Publications by authors named "Greg Keefe"

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Dynamics and impacts of staphylococcal intramammary infections during dairy cows' nonlactating periods.
Daryna Kurban, Zhangbin Cai, Jean-Philippe Roy, Trevor J DeVries, Jennifer Ronholm, Greg P Keefe

J Dairy Sci· October 2025

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Impact of high proviral load on milk production, reproduction and subclinical diseases in dairy cows infected with bovine leukemia virus.
Simon Bourassi, Shawn McKenna, Greg Keefe, Emily John, John VanLeeuwen

Front Vet Sci· March 2025

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Temporal patterns of bovine leukemia virus infection in dairy herds in Atlantic Canada.
Emily E John, Marguerite Cameron, Henrik Stryhn, Greg Keefe, J Trenton McClure

Can Vet J· May 2024

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Diagnosing Intramammary Infection: Meta-Analysis and Mapping Review on Frequency and Udder Health Relevance of Microorganism Species Isolated from Bovine Milk Samples.
Daryna Kurban, Jean-Philippe Roy, Fidèle Kabera, Annie Fréchette, Maryse Michèle Um, Greg P Keefe

Animals (Basel)· November 2022

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Development of a predictive model for bovine leukemia virus proviral load.
Emily E John, Casey Droscha, Marguerite Cameron, Henrik Stryhn, Greg Keefe

J Vet Intern Med· September 2022

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Communication skills training and assessment of food animal production medicine veterinarians: A component of a voluntary Johne's disease control program.
Karen A MacDonald-Phillips, Shawn L B McKenna, Darcy H Shaw, Greg P Keefe, John VanLeeuwen

J Dairy Sci· March 2022

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Dairy producer satisfaction and knowledge transfer with the veterinary-administered risk assessment and management plan in a voluntary Johne's disease control program.
Karen A MacDonald-Phillips, Greg P Keefe, John VanLeeuwen, Darcy H Shaw, J McClure

J Dairy Sci· March 2022

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Bayesian estimation of diagnostic accuracy of somatic cell counts history and on-farm milk culture using Petrifilm® to identify quarters or cows that should be treated with antimicrobials in selective treatment protocols at dry off.
Fidèle Kabera, Jean-Philippe Roy, Greg Keefe, Simon Dufour

Prev Vet Med· October 2021

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Evaluation of quarter-based selective dry cow therapy using Petrifilm on-farm milk culture: A randomized controlled trial.
Fidèle Kabera, Simon Dufour, Greg Keefe, Marguerite Cameron, Jean-Philippe Roy

J Dairy Sci· August 2020

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Short communication: Whole-genome sequence analysis of 4 fecal bla-producing Escherichia coli isolates from Holstein dairy calves.
Babafela Awosile, Julian Reyes-Velez, Yesid Cuesta-Astroz, Juan Carlos Rodríguez-Lecompte, Matthew E Saab, Greg Keefe

J Dairy Sci· January 2020

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Effect of passive transfer of immunity on growth performance of preweaned dairy calves.
Ibrahim Elsohaby, Marguerite Cameron, Ahmed Elmoslemany, J Trenton McClure, Greg Keefe

Can J Vet Res· April 2019

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Diagnostic performance of direct and indirect methods for assessing failure of transfer of passive immunity in dairy calves using latent class analysis.
Ibrahim Elsohaby, Marshal M Mweu, Yasser S Mahmmod, J Trenton McClure, Greg P Keefe

Prev Vet Med· March 2019

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Canadian National Dairy Study: Heifer calf management.
Charlotte B Winder, Cathy A Bauman, Todd F Duffield, Herman W Barkema, Greg P Keefe

J Dairy Sci· November 2018

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Protein Kinase G Induces an Immune Response in Cows Exposed to Subsp. .
Horacio Bach, Melissa Richard-Greenblatt, Eviatar Bach, Marcelo Chaffer, Wanika Lai, Greg Keefe

Biomed Res Int· September 2018

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An observational cohort study on persistency of internal teat sealant residues in milk after calving in dairy cows.
Fidèle Kabera, Simon Dufour, Greg Keefe, Jean-Philippe Roy

J Dairy Sci· July 2018

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Investigation of within- and between-herd variability of bovine leukaemia virus bulk tank milk antibody levels over different sampling intervals in the Canadian Maritimes.
Emily E John, Omid Nekouei, J T McClure, Marguerite Cameron, Greg Keefe

Prev Vet Med· June 2018

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Salmonella enterica and extended-spectrum cephalosporin-resistant Escherichia coli recovered from Holstein dairy calves from 8 farms in New Brunswick, Canada.
Babafela Awosile, J McClure, Javier Sanchez, Juan Carlos Rodriguez-Lecompte, Greg Keefe

J Dairy Sci· April 2018

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Immunogenicity of PtpA secreted during Mycobacterium avium ssp. paratuberculosis infection in cattle.
Eviatar Bach, Eran A Raizman, Rich Vanderwal, Paolete Soto, Marcelo Chaffer, Greg Keefe

Vet Immunol Immunopathol· April 2018

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Application of transmission infrared spectroscopy and partial least squares regression to predict immunoglobulin G concentration in dairy and beef cow colostrum.
Ibrahim Elsohaby, M Claire Windeyer, Deborah M Haines, Elizabeth R Homerosky, Jennifer M Pearson, Greg P Keefe

J Anim Sci· March 2018

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Distribution of non-aureus staphylococci species in udder quarters with low and high somatic cell count, and clinical mastitis.
Larissa A Z Condas, Jeroen De Buck, Diego B Nobrega, Domonique A Carson, Jean-Philippe Roy, Greg P Keefe

J Dairy Sci· July 2017

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Assessment of the relative sensitivity of milk ELISA for detection of Mycobacterium avium ssp. paratuberculosis infectious dairy cows.
Emilie L Laurin, Javier Sanchez, Marcelo Chaffer, Shawn L B McKenna, Greg P Keefe

J Dairy Sci· January 2017

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Lifetime effects of infection with bovine leukemia virus on longevity and milk production of dairy cows.
Omid Nekouei, John VanLeeuwen, Henrik Stryhn, David Kelton, Greg Keefe

Prev Vet Med· October 2016

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Genome-Wide Diversity and Phylogeography of Mycobacterium avium subsp. paratuberculosis in Canadian Dairy Cattle.
Christina Ahlstrom, Herman W Barkema, Karen Stevenson, Ruth N Zadoks, Roman Biek, Greg P Keefe

PLoS One· July 2016

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Diagnostic performance of an indirect enzyme-linked immunosorbent assay (ELISA) to detect bovine leukemia virus antibodies in bulk-tank milk samples.
Omid Nekouei, Jean Durocher, Greg Keefe

Can Vet J· July 2016

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Predicting within-herd prevalence of infection with bovine leukemia virus using bulk-tank milk antibody levels.
Omid Nekouei, Henrik Stryhn, John VanLeeuwen, David Kelton, Paul Hanna, Greg Keefe

Prev Vet Med· November 2015

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