G. Keefe

H. Barkema, J. VanLeeuwen, G. Keefe, 2005, Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc.

Herd prevalence and incidence of Streptococcus agalactiae in the dairy industry of Prince Edward Island.

E. Spangler, I. Dohoo, G. Keefe, 1997, Journal of dairy science.

Communication skills training and assessment of food animal production medicine veterinarians: A component of a voluntary Johne's disease control program

C. Adams, J. VanLeeuwen, G. Keefe, 2022, Journal of Dairy Science.

Gap between producers and veterinarians regarding biosecurity on Quebec dairy farms.

D. Kelton, H. Barkema, G. Keefe, 2020, The Canadian veterinary journal = La revue veterinaire canadienne.

Immunogenicity of PtpA secreted during Mycobacterium avium ssp. paratuberculosis infection in cattle.

Eviatar Bach, H. Bach, G. Keefe, 2018, Veterinary immunology and immunopathology.

Sensitivity of solid culture, broth culture, and real-time PCR assays for milk and colostrum samples from Mycobacterium avium ssp. paratuberculosis-infectious dairy cows.

G. Keefe, M. Chaffer, S. McKenna, 2015, Journal of dairy science.

Comparison of Bacterial Culture, Histopathology, and Immunohistochemistry for the Diagnosis of Johne's Disease in Culled Dairy Cows

G. Keefe, S. McKenna, B. Ikede, 2008, Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc.

Effects of Seropositivity for Bovine Leukemia Virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on Risk of Culling in Dairy Cattle

Haddad, H. Stryhn, I. Dohoo, 2019 .

Seroprevalence of infection with Mycobacterium avium subspecies paratuberculosis, bovine leukemia virus, and bovine viral diarrhea virus in maritime Canada dairy cattle.

J. VanLeeuwen, G. Keefe, J. Wichtel, 2001, The Canadian veterinary journal = La revue veterinaire canadienne.

Typing of Mycobacterium avium Subspecies paratuberculosis Isolates from Newfoundland Using Fragment Analysis

G. Keefe, K. Tahlan, H. Whitney, 2015, PloS one.

Evaluation of environmental fecal culture for Mycobacterium avium subspecies paratuberculosis detection in dairy herds and association with apparent within-herd prevalence.

H. Barkema, I. Dohoo, G. Keefe, 2013, The Canadian veterinary journal = La revue veterinaire canadienne.

Short communication: Evaluation of MALDI-TOF mass spectrometry and a custom reference spectra expanded database for the identification of bovine-associated coagulase-negative staphylococci.

G. Keefe, J. Middleton, M. Chaffer, 2018, Journal of dairy science.

Effects of seropositivity for bovine leukaemia virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on the calving to conception interval in maritime Canadian dairy cattle

H. Stryhn, I. Dohoo, J. VanLeeuwen, 2003 .

Seroprevalence and productivity effects of infection with bovine leukemia virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Maritime Canadian dairy cattle

J. VanLeeuwen, G. Keefe, A. Tiwari, 2002 .

Biosecurity and herd health management practices on Canadian dairy farms.

D. Kelton, H. Barkema, G. Keefe, 2019, Journal of dairy science.

Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herds.

H. Stryhn, H. Barkema, I. Dohoo, 2012, The Canadian veterinary journal = La revue veterinaire canadienne.

Neospora then and now: prevalence of Neospora caninum in Maritime Canada in 1979, 1989, and 1998.

J. VanLeeuwen, G. Keefe, 2000, The Canadian veterinary journal = La revue veterinaire canadienne.

Evaluation of the University of Minnesota Tri-plate and 3M Petrifilm for the isolation of Staphylococcus aureus and Streptococcus species from clinically mastitic milk samples.

I. Dohoo, G. Keefe, S. McKenna, 2009, Journal of dairy science.

Relationships between type of hoof lesion and behavioral signs of lameness in Holstein cows housed in Canadian tiestall facilities.

J. Sanchez, M. Cockram, G. Keefe, 2020, Journal of dairy science.

Effect of freezing on somatic cell count of quarter milk samples using flow cytometry and flouro-opto-electronic methods

I. Dohoo, G. Keefe, M. Trenholm, 2007 .

Johne's disease in Canada Part I: clinical symptoms, pathophysiology, diagnosis, and prevalence in dairy herds.

H. Barkema, J. VanLeeuwen, G. Keefe, 2006, The Canadian veterinary journal = La revue veterinaire canadienne.

Assessment of the relative sensitivity of milk ELISA for detection of Mycobacterium avium ssp. paratuberculosis infectious dairy cows.

Javier Sánchez, G. Keefe, M. Chaffer, 2017, Journal of dairy science.

Sensitivity and specificity of repeated test results from a commercial milk enzyme-linked immunosorbent assay for detection of Mycobacterium avium subspecies paratuberculosis in dairy cattle.

I. Dohoo, G. Keefe, S. McKenna, 2015, Journal of the American Veterinary Medical Association.

Seroprevalence of production limiting diseases in Ontario and Maritime dairy cattle

J. VanLeeuwen, G. Keefe, J. Wichtel, 2000 .

Efficacy of intramammary tilmicosin and risk factors for cure of Staphylococcus aureus infection in the dry period.

D. Kelton, Y. Schukken, T. Duffield, 2003, Journal of dairy science.

Herd- and cow-level risk factors associated with subclinical mastitis in dairy farms from the High Plains of the northern Antioquia, Colombia.

I. Dohoo, J. Sanchez, G. Keefe, 2014, Journal of dairy science.

Prepartum monensin for the reduction of energy associated disease in postpartum dairy cows.

T. Duffield, G. Keefe, L. Descôteaux, 2002, Journal of dairy science.

Protein Kinase G Induces an Immune Response in Cows Exposed to Mycobacterium avium Subsp. paratuberculosis

Eviatar Bach, H. Bach, G. Keefe, 2018, BioMed research international.

Short communication: Extended-spectrum cephalosporin-resistant Escherichia coli in colostrum from New Brunswick, Canada, dairy cows harbor blaCMY-2 and blaTEM resistance genes.

J. Sanchez, J. VanLeeuwen, G. Keefe, 2017, Journal of dairy science.

Short communication: Describing mortality and euthanasia practices on Canadian dairy farms.

D. Kelton, H. Barkema, S. Roche, 2020, Journal of dairy science.

Lifetime effects of infection with bovine leukemia virus on longevity and milk production of dairy cows.

D. Kelton, H. Stryhn, J. VanLeeuwen, 2016, Preventive veterinary medicine.

Diagnostic performance of an indirect enzyme-linked immunosorbent assay (ELISA) to detect bovine leukemia virus antibodies in bulk-tank milk samples.

G. Keefe, J. Durocher, O. Nekouei, 2016, The Canadian veterinary journal = La revue veterinaire canadienne.

Predicting within-herd prevalence of infection with bovine leukemia virus using bulk-tank milk antibody levels.

D. Kelton, H. Stryhn, J. VanLeeuwen, 2015, Preventive veterinary medicine.

Herd-level risk factors for infection with bovine leukemia virus in Canadian dairy herds.

D. Kelton, Javier Sánchez, J. VanLeeuwen, 2015, Preventive veterinary medicine.

Monensin toxicosis in a dairy herd.

H. Barkema, G. Keefe, Marta González, 2005, The Canadian veterinary journal = La revue veterinaire canadienne.

Test characteristics from latent-class models of the California Mastitis Test.

H. Barkema, C. Sanford, I. Dohoo, 2006, Preventive veterinary medicine.

Diagnostic performance of direct and indirect methods for assessing failure of transfer of passive immunity in dairy calves using latent class analysis.

G. Keefe, J. McClure, I. Elsohaby, 2019, Preventive veterinary medicine.

Defining and diagnosing postpartum clinical endometritis and its impact on reproductive performance in dairy cows.

J. Walton, S. LeBlanc, T. Duffield, 2002, Journal of dairy science.

Measures of estrus detection and pregnancy in dairy cows after administration of gonadotropin-releasing hormone within an estrus synchronization program based on prostaglandin F2 alpha.

D. Kelton, S. LeBlanc, G. Keefe, 1998, Journal of dairy science.

Laboratory evaluation of 3M Petrifilms and University of Minnesota Bi-plates as potential on-farm tests for clinical mastitis.

I. Dohoo, G. Keefe, S. McKenna, 2009, Journal of dairy science.

Direct Production Losses and Treatment Costs due to Four Dairy Cattle Diseases

A. Weersink, J. Chi, J. VanLeeuwen, 2002 .

Microbiological quality of bulk tank raw milk in Prince Edward Island dairy herds.

I. Dohoo, G. Keefe, R. Dingwell, 2009, Journal of dairy science.

The association between bulk tank milk analysis for raw milk quality and on-farm management practices.

H. Stryhn, I. Dohoo, G. Keefe, 2010, Preventive veterinary medicine.

Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 1: overall risk factors.

I. Dohoo, G. Keefe, B. Jayarao, 2009, Journal of dairy science.

Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 2: bacteria count-specific risk factors.

I. Dohoo, G. Keefe, B. Jayarao, 2009, Journal of dairy science.

HERD LEVEL RISK FACTORS FOR ELEVATED TOTAL BACTERIAL COUNT IN BULK TANK MILK OF DAIRY HERDS

G. Keefe, A. Elmoslemany, 2009 .

Using serum and plasma samples to assess failure of transfer of passive immunity in dairy calves.

G. Keefe, J. McClure, I. Elsohaby, 2019, Journal of dairy science.

Invited review: Changes in the dairy industry affecting dairy cattle health and welfare.

M A G von Keyserlingk, D F Kelton, D. Kelton, 2015, Journal of dairy science.

The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, Canada.

I. Dohoo, J. VanLeeuwen, G. Keefe, 2003, Preventive veterinary medicine.

The efficacy of intramammary tilmicosin at drying-off, and other risk factors for the prevention of new intramammary infections during the dry period.

D. Kelton, Y. Schukken, T. Duffield, 2002, Journal of dairy science.

Management factors related to seroprevalences to bovine viral-diarrhoea virus, bovine-leukosis virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in dairy herds in the Canadian Maritimes.

A. Weersink, J. Chi, J. VanLeeuwen, 2002, Preventive veterinary medicine.

Investigation of within- and between-herd variability of bovine leukaemia virus bulk tank milk antibody levels over different sampling intervals in the Canadian Maritimes.

H. Stryhn, G. Keefe, J. McClure, 2018, Preventive veterinary medicine.

Using On-Farm Mastitis Culturing

G. Keefe, M. Cameron, K. Macdonald, 2011 .

Strengthening a One Health approach to emerging zoonoses

M. Reed, H. Carabin, K. Nowak, 2023, FACETS.

Direct production losses and treatment costs from bovine viral diarrhoea virus, bovine leukosis virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum.

A. Weersink, J. Chi, J. VanLeeuwen, 2002, Preventive veterinary medicine.

Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattle.

H. Barkema, G. Keefe, S. McKenna, 2006, Veterinary microbiology.

Evaluation of the stability of Ostertagia ostertagi ELISA microtitre plates over time using cow milk samples.

H. Stryhn, I. Dohoo, Javier Sánchez, 2005, Veterinary parasitology.

Increase in milk yield following eprinomectin treatment at calving in pastured dairy cattle.

I. Dohoo, Javier Sánchez, G. Keefe, 2002, Veterinary parasitology.

Long-term assessment of bilirubin and transaminase trends in pediatric intestinal failure patients during the era of hepatoprotective parenteral nutrition.

J. Knell, T. Jaksic, S. Staffa, 2021, Journal of pediatric surgery.

Limitations of variable number of tandem repeat typing identified through whole genome sequencing of Mycobacterium avium subsp. paratuberculosis on a national and herd level

D. Kelton, R. Kao, R. Zadoks, 2015, BMC Genomics.

Genotypic and phenotypic characterization of Staphylococcus aureus causing persistent and nonpersistent subclinical bovine intramammary infections during lactation or the dry period.

B. Talbot, G. Keefe, D. Scholl, 2015, Journal of dairy science.

Coinparative Efficacy of a Novel Intrainaininary Dry Cow Antibiotic to Eliininate Subclinical Mastitis in the Dry Period

T. Duffield, G. Keefe, K. Leslie, 2019 .

Short communication: Whole-genome sequence analysis of 4 fecal blaCMY-2-producing Escherichia coli isolates from Holstein dairy calves.

Javier Sánchez, G. Keefe, J. McClure, 2019, Journal of dairy science.

Risk factors for milk off-flavours in dairy herds from Prince Edward Island, Canada.

I. Dohoo, G. Keefe, J. Wichtel, 2004, Preventive veterinary medicine.

Evaluation of Digital and Optical Refractometers for Assessing Failure of Transfer of Passive Immunity in Dairy Calves

G. Keefe, J. McClure, I. Elsohaby, 2015, Journal of veterinary internal medicine.

Quantification of bovine immunoglobulin G using transmission and attenuated total reflectance infrared spectroscopy

R. Shaw, C. B. Riley, G. Keefe, 2016, Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc.

A rapid field test for the measurement of bovine serum immunoglobulin G using attenuated total reflectance infrared spectroscopy

R. Shaw, S. Hou, C. B. Riley, 2015, BMC Veterinary Research.

Measurement of serum immunoglobulin G in dairy cattle using Fourier-transform infrared spectroscopy: a reagent free approach.

R. Shaw, S. Hou, C. B. Riley, 2014, Veterinary journal.

Rapid assessment of bovine colostrum quality: How reliable are transmission infrared spectroscopy and digital and optical refractometers?

G. Keefe, J. McClure, I. Elsohaby, 2017, Journal of dairy science.

The REFLECT Statement: Methods and Processes of Creating Reporting Guidelines for Randomized Controlled Trials for Livestock and Food Safety by Modifying the CONSORT Statement †

Martin P. Ward, D. R. Smith, J. Sofos, 2010, Zoonoses and public health.

The REFLECT statement: methods and processes of creating reporting guidelines for randomized controlled trials for livestock and food safety.

D. R. Smith, J. Sofos, M. Ward, 2010, Journal of food protection.

The REFLECT statement: methods and processes of creating reporting guidelines for randomized controlled trials for livestock and food safety.

D. R. Smith, J. Sofos, M. Ward, 2010, Journal of veterinary internal medicine.

The REFLECT statement: methods and processes of creating reporting guidelines for randomized controlled trials for livestock and food safety.

D. R. Smith, David R. Smith, M. Greiner, 2010, Journal of food protection.

Evaluation of melengestrol acetate and equine chorionic gonadotropin for out-of-season breeding in sheep on Prince Edward Island.

G. Keefe, J. Wichtel, J. Wichtel, 2000, The Canadian veterinary journal = La revue veterinaire canadienne.

Update on control of Staphylococcus aureus and Streptococcus agalactiae for management of mastitis.

G. Keefe, 2012, The Veterinary clinics of North America. Food animal practice.

Prevalence, fecal egg counts, and species identification of gastrointestinal nematodes in replacement dairy heifers in Canada.

D. Kelton, H. Barkema, E. Redman, 2019, Journal of dairy science.

Ultrasonic imaging of marbling at feedlot entry as a predictor of carcass quality grade

J. Valcour, I. Dohoo, G. Keefe, 2004 .

Bacteriology and somatic cell counts in milk samples from ewes on a Scottish farm.

G. Keefe, W. Donachie, H. Hariharan, 2004, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.

Milk antibodies against Ostertagia ostertagi: relationships with milk IgG and production parameters in lactating dairy cattle.

I. Dohoo, Javier Sánchez, G. Keefe, 2004, Veterinary parasitology.

Comparison of Oro-rumenal probe and rumenocentesis for prediction of rumen pH in dairy cattle

G. Keefe, T. Ogilvie, 1997 .

Canadian National Dairy Study: Describing Canadian dairy producer practices and perceptions surrounding cull cow management.

D. Kelton, H. Barkema, S. Roche, 2020, Journal of dairy science.

Predicting the effect of anthelmintic treatment on milk production of dairy cattle in Canada using an Ostertagia ostertagi ELISA from individual milk samples.

H. Stryhn, I. Dohoo, Javier Sánchez, 2013, Preventive veterinary medicine.

The use of an indirect Ostertagia ostertagi ELISA to predict milk production response after anthelmintic treatment in confined and semi-confined dairy herds.

I. Dohoo, Javier Sánchez, G. Keefe, 2005, Veterinary parasitology.

Evaluation of quarter-based selective dry cow therapy using Petrifilm on-farm milk culture: A randomized controlled trial.

G. Keefe, S. Dufour, J. Roy, 2020, Journal of dairy science.

An observational cohort study on persistency of internal teat sealant residues in milk after calving in dairy cows.

G. Keefe, S. Dufour, J. Roy, 2018, Journal of dairy science.

Development and implementation of a risk assessment and management program for enzootic bovine leukosis in Atlantic Canada.

H. Stryhn, G. Keefe, E. John, 2020, Journal of dairy science.

Prevalence of lameness and associated risk factors on dairy farms in the Maritime Provinces of Canada.

J. Sanchez, M. Cockram, G. Keefe, 2019, Journal of dairy science.

The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cows.

I. Dohoo, Javier Sánchez, G. Keefe, 2002, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.

Canadian dairy farmers' perception of the efficacy of biosecurity practices.

D. Kelton, H. Barkema, G. Keefe, 2019, Journal of dairy science.

Carryover of bovine leukemia virus antibodies in samples from shared milk meters.

J. Sanchez, G. Keefe, O. Nekouei, 2015, Journal of Dairy Science.

Diagnosing Intramammary Infection: Meta-Analysis and Mapping Review on Frequency and Udder Health Relevance of Microorganism Species Isolated from Bovine Milk Samples

D. Kelton, H. Barkema, T. DeVries, 2022, Animals : an open access journal from MDPI.

Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herds.

I. Dohoo, J. Haddad, J. VanLeeuwen, 2009, Preventive veterinary medicine.

A longitudinal study of gastrointestinal parasites in Canadian dairy farms. The value of an indirect Ostertagia ostertagi ELISA as a monitoring tool.

I. Dohoo, Javier Sánchez, G. Keefe, 2002, Veterinary parasitology.

Development of a predictive model for bovine leukemia virus proviral load

H. Stryhn, G. Keefe, J. McClure, 2022, Journal of veterinary internal medicine.

Relationships between bulk-tank antibodies to Ostertagia ostertagi and herd-management practices and measures of milk production in Nova Scotia dairy herds.

I. Dohoo, G. Keefe, G. Conboy, 2000, Preventive veterinary medicine.

Relationships among milk urea-nitrogen, dietary parameters, and fecal nitrogen in commercial dairy herds.

I. Dohoo, J. VanLeeuwen, G. Keefe, 2008, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.

The Economics Of Controlling Infectious Diseases On Dairy Farms

Junwook Chi, Alfons Weersink, A. Weersink, 2002 .

Use of an ELISA to Monitor Internal Parasite Burdens in Dairy Cows

J. Guitian, I. Dohoo, G. Keefe, 1999, American Association of Bovine Practitioners Conference Proceedings.

Congenital dyserythropoiesis and dyskeratosis in a polled Hereford calf.

G. Keefe, J. Lofstedt, B. Ikede, 1994, The Canadian veterinary journal = La revue veterinaire canadienne.

Johne's disease in Canada part I

H. Barkema, J. VanLeeuwen, G. Keefe, 2006 .

Prevalence of hock, knee, and neck skin lesions and associated risk factors in dairy herds in the Maritime Provinces of Canada.

J. Sanchez, M. Cockram, G. Keefe, 2019, Journal of dairy science.

A survey of demographics and information demands of dairy producers.

J. VanLeeuwen, G. Keefe, 2001, The Canadian veterinary journal = La revue veterinaire canadienne.

Identifying management and disease priorities of Canadian dairy industry stakeholders.

D. Kelton, H. Barkema, G. Keefe, 2016, Journal of dairy science.

Partial prediction of the duration and the clinical status of Staphylococcus aureus bovine intramammary infections based on the phenotypic and genotypic analysis of isolates.

G. Keefe, F. Malouin, J. Roy, 2019, Veterinary microbiology.

phe-Short communication: Extended-spectrum cephalosporin-resistant Escherichia coli in colostrum from New Brunswick, Canada, dairy cows harbor bla CMY-2 and bla TEM resistance genes

G. Keefe, Jennifer Sánchez, J. McClure, 2017 .

Strengthening a One Health approach to emerging zoonoses

M. Reed, H. Carabin, K. Nowak, 2023, FACETS.

Novel Cell Preservation Technique to Extend Bovine In Vitro White Blood Cell Viability

Javier Sánchez, H. Bach, G. Keefe, 2015, PloS one.

Application of transmission infrared spectroscopy and partial least squares regression to predict immunoglobulin G concentration in dairy and beef cow colostrum.

D. Haines, G. Keefe, J. McClure, 2018, Journal of animal science.

Canadian National Dairy Study: Heifer calf management.

D. Kelton, H. Barkema, T. Duffield, 2018, Journal of dairy science.