Revisited

    Mastitis Pathogens Revisited: Mycoplasma spp.

    • Bart Pardon

    Mastitis Pathogens Revisited: E. coli

    • Anja Sipka

    Mastitis Pathogens Revisited: Staphylococcus aureus

    • Hans Ulrich Graber

    Mastitis Pathogens Revisited: Non-aureus Staphylococci?

    • Jeroen De Buck

    Mastitis Pathogens Revisited: Streptococcus uberis

    • Paolo Moroni ;
    • Carlos Santistaban ;
    • Valeria Alanis ;
    • Valentina Monistero ;
    • Bianca Castiglioni ;
    • Paola Cremonesi

    General Session 4: Motivational Interviewing

    Motivational Interviewing: A Communication Approach to Promote the Uptake of Advice on Mastitis Management

    • Rachel Hayton ;
    • Lynne Johnston ;
    • Kristen Reyher

    General Session 5: Science into Practice

    Controlling Contagious Mastitis

    • Peter Edmondson

    What Can the Data Tell Us?

    • Sofie Piepers ;
    • Sarne De Vliegher

    Controlling Environmental Mastitis

    • Peter Edmondson

    What Can the Milking Time Assessment Tell Us?

    • Ian Ohnstad

    Research and Development Summaries Session

    Associations between Udder Health and Management on Robotic Dairy Farms

    • Igor Van Den Brulle ;
    • Sofie Piepers ;
    • Ben Aernouts ;
    • Ines Adriaens ;
    • Katleen Geerinckx ;
    • Sarne De Vliegher

    A Randomized Trial to Study the Effect of Automatic Cluster Remover Settings on Milking Performance, Teat Condition, and Udder Health

    • Matthias Wieland ;
    • Daryl V. Nydam ;
    • Wolfgang Heuwieser ;
    • Kimberley M. Morrill ;
    • Lindsay Ferlito ;
    • Rick D. Watters ;
    • Paul D. Virkler

    Milking Performance and Teat Condition at High Vacuum Milking with or without Vacuum Reduction during Low Milk Flow and at Different Detachment Levels

    • Martina Feierabend ;
    • Claudia Stauffer ;
    • Rupert M. Bruckmaier

    Impact of Dry-off Management in Robotic Milking Systems on Milking, Milk Yield, and Somatic Cell Count

    • Ariane E. France ;
    • Simon Dufour ;
    • David F. Kelton ;
    • Herman W. Barkema ;
    • Daryna Kurban ;
    • Meagan T.M. King ;
    • Trevor DeVries

    Randomized Controlled Trial Investigating the Effect of Two Selective Dry Cow Therapy Protocols on Antibiotic Use and Udder Health

    • Sam M. Rowe ;
    • Sandra M. Godden ;
    • Daryl V. Nydam ;
    • Patrick Gorden ;
    • Alfonso Lago ;
    • Amy K. Vasquez ;
    • Erin Royster ;
    • Jenny Timmerman ;
    • Mark J. Thomas

    Influence of Bedding Material on Bacterial Distribution and Bulk Tank Milk Quality in Five New York Dairy Farms

    • Amy K. Vasquez ;
    • Steve Eicker ;
    • Paul D. Virkler ;
    • Daryl V. Nydam ;
    • Valeria M. Alanis ;
    • Michael Zurakowski ;
    • Deb Pawloski ;
    • Paula A. Ospina

    Monitoring Udder Health on Routinely Collected Census Data: Evaluating the Effects of Changing Antimicrobial Policy

    • Christian G. Scherpenzeel ;
    • Kristel W. van den Heuvel-van den Broek ;
    • Inge M. Santman-Berends ;
    • Gerdien van Schaik

    Methicillin-resistant Staphylococcus aureus in German Dairy Herds

    • Arne Schnitt ;
    • Tobias Lienen ;
    • Heidi Wichmann-Schauer ;
    • Bernd A. Tenhagen

    An Observational Transversal Study on the Prevalence of Staphylococcal Intramammary Infections After Calving in Primiparous vs. Multiparous Cows Milked Using an Automatic Milking System

    • Daryna Kurban ;
    • Eliane Bolduc ;
    • Jean-Philippe Roy ;
    • Trevor DeVries ;
    • Rachel Gervais ;
    • Pamela Adkins ;
    • John R. Middleton ;
    • Greg Keefe ;
    • Ariane France ;
    • Simon Dufour

    Comparison of Two Techniques for Collecting Milk Samples to Diagnose Intramammary Infection in Dairy Cattle

    • Shannon R. Ankney ;
    • Luis A. Rivero ;
    • Monica C. Witzke ;
    • Allison C. Naclerio ;
    • Pamela R.F. Adkins ;
    • John R. Middleton

    Posters Presented Only at the Technology Transfer Session

    Randomized Controlled Equivalence Trial Evaluating the Efficacy of Two Commercial Internal Teat Sealants in Dairy Cows

    • Sam M. Rowe ;
    • Sandra M. Godden ;
    • Daryl V. Nydam ;
    • Alfonso Lago ;
    • Amy K. Vasquez ;
    • Erin Royster ;
    • Jenny Timmerman

    Evaluating the Effectiveness of a Nutritional Supplement in Enhancing the Effectiveness of Selective Dry Cow Therapy

    • Kody Hash ;
    • Gina M. Pighetti

    Case Report: Quarter Pathogen Distribution, Linear Scores, and Milk Production at Dry-off After Application of a Selective Dry Cow Therapy Algorithm

    • Amy K. Vasquez ;
    • Daryl V. Nydam ;
    • Mark J. Thomas ;
    • Mario López Benavides

    Udder Health during Transition Period in Primiparous and Multiparous Cows in Uruguay

    • Felipe Peña Mosca ;
    • Elena de Torres Tajes

    Evaluation of Milking System Performance with Comparison of Parlor Types and Manufacturer in Japanese Dairy Farms

    • Masafumi Enokidani

    Teat and Liner Interaction Demonstrated by High-speed Video

    • Paul D. Thompson ;
    • Alen Dzidic ;
    • Graeme A. Mein ;
    • John F. Penry ;
    • Scott A. Sanford ;
    • Alexander A. Squitieri ;
    • Douglas J. Reinemann

    Using Milk Diversion in Automatic Milking Systems to Estimate Incidence of Mastitis in the Absence of Treatment Records

    • John Bonestroo ;
    • Ilka Klaas ;
    • Mariska van der Voort ;
    • Nils Fall ;
    • Henk Hogeveen ;
    • Ulf Emanuelson

    Case Report: The Influence of a Multi-sided Concave Liner on Teat End Condition and Milking Performance in a High-intensity Dairy

    • Julie Geldhof ;
    • Nils Älveby ;
    • Lynda McDonald ;
    • Ahmed Sayed

    Teat Spraying Success with Automatic Systems

    • M. López-Benavides ;
    • M. Gentilini ;
    • E. Depreester ;
    • J. Geldhof ;
    • C. Horton ;
    • N. Thulstrup

    Effect of Simulated Quarter and Udder Removal Settings on Strip Milk and Milking Time

    • Pablo Silva Boloña ;
    • Douglas J. Reinemann ;
    • John Upton

    Reducing Bimodality by Optimizing Treatment Time in AMS

    • Heleen ten Have ;
    • Tomáš Fryda ;
    • Jakub Švehla ;
    • Rik Steenbergen ;
    • Anneke Gouw ;
    • Paul Peetz

    Exploring the Limits of Box-style AMS Milking Efficiency

    • Douglas J. Reinemann ;
    • Maddalena Zucali ;
    • Virginia Inzaghi ;
    • Paul D. Thompson ;
    • John F. Penry ;
    • Pablo Silva Boloña ;
    • John Upton

    Evaluation of Teat Cup Disinfection with Hot Water in a Staphylococcus aureus Mastitis Model

    • Annet G.J. Velthuis ;
    • Eric J.E. van der Meulen ;
    • Ynte H. Schukken ;
    • Erik van Engelen ;
    • Theo J.G.M. Lam

    Reduced Labor Costs when Using a Flow-controlled Vacuum in Rotary Milking Parlors

    • Bart H.P. van den Borne ;
    • Carl Oskar Paulrud ;
    • Douglas J. Reinemann ;
    • H. Hogeveen

    Effects of Flow-controlled Vacuum on Milking Speed

    • Douglas J. Reinemann ;
    • Carl Oskar Palrud ;
    • Martin Wiedemann

    Validation of an Escherichia coli Mastitis Model

    • Annet G.J. Velthuis ;
    • Erik van Engelen ;
    • Ynte H. Schukken

    Characterization of Mammary Pathogenic E. coli and S. aureus and their Interaction with Commensal Bacteria in Bovine Udder

    • Dongyun Jung ;
    • Soyoun Park ;
    • Daryna Kurban ;
    • Simon Dufour ;
    • Jennifer Ronholm

    Molecular Characterization of Staphylococcus aureus Strains Isolated from Bovine Subclinical and Clinical Mastitis in Italy

    • Valentina Monistero ;
    • Paola Cremonesi ;
    • Bianca Castiglioni ;
    • Renata Piccinini ;
    • Paolo Moroni

    Interaction between Bovine-Related Non-aureus Staphylococci and Staphylococcus aureus

    • Bruno T. Silva ;
    • Fernando N. Souza ;
    • Anneleen De Visscher ;
    • Sarne De Vliegher

    Why Species Matter? Dramatic Revelations in Mycoplasma Mastitis Management with Molecular Diagnostics

    • Allan M. Britten ;
    • Eric D. Tretter ;
    • Justine E. Britten

    Identification of Enterococcus spp. Isolated from Milk Samples of Clinical Mastitis

    • Felipe F. Guimarães ;
    • Gustavo N. Moraes ;
    • Sâmea F. Joaquim ;
    • Simony T. Guerra ;
    • Felipe M. Dalanezi ;
    • Bruna C. Lopes ;
    • José C.F. Pantoja ;
    • Marcio G. Ribeiro ;
    • Rodrigo T. Hernandes ;
    • Vera L.M. Rall ;
    • Marcos V. Santos ;
    • Hélio Langoni

    Crime Scene Investigation of Bovine Coagulase Negative Staphylococci by Mass Spectrometry

    • Bettina Nonnemann ;
    • Mille A. Rasmussen ;
    • Karina E. Kristensen ;
    • Lærke B. Astrup

    Differentiation of Species of Mycoplasma spp. Isolated from Clinical Cases of Bovine Mastitis and Bulk Tank Milk: Preliminary Results

    • Bruna C. Lopes ;
    • Sâmea F. Joaquim ;
    • Simony T. Guerra ;
    • Felipe F. Guimarães ;
    • Felipe M. Dalanezi ;
    • Marcio G. Ribeiro ;
    • Helio Langoni

    Benefits of Differential Somatic Cell Count as an Indicator of Mastitis.

    • Maya Gussmann ;
    • Carsten Kirkeby ;
    • Michael Farre ;
    • Tariq Halasa

    Evaluating SCC and DSCC as Indicators for Intramammary Infections in Dairy Cattle

    • Carsten Kirkeby ;
    • Michael Farre ;
    • Tariq Halasa

    Assessment of Teat Cleanliness Using an ATP-measuring Swab Method

    • Mario López Benavides ;
    • Elke Depreester ;
    • Yoji Inui ;
    • Kie Yamada

    In Vitro Susceptibility of Different Antibiotics Against Clinical Bovine Mastitis Pathogens in Germany

    • Luis Leon ;
    • Christian Fidelak ;
    • Thomas Breuer ;
    • Hans-Georg Schön

    Effect of Intramammary Infection on Colostrum Antibody Concentrations

    • Kellie M. Enger ;
    • Nicole R. Hardy ;
    • Benjamin D. Enger

    Duration of Subclinical Mastitis Prior to Occurrence of Non-severe Clinical Mastitis – Results of a Preliminary Analysis

    • Quinn K. Kolar ;
    • Sandra M. Godden ;
    • Pamela L. Ruegg

    Molecular Typing and Toxins Characterization of Streptococcus uberis Strains Isolated from Bovine Subclinical Mastitis

    • Valentina Monistero ;
    • Paola Cremonesi ;
    • Bianca Castiglioni ;
    • Stefano Morandi ;
    • Paolo Moroni

    Virulence Factors and Antibiotic Resistance among Escherichia coli Isolates from Danish Dairy Cattle with Clinical Mastitis

    • Desiree C.K. Lassen ;
    • Chaza N. Chehabi ;
    • Michael Farre ;
    • Lærke B. Astrup

    Microbiome and Resistome Characterization of Colostrum from Selectively Treated Dry Cows on a New York Dairy Farm

    • Amy Vasquez ;
    • Daryl Nydam ;
    • Carla Foditsch ;
    • Lorin Warnick ;
    • Paul Morley ;
    • Enrique Doster

    Validating Changes in Expression of Candidate Regulatory Genes for Mastitis Control

    • Hannah Malcomson ;
    • Gina M. Pighetti

    Feed Restriction and Heat Stress Alters the Fecal Microbiome

    • Monica C. Witzke ;
    • Ricardo O. Rodrigues ;
    • Erin M. Shangraw ;
    • Aaron C. Ericsson ;
    • Thomas B. McFadden ;
    • Pamela R.F. Adkins

    Distribution of Antimicrobial Usage for Mastitis Using Two Metrics

    • Juliana Leite de Campos ;
    • Andrew Steinberger ;
    • Ajay Sethi ;
    • Ashley Kates ;
    • Garret Suen ;
    • John Shutske ;
    • Nasia Safdar ;
    • Tony Goldberg ;
    • Pamela L. Ruegg

    Correcting Procedural Drift via Microbiological Bulk Tank Milk Monitoring

    • Natasha S. Maguire

    Lean in Agriculture has a Large Financial Impact and Motivates Employees

    • Vibeke Fladkjaer Nielsen

    Iodine Complexors and Their Effect on Teat Health

    • Bofeng Sima ;
    • Mark Henderson ;
    • Mario Lopez Benavides

    Biofilm Formation on Silicone, Stainless Steel and Polystyrene of Escherichia coli Isolated from Bulk Tank Milk: Preliminary Results

    • Sâmea F. Joaquim ;
    • Simony T. Guerra ;
    • Felipe F. Guimarães ;
    • Felipe M. Dalanezi ;
    • Bruna C. Lopes ;
    • Simone B. Lucheis ;
    • Gustavo N. Moraes ;
    • Marcio G. Ribeiro ;
    • José C.F. Pantoja ;
    • Rodrigo T. Hernandes ;
    • Vera L.M. Rall ;
    • Domingos S. Leite ;
    • Helio Langoni

    Case Report: An Epidemiological Investigation of a Clinical Mastitis Outbreak in a Commercial Jersey Dairy in the Central Valley of California

    • Daniela Bruno

    Risk Factors, Incidence, and Cure Risks of Subclinical Mastitis Around the Dry Period in California Herds

    • Fernanda C. Ferreira ;
    • Bart van den Borne ;
    • Henk Hogeveen

    Assessing Risk Factors for Repeat Clinical Mastitis Events Within One Month in Eight New York Dairy Farms Monitoring

    • Sietske Ruijgh ;
    • Valeria M. Alanis ;
    • Amy K. Vasquez ;
    • Daryl V. Nydam ;
    • Paula A. Ospina

    Teat End Condition Scores in a Spring Calving Herd

    • Mario Lopez Benavides ;
    • Cathy Yanez ;
    • Yvette MacPherson ;
    • Ali Karkaba ;
    • Scott McDougall

    The Relationship between Fly Load and Somatic Cell Count on Organic Dairy Herds

    • Emily K. Luc

    Prevalence of Intramammary Infection among Small Ruminants on St. Kitts and the Appalachia

    • Jerry R. Roberson