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Herman Barkema

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Wendela Wapenaar; Herman W Barkema; Ryan M O'Handley
Fecal shedding of Toxocara canis and other parasites in foxes and coyotes on Prince Edward Island, Canada.
Praseeda Ajitkumar; Herman W Barkema; Douglas W Morck; Frank J U M van der Meer; Ruth N Zadoks; Jeroen De Buck
High-resolution melt analysis for species identification of coagulase-negative staphylococci derived from bovine milk.
Lisa Kish; Herman W Barkema; Michael Gänzle; Naomi Hotte; Gilaad G Kaplan; KP Rioux; Aducio L Thiesen; Robert Tso; Renaud Vincent; Eytan Wine; Karen L Madsen
Environmental particulate matter induces murine intestinal inflammatory responses and alters the gut microbiome.

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All Publications

2013: Wendela Wapenaar; Herman W Barkema; Ryan M O'Handley
Fecal shedding of Toxocara canis and other parasites in foxes and coyotes on Prince Edward Island, Canada.
Journal of wildlife diseases 2013;49(2):394-7.
2013: Praseeda Ajitkumar; Herman W Barkema; Douglas W Morck; Frank J U M van der Meer; Ruth N Zadoks; Jeroen De Buck
High-resolution melt analysis for species identification of coagulase-negative staphylococci derived from bovine milk.
Diagnostic microbiology and infectious disease 2013;75(3):227-34.
2013: Lisa Kish; Herman W Barkema; Michael Gänzle; Naomi Hotte; Gilaad G Kaplan; KP Rioux; Aducio L Thiesen; Robert Tso; Renaud Vincent; Eytan Wine; Karen L Madsen
Environmental particulate matter induces murine intestinal inflammatory responses and alters the gut microbiome.
PloS one 2013;8(4):e62220.
2012: R G M Olde Riekerink; B van Santen; I Ohnstad; Herman W Barkema
Effect of an automated dipping and backflushing system on somatic cell counts.
Journal of dairy science 2012;95(9):4931-8.
2012: E Budu-Amoako; B R Dixon; Spencer J Greenwood; L Ang; Herman W Barkema; L Sweet; JT McClure
Molecular epidemiology of cryptosporidium and giardia in humans on prince edward island, Canada: evidence of zoonotic transmission from cattle.
Zoonoses and public health 2012;59(6):424-33.
2012: V Saini; D T Scholl; Greg Keefe; D Léger; J T McClure; D W Morck; Herman W Barkema
Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farms.
Journal of dairy science 2012;95(8):4319-32.
2012: S Dufour; K K Reyher; J-P Roy; Herman W Barkema; Luc DesCôteaux; T J Devries; I R Dohoo; Daniel Scholl
Epidemiology of coagulase-negative staphylococci intramammary infection in dairy cattle and the effect of bacteriological culture misclassification.
Journal of dairy science 2012;95(6):3110-24.
2012: I Ohnstad; R G M Olde Riekerink; C A J M de Koning; P Hogewerf; Herman W Barkema
Short communication: Effect of automatic postmilking teat disinfection and cluster flushing on the milking work routine.
Journal of dairy science 2012;95(5):2567-70.
2012: E Budu-Amoako; B R Dixon; Spencer J Greenwood; Herman W Barkema; JT McClure
Giardia and Cryptosporidium on dairy farms and the role these farms may play in contaminating water sources in Prince Edward Island, Canada.
Journal of veterinary internal medicine / American College of Veterinary Internal Medicine 2012;26(3):668-73.
2012: V Saini; D T Scholl; T J DeVries; J T McClure; Herman W Barkema
Herd-level association between antimicrobial use and antimicrobial resistance in bovine mastitis Staphylococcus aureus isolates on Canadian dairy farms.
Journal of dairy science 2012;95(4):1921-9.
2012: Praseeda Ajitkumar; Herman W Barkema; Jeroen De Buck
Rapid identification of bovine mastitis pathogens by high-resolution melt analysis of 16S rDNA sequences.
Veterinary microbiology 2012;155(2-4):332-40.
2012: S Dufour; K K Reyher; J-P Roy; Herman W Barkema; Luc DesCôteaux; T J Devries; I R Dohoo; Daniel Scholl
Manageable risk factors associated with the lactational incidence, elimination, and prevalence of Staphylococcus aureus intramammary infections in dairy cows.
Journal of dairy science 2012;95(3):1283-300.
2012: V Saini; D T Scholl; A G Sheldon; S Dufour; D Léger; J T McClure; Herman W Barkema
Antimicrobial use on Canadian dairy farms.
Journal of dairy science 2012;95(3):1209-21.
2012: Sarne De Vliegher; L K Fox; S McDougall; S Piepers; Herman W Barkema
Invited review: Mastitis in dairy heifers: nature of the disease, potential impact, prevention, and control.
Journal of dairy science 2012;95(3):1025-40.
2012: Alejandro Ceballos-Márquez; Ian R Dohoo; Greg Keefe; Henrik Stryhn; Herman W Barkema; Jeffrey J Wichtel
Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herds.
The Canadian veterinary journal. La revue vétérinaire canadienne 2012;53(1):51-6.
2012: Ing Shian Soon; Herman W Barkema; William A Ghali; Natalie A Molodecky; Doreen M Rabi; Gilaad G Kaplan
The relationship between urban environment and the inflammatory bowel diseases: a systematic review and meta-analysis.
BMC gastroenterology 2012;12():51.
2011: Ebo Budu-Amoako; Brent R Dixon; Spencer J Greenwood; Herman W Barkema; JT McClure
Foodborne illness associated with Cryptosporidium and Giardia from livestock.
Journal of food protection 2011;74(11):1944-55.
2011: Ajitkumar G Menon; Herman W Barkema; John P Kastelic; Randy Wilde; Jacob Thundathil
Associations between sperm abnormalities, breed, age, and scrotal circumference in beef bulls.
Canadian journal of veterinary research = Revue canadienne de recherche vétérinaire 2011;75(4):241-7.
2011: Fabienne D Uehlinger; Hester Zwiers; Tatjana Coklin; Melvin de Boer; Brent R Dixon; Spencer J Greenwood; JT McClure; Ryan M O'Handley; Herman W Barkema
Prevalence and genotypes of Giardia duodenalis in dairy and beef cattle in farms around Charlottetown, Prince Edward Island, Canada.
The Canadian veterinary journal. La revue vétérinaire canadienne 2011;52(9):967-72.
2011: Natalie A Molodecky; Remo Panaccione; Herman W Barkema; Subrata Ghosh; Gilaad G Kaplan
Challenges associated with identifying the environmental determinants of the inflammatory bowel diseases.
Inflammatory bowel diseases 2011;17(8):1792-9.
2011: Natalie A Molodecky; Robert P Myers; Herman W Barkema; Hude Quan; Gilaad G Kaplan
Validity of administrative data for the diagnosis of primary sclerosing cholangitis: a population-based study.
Liver international : official journal of the International Association for the Study of the Liver 2011;31(5):712-20.
2011: S Piepers; K Peeters; Geert Opsomer; Herman W Barkema; K Frankena; Sarne De Vliegher
Pathogen group specific risk factors at herd, heifer and quarter levels for intramammary infections in early lactating dairy heifers.
Preventive veterinary medicine 2011;99(2-4):91-101.
2011: Natalie A Molodecky; Hashim Kareemi; Rohan Parab; Herman W Barkema; Hude Quan; Robert P Myers; Gilaad G Kaplan
Incidence of primary sclerosing cholangitis: a systematic review and meta-analysis.
Hepatology (Baltimore, Md.) 2011;53(5):1590-9.
2011: Ajitkumar G Menon; Jacob C Thundathil; Randy Wilde; John P Kastelic; Herman W Barkema
Validating the assessment of bull sperm morphology by veterinary practitioners.
The Canadian veterinary journal. La revue vétérinaire canadienne 2011;52(4):407-8.
2011: V Saini; R G M Olde Riekerink; J T McClure; Herman W Barkema
Diagnostic accuracy assessment of Sensititre and agar disk diffusion for determining antimicrobial resistance profiles of bovine clinical mastitis pathogens.
Journal of clinical microbiology 2011;49(4):1568-77.
2011: K K Reyher; S Dufour; Herman W Barkema; L Des Côteaux; T J Devries; I R Dohoo; Greg Keefe; J-P Roy; Daniel Scholl
The National Cohort of Dairy Farms--a data collection platform for mastitis research in Canada.
Journal of dairy science 2011;94(3):1616-26.
2011: JJ Lievaart; J K Reneau; W D J Kremer; Herman W Barkema
Short communication: influence of sampling interval on the accuracy of predicting bulk milk somatic cell count.
Journal of dairy science 2011;94(2):804-7.
2011: W Steeneveld; Tine van Werven; Herman W Barkema; H Hogeveen
Cow-specific treatment of clinical mastitis: an economic approach.
Journal of dairy science 2011;94(1):174-88.
2010: A Ceballos-Marquez; Herman W Barkema; Henrik Stryhn; I R Dohoo; G P Keefe; Jeffrey J Wichtel
Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herds.
Journal of dairy science 2010;93(10):4700-9.
2010: A Ceballos-Marquez; Herman W Barkema; Henrik Stryhn; Jeffrey J Wichtel; J Neumann; Armin Mella; Juan Kruze; M S Espindola; FG Wittwer
The effect of selenium supplementation before calving on early-lactation udder health in pastured dairy heifers.
Journal of dairy science 2010;93(10):4602-12.
2010: R G M Olde Riekerink; Herman W Barkema; Daniel Scholl; Doris Poole; Dave F Kelton
Management practices associated with the bulk-milk prevalence of Staphylococcus aureus in Canadian dairy farms.
Preventive veterinary medicine 2010;97(1):20-8.
2010: Otlis Sampimon; Bart Hp van den Borne; Inge Santman-Berends; Herman W Barkema; Theo Lam
Effect of coagulase-negative staphylococci on somatic cell count in Dutch dairy herds.
The Journal of dairy research 2010;77(3):318-24.
2010: Simon Dufour; Herman W Barkema; Luc DesCôteaux; Trevor J DeVries; Ian R Dohoo; Kristen Reyher; Jean-Philippe Roy; Daniel T Scholl
Development and validation of a bilingual questionnaire for measuring udder health related management practices on dairy farms.
Preventive veterinary medicine 2010;95(1-2):74-85.
2010: Frank J U M van der Meer; Karin Orsel; Herman W Barkema
The new influenza A H1N1 virus: balancing on the interface of humans and animals.
The Canadian veterinary journal. La revue vétérinaire canadienne 2010;51(1):56-62.
2010: JJ Lievaart; Herman W Barkema; Jan van den Broek; J A P Heesterbeek; W D J Kremer
Prediction of the herd somatic cell count of the following month using a linear mixed effect model.
Journal of dairy science 2010;93(1):234-41.
2009: Jan Lievaart; Herman W Barkema; H Hogeveen; W D J Kremer
Reliability of the bulk milk somatic cell count as an indication of average herd somatic cell count.
The Journal of dairy research 2009;76(4):490-6.
2009: S Piepers; Geert Opsomer; Evelyne Meyer; K Demeyere; Herman W Barkema; Aart de Kruif; Sarne De Vliegher
Heifer and quarter characteristics associated with periparturient blood and milk neutrophil apoptosis in healthy heifers and in heifers with subclinical mastitis.
Journal of dairy science 2009;92(9):4330-9.
2009: W Steeneveld; Linda C van der Gaag; Herman W Barkema; H Hogeveen
Providing probability distributions for the causal pathogen of clinical mastitis using naive Bayesian networks.
Journal of dairy science 2009;92(6):2598-609.
2009: Otlis Sampimon; Herman W Barkema; Inge Berends; Jan Sol; Theo Lam
Prevalence of intramammary infection in Dutch dairy herds.
The Journal of dairy research 2009;76(2):129-36.
2009: Tatjana Coklin; Fabienne D Uehlinger; Jeffrey M Farber; Herman W Barkema; Ryan M O'Handley; Brent R Dixon
Prevalence and molecular characterization of Cryptosporidium spp. in dairy calves from 11 farms in Prince Edward Island, Canada.
Veterinary parasitology 2009;160(3-4):323-6.
2009: Sarne De Vliegher; Ruth N Zadoks; Herman W Barkema
Heifer and CNS mastitis.
Veterinary microbiology 2009;134(1-2):1-2.
2009: S Piepers; Sarne De Vliegher; Aart de Kruif; Geert Opsomer; Herman W Barkema
Impact of intramammary infections in dairy heifers on future udder health, milk production, and culling.
Veterinary microbiology 2009;134(1-2):113-20.
2009: Alejandro Ceballos; J Sánchez; Henrik Stryhn; J B Montgomery; Herman W Barkema; Jeffrey J Wichtel
Meta-analysis of the effect of oral selenium supplementation on milk selenium concentration in cattle.
Journal of dairy science 2009;92(1):324-42.
2008: W Steeneveld; Henk Hogeveen; Herman W Barkema; Jan van den Broek; R B M Huirne
The influence of cow factors on the incidence of clinical mastitis in dairy cows.
Journal of dairy science 2008;91(4):1391-402.
2008: R G M Olde Riekerink; Herman W Barkema; D F Kelton; Daniel Scholl
Incidence rate of clinical mastitis on Canadian dairy farms.
Journal of dairy science 2008;91(4):1366-77.
2008: Fabienne D Uehlinger; Herman W Barkema; Ryan M O'Handley; Monique Parenteau; Lorna J Parrington; John A Vanleeuwen; Brent Dixon
Comparison of flow cytometry and immunofluorescence microscopy for the detection of Giardia duodenalis in bovine fecal samples.
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 2008;20(2):178-85.
2008: Amanda L Salb; Herman W Barkema; Brett T Elkin; R C Andrew Thompson; Douglas Whiteside; Sandra R Black; J P Dubey; Susan J Kutz
Dogs as sources and sentinels of parasites in humans and wildlife, northern Canada.
Emerging infectious diseases 2008;14(1):60-3.
2007: Wendela Wapenaar; Herman W Barkema; Maarten Eysker; Ryan M O'Handley
An outbreak of dictyocaulosis in lactating cows on a dairy farm.
Journal of the American Veterinary Medical Association 2007;231(11):1715-8.
2007: Caroline J Hewson; Ian R Dohoo; Kip A Lemke; Herman W Barkema
Factors affecting Canadian veterinarians' use of analgesics when dehorning beef and dairy calves.
The Canadian veterinary journal. La revue vétérinaire canadienne 2007;48(11):1129-36.
2007: Sofie Piepers; Luc De Meulemeester; Aart de Kruif; Geert Opsomer; Herman W Barkema; Sarne De Vliegher
Prevalence and distribution of mastitis pathogens in subclinically infected dairy cows in Flanders, Belgium.
The Journal of dairy research 2007;74(4):478-83.
2007: JJ Lievaart; W D J Kremer; Herman W Barkema
Short communication: Comparison of bulk milk, yield-corrected, and average somatic cell counts as parameters to summarize the subclinical mastitis situation in a dairy herd.
Journal of dairy science 2007;90(9):4145-8.
2007: JJ Lievaart; Herman W Barkema; W D J Kremer; Jan van den Broek; J H M Verheijden; J A P Heesterbeek
Effect of herd characteristics, management practices, and season on different categories of the herd somatic cell count.
Journal of dairy science 2007;90(9):4137-44.
2007: R G M Olde Riekerink; Herman W Barkema; W Veenstra; F E Berg; Henrik Stryhn; Ruth N Zadoks
Somatic cell count during and between milkings.
Journal of dairy science 2007;90(8):3733-41.
2007: Fabienne D Uehlinger; Ryan M O'Handley; Spencer J Greenwood; Nicole J Guselle; Leslie J Gabor; Cecilia M Van Velsen; Robert F L Steuart; Herman W Barkema
Efficacy of vaccination in preventing giardiasis in calves.
Veterinary parasitology 2007;146(1-2):182-8.
2007: Wendela Wapenaar; Herman W Barkema; Ryan M O'Handley; C J M Bartels
Use of an enzyme-linked immunosorbent assay in bulk milk to estimate the prevalence of Neospora caninum on dairy farms in Prince Edward Island, Canada.
The Canadian veterinary journal. La revue vétérinaire canadienne 2007;48(5):493-9.
2007: Wendela Wapenaar; Herman W Barkema; Gereon Schares; K Rouvinen-Watt; L Zeijlemaker; B Poorter; Ryan M O'Handley; O C H Kwok; Jitender P Dubey
Evaluation of four serological techniques to determine the seroprevalence of Neospora caninum in foxes (Vulpes vulpes) and coyotes (Canis latrans) on Prince Edward Island, Canada.
Veterinary parasitology 2007;145(1-2):51-8.
2007: R G M Olde Riekerink; Herman W Barkema; Henrik Stryhn
The effect of season on somatic cell count and the incidence of clinical mastitis.
Journal of dairy science 2007;90(4):1704-15.
2007: Caroline J Hewson; Ian R Dohoo; Kip A Lemke; Herman W Barkema
Canadian veterinarians' use of analgesics in cattle, pigs, and horses in 2004 and 2005.
The Canadian veterinary journal. La revue vétérinaire canadienne 2007;48(2):155-64.
2007: Wendela Wapenaar; Herman W Barkema; John A Vanleeuwen; JT McClure; Ryan M O'Handley; O C H Kwok; P Thulliez; Jitender P Dubey; Mark C Jenkins
Comparison of serological methods for the diagnosis of Neospora caninum infection in cattle.
Veterinary parasitology 2007;143(2):166-73.
2006: Fabienne D Uehlinger; Herman W Barkema; Brent Dixon; Tatjana Coklin; Ryan M O'Handley
Giardia duodenalis and Cryptosporidium spp. in a veterinary college bovine teaching herd.
Veterinary parasitology 2006;142(3-4):231-7.
2006: Wendela Wapenaar; Mark C Jenkins; Ryan M O'Handley; Herman W Barkema
Neospora caninum-like oocysts observed in feces of free-ranging red foxes (Vulpes vulpes) and coyotes (Canis latrans).
The Journal of parasitology 2006;92(6):1270-4.
2006: Carolyn J Sanford; Greg Keefe; Javier Sanchez; Randy T Dingwell; Herman W Barkema; Ken E Leslie; Ian R Dohoo
Test characteristics from latent-class models of the California Mastitis Test.
Preventive veterinary medicine 2006;77(1-2):96-108.
2006: Shawn L B McKenna; Greg Keefe; Ashwani Tiwari; John A Vanleeuwen; Herman W Barkema
Johne's disease in Canada part II: disease impacts, risk factors, and control programs for dairy producers.
The Canadian veterinary journal. La revue vétérinaire canadienne 2006;47(11):1089-99.
2006: Ashwani Tiwari; John A Vanleeuwen; Shawn L B McKenna; Greg Keefe; Herman W Barkema
Johne's disease in Canada Part I: clinical symptoms, pathophysiology, diagnosis, and prevalence in dairy herds.
The Canadian veterinary journal. La revue vétérinaire canadienne 2006;47(9):874-82.
2006: R G M Olde Riekerink; Herman W Barkema; Stefan Veenstra; Doris Poole; Randy T Dingwell; Greg Keefe
Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island.
The Canadian veterinary journal. La revue vétérinaire canadienne 2006;47(6):567-72.
2006: Shawn L B McKenna; John A Vanleeuwen; Herman W Barkema; Jocelyn T Jansen; Gerald Hauer; Steve H Hendrick; Geneviève Côte; Elliot B Salsberg; R Edward Empringham
Proposed Canadian Voluntary National Johne's Disease Prevention and Control Program.
The Canadian veterinary journal. La revue vétérinaire canadienne 2006;47(6):539-41.
2006: Herman W Barkema; Ynte Schukken; Ruth N Zadoks
Invited Review: The role of cow, pathogen, and treatment regimen in the therapeutic success of bovine Staphylococcus aureus mastitis.
Journal of dairy science 2006;89(6):1877-95.
2006: Shawn L B McKenna; Herman W Barkema; Greg Keefe; DC Sockett
Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattle.
Veterinary microbiology 2006;114(3-4):285-91.
2006: Carolyn J Sanford; Greg Keefe; Ian R Dohoo; Ken E Leslie; Randy T Dingwell; Luc DesCôteaux; Herman W Barkema
Efficacy of using an internal teat sealer to prevent new intramammary infections in nonlactating dairy cattle.
Journal of the American Veterinary Medical Association 2006;228(10):1565-73.
2005: Marta Gonzalez; Herman W Barkema; Greg Keefe
Monensin toxicosis in a dairy herd.
The Canadian veterinary journal. La revue vétérinaire canadienne 2005;46(10):910-2.
2005: Shawn L B McKenna; Greg Keefe; Herman W Barkema; DC Sockett
Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standards.
Veterinary microbiology 2005;110(1-2):105-11.
2005: Shawn L B McKenna; DC Sockett; Greg Keefe; J McClure; John A Vanleeuwen; Herman W Barkema
Comparison of two enzyme-linked immunosorbent assays for diagnosis of Mycobacterium avium subsp. paratuberculosis.
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 2005;17(5):463-6.
2005: R G M Olde Riekerink; A Dominici; Herman W Barkema; A J de Smit
Seroprevalence of pestivirus in four species of alpine wild ungulates in the High Valley of Susa, Italy.
Veterinary microbiology 2005;108(3-4):297-303.
2005: Sarne De Vliegher; Herman W Barkema; Henrik Stryhn; Geert Opsomer; Aart de Kruif
Impact of early lactation somatic cell count in heifers on milk yield over the first lactation.
Journal of dairy science 2005;88(3):938-47.
2005: Sarne De Vliegher; Herman W Barkema; Geert Opsomer; Aart de Kruif; Luc Duchateau
Association between somatic cell count in early lactation and culling of dairy heifers using cox frailty models.
Journal of dairy science 2005;88(2):560-8.
2004: Shawn L B McKenna; Greg Keefe; Herman W Barkema; J McClure; John A Vanleeuwen; P Hanna; DC Sockett
Cow-level prevalence of paratuberculosis in culled dairy cows in Atlantic Canada and Maine.
Journal of dairy science 2004;87(11):3770-7.
2004: Sarne De Vliegher; Herman W Barkema; Henrik Stryhn; Geert Opsomer; Aart de Kruif
Impact of early lactation somatic cell count in heifers on somatic cell counts over the first lactation.
Journal of dairy science 2004;87(11):3672-82.
2004: C H J Kalis; MT Collins; Herman W Barkema; JW Hesselink
Certification of herds as free of Mycobacterium paratuberculosis infection: actual pooled faecal results versus certification model predictions.
Preventive veterinary medicine 2004;65(3-4):189-204.
2004: Sarne De Vliegher; Geert Opsomer; A Vanrolleghem; L A Devriese; Otlis Sampimon; Jan Sol; Herman W Barkema; Freddy Haesebrouck; Aart de Kruif
In vitro growth inhibition of major mastitis pathogens by Staphylococcus chromogenes originating from teat apices of dairy heifers.
Veterinary microbiology 2004;101(3):215-21.
2004: Sarne De Vliegher; Hans Laevens; Herman W Barkema; Ian R Dohoo; Henrik Stryhn; Geert Opsomer; Aart de Kruif
Management practices and heifer characteristics associated with early lactation somatic cell count of Belgian dairy heifers.
Journal of dairy science 2004;87(4):937-47.
2003: C H J Kalis; MT Collins; JW Hesselink; Herman W Barkema
Specificity of two tests for the early diagnosis of bovine paratuberculosis based on cell-mediated immunity: the Johnin skin test and the gamma interferon assay.
Veterinary microbiology 2003;97(1-2):73-86.
2003: Sarne De Vliegher; Hans Laevens; Herman W Barkema; Geert Opsomer; T Hemling; Aart de Kruif
Short-term effect of transition from conventional to automated milking on teat skin and teat end condition.
Journal of dairy science 2003;86(5):1646-52.
2003: Sarne De Vliegher; Hans Laevens; L A Devriese; Geert Opsomer; J L M Leroy; Herman W Barkema; Aart de Kruif
Prepartum teat apex colonization with Staphylococcus chromogenes in dairy heifers is associated with low somatic cell count in early lactation.
Veterinary microbiology 2003;92(3):245-52.
2003: Ruth N Zadoks; Barbara E Gillespie; Herman W Barkema; Otlis Sampimon; Stephen P Oliver; Ynte Schukken
Clinical, epidemiological and molecular characteristics of Streptococcus uberis infections in dairy herds.
Epidemiology and infection 2003;130(2):335-49.
2003: Shawn L B McKenna; Herman W Barkema; JT McClure; Laura A Rogers
Tetralogy of Fallot in a 2-year-old Holstein heifer.
The Canadian veterinary journal. La revue vétérinaire canadienne 2003;44(4):312-3.
2003: Thomas Dijkstra; Herman W Barkema; M Eysker; Marten L Beiboer; Willem Wouda
Evaluation of a single serological screening of dairy herds for Neospora caninum antibodies.
Veterinary parasitology 2003;110(3-4):161-9.
2002: Thomas Dijkstra; Herman W Barkema; Camilla Björkman; Willem Wouda
A high rate of seroconversion for Neospora caninum in a dairy herd without an obvious increased incidence of abortions.
Veterinary parasitology 2002;109(3-4):203-11.
2002: Ruth N Zadoks; Willem B van Leeuwen; Deborah Kreft; Lawrence K Fox; Herman W Barkema; Ynte Schukken; Alex Van Belkum
Comparison of Staphylococcus aureus isolates from bovine and human skin, milking equipment, and bovine milk by phage typing, pulsed-field gel electrophoresis, and binary typing.
Journal of clinical microbiology 2002;40(11):3894-902.
2002: Ruth N Zadoks; HG Allore; TJ Hagenaars; Herman W Barkema; Ynte Schukken
A mathematical model of Staphylococcus aureus control in dairy herds.
Epidemiology and infection 2002;129(2):397-416.
2002: G van Schaik; Ynte Schukken; Mirjam Nielen; AA Dijkhuizen; Herman W Barkema; G Benedictus
Probability of and risk factors for introduction of infectious diseases into Dutch SPF dairy farms: a cohort study.
Preventive veterinary medicine 2002;54(3):279-89.
2002: J Veling; H Wilpshaar; Klaas Frankena; C Bartels; Herman W Barkema
Risk factors for clinical Salmonella enterica subsp. enterica serovar Typhimurium infection on Dutch dairy farms.
Preventive veterinary medicine 2002;54(2):157-68.
2002: C H J Kalis; Herman W Barkema; JW Hesselink; C van Maanen; MT Collins
Evaluation of two absorbed enzyme-linked immunosorbent assays and a complement fixation test as replacements for fecal culture in the detection of cows shedding Mycobacterium avium subspecies paratuberculosis.
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 2002;14(3):219-24.
2002: Thomas Dijkstra; Herman W Barkema; M Eysker; J W Hesselink; Willem Wouda
Natural transmission routes of Neospora caninum between farm dogs and cattle.
Veterinary parasitology 2002;105(2):99-104.
2002: Thomas Dijkstra; Herman W Barkema; J W Hesselink; Willem Wouda
Point source exposure of cattle to Neospora caninum consistent with periods of common housing and feeding and related to the introduction of a dog.
Veterinary parasitology 2002;105(2):89-98.
2002: GJ Wellenberg; C J M Bruschke; Henk J Wisselink; Herman W Barkema; JT van Oirschot
Simultaneous intramammary and intranasal inoculation of lactating cows with bovine herpesvirus 4 induce subclinical mastitis.
Veterinary microbiology 2002;86(1-2):115-29.
2002: Jan Sol; Otlis Sampimon; E Hartman; Herman W Barkema
Effect of preculture freezing and incubation on bacteriological isolation from subclinical mastitis samples.
Veterinary microbiology 2002;85(3):241-9.
2002: J Veling; Herman W Barkema; J van der Schans; Fred G van Zijderveld; j verhoeff
Herd-level diagnosis for Salmonella enterica subsp. enterica serovar Dublin infection in bovine dairy herds.
Preventive veterinary medicine 2002;53(1-2):31-42.
2001: Ruth N Zadoks; HG Allore; Herman W Barkema; Otlis Sampimon; GJ Wellenberg; Yrjö T Gröhn; Y H Schukkent
Cow- and quarter-level risk factors for Streptococcus uberis and Staphylococcus aureus mastitis.
Journal of dairy science 2001;84(12):2649-63.
2001: J Veling; Fred G van Zijderveld; AM van Zijderveld-van Bemmel; Ynte Schukken; Herman W Barkema
Evaluation of two enzyme-linked immunosorbent assays for detecting Salmonella enterica subsp. enterica Serovar Dublin antibodies in bulk milk.
Clinical and diagnostic laboratory immunology 2001;8(6):1049-55.
2001: Thomas Dijkstra; M Eysker; Gereon Schares; Franz J Conraths; Willem Wouda; Herman W Barkema
Dogs shed Neospora caninum oocysts after ingestion of naturally infected bovine placenta but not after ingestion of colostrum spiked with Neospora caninum tachyzoites.
International journal for parasitology 2001;31(8):747-52.
2001: C J M Bartels; Herman W Barkema; Marten L Beiboer; A Bouma; J A Stegeman
[Management and herd performance of dairy herds with and without chronic wasting disease].
Tijdschrift voor diergeneeskunde 2001;126(6):198-207.
2001: C J M Bartels; Herman W Barkema; Marten L Beiboer; A Bouma; J A Stegeman
[Comparison of performance of dairy herds that were or were not vaccinated with a bovine herpes virus 1 marker vaccine in 1998].
Tijdschrift voor diergeneeskunde 2001;126(6):191-7.
2001: Herman W Barkema; C J M Bartels; LA van Wuijckhuise; J W Hesselink; M Holzhauer; Maarten F. Weber; P Franken; PA Kock; C J M Bruschke; G M Zimmer
[Outbreak of bovine virus diarrhea on Dutch dairy farms induced by a bovine herpesvirus 1 marker vaccine contaminated with bovine virus diarrhea virus type 2].
Tijdschrift voor diergeneeskunde 2001;126(6):158-65.
2001: Ruth N Zadoks; HG Allore; Herman W Barkema; Otlis Sampimon; Yrjö T Gröhn; Ynte Schukken
Analysis of an outbreak of Streptococcus uberis mastitis.
Journal of dairy science 2001;84(3):590-9.
2001: Thomas Dijkstra; Herman W Barkema; M Eysker; Willem Wouda
Evidence of post-natal transmission of Neospora caninum in Dutch dairy herds.
International journal for parasitology 2001;31(2):209-15.
2001: C H J Kalis; JW Hesselink; Herman W Barkema; MT Collins
Use of long-term vaccination with a killed vaccine to prevent fecal shedding of Mycobacterium avium subsp paratuberculosis in dairy herds.
American journal of veterinary research 2001;62(2):270-4.
2000: J Veling; Fred G van Zijderveld; AM van Zijderveld-van Bemmel; Herman W Barkema; Ynte Schukken
Evaluation of three newly developed enzyme-linked immunosorbent assays and two agglutination tests for detecting Salmonella enterica subsp. enterica serovar dublin infections in dairy cattle.
Journal of clinical microbiology 2000;38(12):4402-7.
2000: C H J Kalis; JW Hesselink; Herman W Barkema; MT Collins
Culture of strategically pooled bovine fecal samples as a method to screen herds for paratuberculosis.
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 2000;12(6):547-51.
2000: Ruth N Zadoks; Willem B van Leeuwen; Herman W Barkema; Otlis Sampimon; Henri A Verbrugh; Ynte Schukken; Alex Van Belkum
Application of pulsed-field gel electrophoresis and binary typing as tools in veterinary clinical microbiology and molecular epidemiologic analysis of bovine and human Staphylococcus aureus isolates.
Journal of clinical microbiology 2000;38(5):1931-9.
2000: Jan Sol; Otlis Sampimon; Herman W Barkema; Ynte Schukken
Factors associated with cure after therapy of clinical mastitis caused by Staphylococcus aureus.
Journal of dairy science 2000;83(2):278-84.
1999: Herman W Barkema; J D Van der Ploeg; Ynte Schukken; T J G M Lam; G Benedictus; A Brand
Management style and its association with bulk milk somatic cell count and incidence rate of clinical mastitis.
Journal of dairy science 1999;82(8):1655-63.
1999: Herman W Barkema; Ynte Schukken; T J G M Lam; Marten L Beiboer; G Benedictus; A Brand
Management practices associated with the incidence rate of clinical mastitis.
Journal of dairy science 1999;82(8):1643-54.
1999: C H J Kalis; JW Hesselink; E W Russchen; Herman W Barkema; MT Collins; I J Visser
Factors influencing the isolation of Mycobacterium avium subsp. paratuberculosis from bovine fecal samples.
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 1999;11(4):345-51.
1999: Herman W Barkema; H A Deluyker; Ynte Schukken; T J G M Lam
Quarter-milk somatic cell count at calving and at the first six milkings after calving.
Preventive veterinary medicine 1999;38(1):1-9.
1999: D Döpfer; Herman W Barkema; T J G M Lam; Ynte Schukken; Wim Gaastra
Recurrent clinical mastitis caused by Escherichia coli in dairy cows.
Journal of dairy science 1999;82(1):80-5.
1998: Herman W Barkema; Ynte Schukken; T J G M Lam; Marten L Beiboer; G Benedictus; A Brand
Management practices associated with low, medium, and high somatic cell counts in bulk milk.
Journal of dairy science 1998;81(7):1917-27.
1998: C van Schaik; AA Dijkhuizen; G Benedictus; Herman W Barkema; J L Koole
Exploratory study on the economic value of a closed farming system on Dutch dairy farms.
The Veterinary record 1998;142(10):240-2.
1998: J J Hage; Ynte Schukken; T Dijkstra; Herman W Barkema; P H van Valkengoed; GH Wentink
Milk production and reproduction during a subclinical bovine herpesvirus 1 infection on a dairy farm.
Preventive veterinary medicine 1998;34(2-3):97-106.
1998: Jan Sol; Herman W Barkema; I M Berghege; G H A Borst; L J Hoornick; Otlis Sampimon
[Mastitis following drying up associated with teat wipes contaminated with Pseudomonas aeruginosa].
Tijdschrift voor diergeneeskunde 1998;123(4):112-3.
1998: Herman W Barkema; Ynte Schukken; T J G M Lam; Marten L Beiboer; H Wilmink; G Benedictus; A Brand
Incidence of clinical mastitis in dairy herds grouped in three categories by bulk milk somatic cell counts.
Journal of dairy science 1998;81(2):411-9.
1997: Herman W Barkema; Ynte Schukken; T J G M Lam; D T Galligan; Marten L Beiboer; A Brand
Estimation of interdependence among quarters of the bovine udder with subclinical mastitis and implications for analysis.
Journal of dairy science 1997;80(8):1592-9.
1997: J J Hage; Piet Vellema; Ynte Schukken; Herman W Barkema; F A M Rijsewijk; JT van Oirschot; GH Wentink
Sheep do not have a major role in bovine herpesvirus 1 transmission.
Veterinary microbiology 1997;57(1):41-54.
1997: T J G M Lam; JH van Vliet; Ynte Schukken; FJ Grommers; A van Velden-Russcher; Herman W Barkema; A Brand
The effect of discontinuation of postmilking teat disinfection in low somatic cell count herds. II. Dynamics of intramammary infections.
The Veterinary quarterly 1997;19(2):47-53.
1997: T J G M Lam; JH van Vliet; Ynte Schukken; FJ Grommers; A van Velden-Russcher; Herman W Barkema; A Brand
The effect of discontinuation of postmilking teat disinfection in low somatic cell count herds. I. Incidence of clinical mastitis.
The Veterinary quarterly 1997;19(2):41-7.
1997: Piet Vellema; L Moll; Herman W Barkema; Ynte Schukken
Effect of cobalt supplementation on serum vitamin B12 levels, weight gain and survival rate in lambs grazing cobalt-deficient pastures.
The Veterinary quarterly 1997;19(1):1-5.
1997: Herman W Barkema; J Van der Schans; Ynte Schukken; A L De Gee; T J G M Lam; G Benedictus
Effect of freezing on somatic cell count of quarter milk samples as determined by a Fossomatic electronic cell counter.
Journal of dairy science 1997;80(2):422-6.
1996: J J Hage; Ynte Schukken; Herman W Barkema; G Benedictus; F A Rijsewijk; GH Wentink
Population dynamics of bovine herpesvirus 1 infection in a dairy herd.
Veterinary microbiology 1996;53(1-2):169-80.
1995: S H Loeffler; T J G M Lam; Herman W Barkema; D Scholten; A L Hessels; A M van Gestel
[The dairying veterinary approach to a high bulk milk cell count caused by Streptococcus agalactiae].
Tijdschrift voor diergeneeskunde 1995;120(16):458-63.
1995: Ynte Schukken; T J G M Lam; Mirjam Nielen; H Hogeveen; Herman W Barkema; F J Grommers
[Subclinical and clinical mastitis on dairy farms in The Netherlands: epidemiological developments].
Tijdschrift voor diergeneeskunde 1995;120(7):208-13.
1994: T Dijkstra; Herman W Barkema; R D van Buuren; J G van Spanje; H Jorritsma
[Determination of the excretion time of oxytetracycline and lugol in milk of intrauterine treated cows].
Tijdschrift voor diergeneeskunde 1994;119(21):634-6.