Greg P. Keefe

Overview

Best Publications

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

  S.J. LeBlanc;T.F. Duffield;K.E. Leslie;K.G. Bateman

  1132
  Citations

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

  H.W. Barkema;M.A.G. von Keyserlingk;J.P. Kastelic;T.J.G.M. Lam

  659
  Citations

• Streptococcus agalactiae mastitis: a review.

  G P Keefe

  437
  Citations

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

  Horacio Bach;Melissa Richard-Greenblatt;Eviatar Bach;Marcelo Chaffer

  336
  Citations

• The effect of treatment of clinical endometritis on reproductive performance in dairy cows

  S. J. LeBlanc;T. F. Duffield;K. E. Leslie;K. G. Bateman

  326
  Citations

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

  Ashwani Tiwari;John A. VanLeeuwen;Shawn L.B. McKenna;Greg P. Keefe

  311
  Citations

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

  Junwook Chi;John A. VanLeeuwen;Alfons Weersink;Gregory P. Keefe

  277
  Citations

• Association of cow and quarter-level factors at drying-off with new intramammary infections during the dry period.

  R.T Dingwell;K.E Leslie;Y.H Schukken;J.M Sargeant

  256
  Citations

• Herd-Level Mastitis-Associated Costs on Canadian Dairy Farms.

  Mahjoob Aghamohammadi;Denis Haine;David F. Kelton;Herman W. Barkema

  224
  Citations

• Johne's disease in Canada part II: disease impacts, risk factors, and control programs for dairy producers.

  Shawn L.B. McKenna;Greg P. Keefe;Ashwani Tiwari;John VanLeeuwen

  223
  Citations

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

  Greg Keefe

  215
  Citations

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

  A.M. Elmoslemany;G.P. Keefe;I.R. Dohoo;J.J. Wichtel

  203
  Citations

• The National Cohort of Dairy Farms--a data collection platform for mastitis research in Canada.

  Kristen K Reyher;S Dufour;H W Barkema;L Des Côteaux

  171
  Citations

• Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farms

  V. Saini;J.T. McClure;D. Léger;G.P. Keefe

  162
  Citations

• Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standards.

  Shawn L. McKenna;Gregory P. Keefe;H. W. Barkema;D. C. Sockett

  143
  Citations

• Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island.

  Richard G.M. Olde Riekerink;Herman W. Barkema;Stefan Veenstra;Doris E. Poole

  142
  Citations

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

  P. Arunvipas;Ian R. Dohoo;John A. VanLeeuwen;Gregory P. Keefe

  138
  Citations

• Knowledge gaps that hamper prevention and control of Mycobacterium avium subspecies paratuberculosis infection

  Herman W. Barkema;Karin Orsel;S.S. Nielsen;A.P. Koets;A.P. Koets

  136
  Citations

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

  John A. VanLeeuwen;Gregory P. Keefe;R. Tremblay;C. Power

  131
  Citations

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

  Omid Nekouei;John VanLeeuwen;Henrik Stryhn;David Kelton

  130
  Citations

• Identification of bovine-associated coagulase-negative staphylococci by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry using a direct transfer protocol

  M. Cameron;H.W. Barkema;J. De Buck;S. De Vliegher

  115
  Citations

• Effects of seropositivity for bovine leukemia virus, bovine viral diarrhoea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on culling in dairy cattle in four Canadian provinces.

  Ashwani Tiwari;John A. VanLeeuwen;Ian R. Dohoo;Henrik Stryhn

  114
  Citations

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

  A. Tiwari;J. A. VanLeeuwen;I. R. Dohoo;G. P. Keefe

  103
  Citations

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

  Ane Nødtvedt;Ian Dohoo;Javier Sanchez;Gary Conboy

  94
  Citations

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

  A.M. Elmoslemany;A.M. Elmoslemany;G.P. Keefe;I.R. Dohoo;B.M. Jayarao

  87
  Citations

• Cow-Level Prevalence of Paratuberculosis in Culled Dairy Cows in Atlantic Canada and Maine

  S.L.B. McKenna;G.P. Keefe;H.W. Barkema;J. McClure

  87
  Citations

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

  Omid Nekouei;John VanLeeuwen;Javier Sanchez;David Kelton

  77
  Citations

• Evaluation of minor pathogen intramammary infection, susceptibility parameters, and somatic cell counts on the development of new intramammary infections with major mastitis pathogens

  K.K. Reyher;I.R. Dohoo;D.T. Scholl;G.P. Keefe

  72
  Citations