President's Report
Jim Dickrell, NMC President, Dairy Today, Monticello, Minnesota

Mastitis: An Economic Consideration
John Fetrow, University of Minnesota, St. Paul, Minnesota

Detecting Mastitis at Cow-side
Eric Hillerton, Institute for Animal Health, Compton, England

Mastitis Culture Programs for Dairy Herds
David Kelton, University of Guelph, Guelph, Ontario

Hand Mastitis Records in Veterinary Practice
David Rhoda, Evansville Veterinary Service, Evansville, Wisconsin

Detecting Herd Mastitis Problems by Computer
Dick Wallace, University of Illinois, Urbana, Illinois

Staphylococcus aureus: Fingerprinting the Culprit
Ruth Zadok, Utrecht University, Utrecht, The Netherlands

Streptococcus uberis: Identifying Virulence Genes
James Leigh, Institute for Animal Health, Compton, England

Staphylococcus aureus: Super Mastitis Pathogen
Larry Fox, Washington State University, Pullman, Washington

A Review of Milking Preparation: The Science
Morten Dam Rasmussen, Danish Institute of Agricultural Science, Tjele, Denmark

Milking Management in Ontario Herds and Relationship to Milk Quality
Ken Leslie, University of Guelph, Guelph, Ontario

A Proper Milking Routine: The Key to Quality Milk
Andy Johnson, Total Herd Management Services, Seymour, Wisconsin

New Tools for Measuring the Effect of Stimulation and Take-Offs on Milk Flows
Steve Eicker, Valley Ag Software, King Ferry, New York

Motivating Dairy Producers for Change
Liz Doornink, Human Resource Services, Baldwin, Wisconsin

Process Control in a Manufacturing Session
Phil Hermsen, Capitol Vial, Inc., Auburn, Alabama

Process Control: Timely Feedback for Quality Milk Production at the Farm
Jeff Reneau, University of Minnesota, St. Paul, Minnesota

POSTERS PRESENTED AT THE 2000 TECHNOLOGY TRANSFER SESSION

Bulk Tank Somatic Cell Counts of Milk in 21 States, 1998.
Stephen L. Ott and Marty A. Smith, Centers for Epidemiology and Animal Health, USDA:APHIS:VS, Fort Collins, Colorado

A Survey of Milking Procedures and Management Practices on Dairy Herds in Pennsylvania.
Carolyn Burns, David Wolfgang, and Bhushan Jayarao, Pennsylvania State University, University Park, Pennsylvania

A Milking Poster You Can Customize: A Tool to Establish an Individual Standard Operating Procedure and to Train New Milkers.
Pierre Levesque, Institute of Agricultural Technology, La Pocatiere, Quebec, Canada

Efficacy of a Mastitis Control System (MCS).
S. Piña1, W. Warren1, B. Bhatt1, R. Rawls2, S. Nickerson3, and G. Siegel1, 1Biomedical Development Corporation, San Antonio, Texas, 2UTHSCSA, San Antonio, Texas and 3LSU Agricultural Center, Homer, Louisiana

The Bacteriological Profile of Dairy Cows at the End of Lactation in Mastitis Problem Herds in the U.S.
Lloyd Reeve-Johnson1 and Stephen C. Nickerson2 , 1Elanco Animal Science Research, Eli Lilly and Company, Greenfield, Indiana, 2Hill Farm Research Station, Louisiana State University Agricultural Center, Homer, Louisiana

Bulk Milk Iodine Concentrations in Ontario Dairy Herds.
D.L. Brander, K.E. Leslie, D.F. Kelton, L. Wagter, J. Melichercik, K. Day, M.A. Godkin1, University of Guelph, Guelph, Ontario, Canada, 1Ontario Ministry of Agriculture, Food and Rural Affairs Ontario, Canada

Preparation of High Range Milk Somatic Cell Count Standards For Calibration of Electronic Instruments.
N. J. Corlett1, M. J. Paape2, T. K. Ledbetter2, M. E. Bowman2 and B. D. Rhoads1, 1Eastern Laboratory Services, Ltd., Bath, Ohio, 2Immunology and Disease Resistance Laboratory, USDA-ARS, Beltsville, Maryland

Regional, Herd Size and Production Differences in Culling For Mastitis.
Warren D. Gilson, James W. Smith, Lane O. Ely and Angelica M. Chapa, University of Georgia, Athens, Georgia

Hyperchlorination of Water for Teat Hygiene.
Acuña,C.N, Cisneros G, Chertcoff, R.E., Izak E., Agro-Veterinary Advisory Group in Milk Quality and Mastitis GAV, La Plata, Buenos Aires, Argentina

Prevalence of Intramammary Infection at Calving in First Lactation Heifers from Ontario Sentinel Herds.
L. Bassel, D. Kelton, A. Godkin1, K. Lissemore, K. Leslie, N. Smart, C. Church, P. Meadows, University of Guelph, Guelph, Ontario, Canada, 1Ontario Ministry of Agriculture, Food and Rural Affairs, Ontario, Canada

Mastitis Control Program for Streptococcus uberis Outbreak.
E. Izak, Servicio de Prevencion y Control de Mastitis, Buenos Aires, Argentina

Bacteriological Bulk Tank Milk Quality From Dairy Farms With High and Low Somatic Cell Counts in the Central Dairy Area of Argentina.
L.F. Calvinho1, V.R. Canavesio1, N.P. Aguirre1, R.A. Almeida2, and S.P. Oliver2, 1Estación Experimental Agropecuaria Rafaela, I.N.T.A. C.C. 22 (2300) Rafaela, Pcia. de Santa Fe, Argentina, 2The University of Tennessee, Knoxville, Tennessee

Epidemiology of Clinical Mastitis in Italy.
Giulia Giovannini, Renata Piccinini and Alfonso Zecconi, University of Milan - Institute for Infectious Diseases, Milan, Italy

Influence of Staphylococcus aureus Strain on Mammary Quarter Milk Production.
John R. Middleton, Larry K. Fox, Washington State University, Pullman, Washington

Milk Quality on Danish Farms with Automatic Milking Systems.
L. Jepsen1 and M. D Rasmussen2, 1Danish Dairy Board, Aarhus, Denmark, 2Danish Institute of Agricultural Sciences, Foulum, Tjele, Denmark

Test of Automatic Milking Systems in Denmark and Self-Monitoring of Milk Quality.
M. D Rasmussen1 and L. Jepsen 2, 1Danish Institute of Agricultural Sciences, Foulum, Tjele, Denmark,2 Danish Dairy Board, Aarhus, Denmark

Effect of Liner Age on Milking Characteristics.
M. A. Davis, D. J. Reinemann and G. A. Mein, University of Wisconsin-Madison, Madison, Wisconsin

Bovine Lactoferrin Affects Growth, Morphology and b-Lactamase Activity of Staphylococcus aureus Isolated from Bovine Mammary Gland.
Moussa S. Diarra, Annie Cloutier, Mathieu Perrée, Denis Petitclerc and Pierre Lacasse, AAFC-Dairy and Swine Research and Development Centre, Lennoxville, Quebec, Canada

Identification of Nitric Oxide Producing Cells in Mastitic Mammary Gland.
Véronique Boulanger1, Louise Bouchard2, Xin Zhao1 and Pierre Lacasse2, 1McGill University, Montreal, Canada, 2AAFC-Dairy and Swine Research and Development Centre, Lennoxville, Canada

Coagulase-Negative Staphylococcus species Promote Their Invasion into Mammary Epithelial Cells by Exploiting Host Cell Mechanisms.
R. A. Almeida and S. P. Oliver, The University of Tennessee, Knoxville, Tennessee

Collagen Enhances Adherence of Streptococcus uberis to Bovine Mammary Epithelial Cells.
R. A. Almeida, D. A. Luther and S. P. Oliver, The University of Tennessee, Knoxville, Tennessee

PCR-Elisa Procedure for Salmonella Serovars A, B, C2 and D.
B. E. Gillespie, B. M. Jayaraoa, A. G. Mathew, F. A. Draughon and S. P. Oliver, The University of Tennessee, Knoxville, Tennessee, aPennsylvania State University, University Park, Pennsylvania

Application of Differential Inflammatory Cell Count (DICC) as a Tool to Monitor Udder Health.
S. Pillai, S. Senh, E. Kunze, K. Shafer-Weaver, L. Sordillo, and B. Jayarao, Pennsylvania State University, University Park, Pennsylvania

Field Trial Evaluation of Extended Pirlimycin Therapy With or Without Vaccination for Staphylococcus aureus Mastitis.
Leo Timms, Mark Kirkpatrick, and Phil Sears, Iowa State University and Michigan State University, Ames, Iowa, and East Lansing, Michigan

Evolution of Somatic Cell Count on Clinical Mastitis Affected Cows Treated With Pyrlimicin.
Miguel Garcia1, Audrey Torres1, Victor Bermudez2 and Humberto Zambrano3, 1Universidad Centroccidental Lisandro Alvarado, Decanato de Cs. Veterinarias, 2Universidad Central de Venezuela, Facultad de Cs. Veterinarias, 3Pharmacia & Upjohn Inc., Barquisimeto, Venezuela

Response to Pyrlimicin Treatment on Clinical Mastitis Cases.
Humberto Zambrano1, Audrey Torres2, Miguel Garcia2 and Victor Bermudez3 , 1 Pharmacia & Upjohn Inc., 2Universidad Centroccidental Lisandro Alvarado, Decanato de Cs. Veterinarias, 3Universidad Central de Venezuela, Facultad de Cs. Veterinarias, Barquisimeto, Venezuela

Prevalence of Pathogens on Clinical Mastitis Affected Cows Treated With Pyrlimicin.
Audrey Torres1, Miguel Garcia1, Victor Bermudez2 and Humberto Zambrano3, 1Universidad Centroccidental Lisandro Alvarado, Decanato de Cs. Veterinarias, 2Universidad Central de Venezuela, Facultad de Cs. Veterinarias, 3Pharmacia & Upjohn Inc., Barquisimeto, Venezuela

Evaluation of the Hy-Mastitis Test to Detect Staphylococcus on Clinical Mastitis Cases.
Audrey Torres1, Victor Bermudez2 , Humberto Zambrano3 and Miguel Garcia1, 1Universidad Centroccidental Lisandro Alvarado, Decanato de Cs. Veterinarias, 2Universidad Central de Venezuela, Facultad de Cs. Veterinarias, 3Pharmacia & Upjohn Inc., Barquisimeto, Venezuela

Determination of Milk Withholding Time of an Intramammary Product for Mastitis Treatment in Lactating Cows.
Acuña, C.N., Chertcoff, R.E, Cisneros, G., Unchalo, D., Agro-Veterinary Advisory Group in Milk Quality and Mastitis (GAV), La Plata, Buenos Aires, Argentina

Dry Cow Treatment Strategies.
Elizabeth A. Berry and J. Eric Hillerton, Institute for Animal Health, Compton, United Kingdom

Antibiotic Susceptibility Patterns for Various Bacterial Intramammary Pathogens Over 15 Years: Results and Analysis of a Database.
L.L. Garrison, Y.H. Schukken and B. Hilton, Quality Milk Promotion Services, Cornell University, Ithaca, New York

Antimicrobial Resistance of Staphylococcus aureus Isolated from Quarters with Clinical Mastitis in Argentina.
Acuña, C.N., Chertcoff, R.E., Cisneros, G., Izak, E., Nimo, J.M., Agro-Veterinary Advisory Group in Milk Quality and Mastitis (GAV), La Plata, Buenos Aires, Argentina

Consequences of Antibiotics Residual Levels in Milk on Clotting Activity and Cheese Yield.
Acuña, C.N., Cisneros, G., Grillo, P., Agro-Veterinary Advisory Group in Milk Quality and Mastitis (GAV), La Plata, Buenos Aires, Argentina

Evaluation of Gentamicin Residue in Milk From Post Partum Cows Submitted to Intramammary Dry Cow Therapy.
L.F. Laranja da Fonseca, M.V. Santos, P.H.M. Rodrigues, C.C. Pereira, D.M. Pinto, M. Knor, E. Andreata, Universidade de São Paulo, Pirassununga, SP, Brazil

Influence of Prepartum Intramammary Infusion of Pirlimycin Hydrochloride or Penicillin-Novobiocin on Mastitis in Heifers During Early Lactation.
S. P. Oliver, S. J. Ivey, B. E. Gillespie, M. J. Lewis, D. L. Johnson, K. C. Lamar, H. Moorehead and H. H. Dowlen, The University of Tennessee, Knoxville, Tennessee

Efficacy of Extended Pirlimycin Therapy for Treatment of Chronic Environmental Streptococcus species Intramammary Infections in Lactating Dairy Cows.
B. E. Gillespie, H. Moorehead, H. H. Dowlen, D. L. Johnson, K. C. Lamar, M. J. Lewis, S. J. Ivey, and S. P. Oliver, The University of Tennessee, Knoxville, Tennessee

Efficacy and Residue Decline for Extended Therapy Regimes with Pirlimycin Hydrochloride for Treatment of Induced Staphylococcus aureus Mastitis.
J.W. Hallberg, R.A. Rzepkowski, R.E. Hornish and S.T. Chester, Pharmacia & Upjohn Animal Health, Kalamazoo Michigan

Natural Inhibition of Bacterial Growth in Milk.
Kirsty E. Kliem and J. Eric Hillerton, Institute for Animal Health, Compton, United Kingdom

Detection of Salmonella species From Environmental Surfaces in a Milking Parlor and on Hair From Lactating Dairy Cows.
Y. Dje, F. A. Draughon, D. A. Golden, W. J. Taylor and S. P. Oliver, The University of Tennessee, Knoxville, Tennessee

Isolation of Salmonella From Air Samples in a Barn Housing Dairy Calves.
Y. Dje, F. A. Draughon, D. A. Golden, W. J. Taylor and S. P. Oliver, The University of Tennessee, Knoxville, Tennessee

Detection of Mycobacterium avium subsp. paratuberculosis Directly From Bulk Tank Milk by IS 900 PCR.
Shreekumar Pillai and Bhushan Jayarao, Pennsylvania State University, University Park, Pennsylvania

Clinical Mastitis Characteristics of Yeast.
Jerry Roberson, Kevin Pelzer, and Francois Elvinger, Virginia Tech, Blacksburg, Virginia

Epidemiolgy of Bovine Mycoplasmal Mastitis In Japan.
M. Eguchi*1, A. Anri, K. Tanaka* and K. Nishimori*,*Hokkaido Research Station, National Institute of Animal Health, Hokkaido, Japan, 1 Present Affiliation: NIAH, Tsukuba, Japan

Experimental Exposure Results of a New Generation of Chlorine Dioxide Teat Dips.
Stephen A. Fried1 and Chris G. Sigurdson2 , 1ABS Global, DeForest, Wisconsin, 2Ecolab, St. Paul, Minnesota

The Relative Importance of Free Iodine in Bactericidal Efficacy with Two Different Iodophors.
Charles Gradle and Alex Dee, Westfalia-Surge Dairy Supplies, Romeoville, Illinois

An Evaluation of the Factors Affecting the Efficacy of a Dry Cow Teat Sealant.
G. H. Lim, K. E. Leslie, J. Morgan, B. Dow, D. Kelton, T. F. Duffield, J. TenHag, University of Guelph, Guelph, Ontario, Canada

Experimental Models for the Evaluation of the Adherence of Dry Cow Teat Sealants.
Tom Hemling1, Mark Henderson1, Ken Leslie2, Gillian Lim2, Leo Timms3, West Agro, Inc, Kansas City, Missouri1, University of Guelph, Guelph, Ontario, Canada2, Iowa State University, Ames, Iowa3

Lesion Stage and Its Effect on the Treatment of Digital Dermatitis.
Thomas Hemling, Harinath Bathina, Joy Lising, West Agro, Inc., Kansas City, Missouri, Joanne Siciliano-Jones, Jordanna Calaman, F.A.R.M.E. Institute, Homer, New York

Efficacy of a New Premilking Teat Disinfectant for the Prevention of Mastitis in Lactating Dairy Cows.
S. P. Oliver, B. E. Gillespie, M. J. Lewis, S. J. Ivey, R. A. Almeida, W. Fang, D. A. Luther, D. L. Johnson, K. C. Lamar, H. Moorehead and H.H. Dowlen, The University of Tennessee, Knoxville, Tennessee

APPENDIX

Summary of Peer-Reviewed Publications on Efficacy of Premilking and Postmilking Teat Disinfectants Published Since 1980 (2000 Update)