Greg P. Keefe - Publications

Affiliations: 
University of Prince Edward Island (Canada) 
Area:
Veterinary Science Biology, Epidemiology

74 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2022 Kurban D, Roy JP, Kabera F, Fréchette A, Um MM, Albaaj A, Rowe S, Godden S, Adkins PRF, Middleton JR, Gauthier ML, Keefe GP, DeVries TJ, Kelton DF, Moroni P, et al. Diagnosing Intramammary Infection: Meta-Analysis and Mapping Review on Frequency and Udder Health Relevance of Microorganism Species Isolated from Bovine Milk Samples. Animals : An Open Access Journal From Mdpi. 12. PMID 36496808 DOI: 10.3390/ani12233288  0.523
2020 John EE, Keefe G, Cameron M, Stryhn H, McClure JT. Development and implementation of a risk assessment and management program for enzootic bovine leukosis in Atlantic Canada. Journal of Dairy Science. 103: 8398-8406. PMID 32684477 DOI: 10.3168/Jds.2019-17434  0.433
2020 Kabera F, Dufour S, Keefe G, Cameron M, Roy JP. Evaluation of quarter-based selective dry cow therapy using Petrifilm on-farm milk culture: A randomized controlled trial. Journal of Dairy Science. PMID 32505410 DOI: 10.3168/Jds.2019-17438  0.428
2020 Roche SM, Renaud DL, Genore R, Shock DA, Bauman C, Croyle S, Barkema HW, Dubuc J, Keefe GP, Kelton DF. Canadian National Dairy Study: Describing Canadian dairy producer practices and perceptions surrounding cull cow management. Journal of Dairy Science. PMID 32089309 DOI: 10.3168/Jds.2019-17390  0.522
2020 Roche SM, Genore R, Renaud DL, Shock DA, Bauman C, Croyle S, Barkema HW, Dubuc J, Keefe GP, Kelton DF. Short communication: Describing mortality and euthanasia practices on Canadian dairy farms. Journal of Dairy Science. PMID 32089307 DOI: 10.3168/Jds.2019-17595  0.495
2019 Denis-Robichaud J, Kelton DF, Bauman CA, Barkema HW, Keefe GP, Dubuc J. Canadian dairy farmers' perception of the efficacy of biosecurity practices. Journal of Dairy Science. PMID 31477301 DOI: 10.3168/Jds.2019-16312  0.483
2019 Denis-Robichaud J, Kelton DF, Bauman CA, Barkema HW, Keefe GP, Dubuc J. Biosecurity and herd health management practices on Canadian dairy farms. Journal of Dairy Science. PMID 31351735 DOI: 10.3168/Jds.2018-15921  0.545
2019 Elsohaby I, Mweu MM, Mahmmod YS, McClure JT, Keefe GP. Diagnostic performance of direct and indirect methods for assessing failure of transfer of passive immunity in dairy calves using latent class analysis. Preventive Veterinary Medicine. 164: 72-77. PMID 30771896 DOI: 10.1016/J.Prevetmed.2019.02.003  0.335
2018 Winder CB, Bauman CA, Duffield TF, Barkema HW, Keefe GP, Dubuc J, Uehlinger F, Kelton DF. Canadian National Dairy Study: Heifer calf management. Journal of Dairy Science. PMID 30172400 DOI: 10.3168/Jds.2018-14680  0.512
2018 Aghamohammadi M, Haine D, Kelton DF, Barkema HW, Hogeveen H, Keefe GP, Dufour S. Herd-Level Mastitis-Associated Costs on Canadian Dairy Farms. Frontiers in Veterinary Science. 5: 100. PMID 29868620 DOI: 10.3389/Fvets.2018.00100  0.408
2018 John EE, Nekouei O, McClure JT, Cameron M, Keefe G, Stryhn H. Investigation of within- and between-herd variability of bovine leukaemia virus bulk tank milk antibody levels over different sampling intervals in the Canadian Maritimes. Preventive Veterinary Medicine. 154: 90-94. PMID 29685449 DOI: 10.1016/J.Prevetmed.2018.03.015  0.398
2018 Kabera F, Dufour S, Keefe G, Roy JP. An observational cohort study on persistency of internal teat sealant residues in milk after calving in dairy cows. Journal of Dairy Science. PMID 29627239 DOI: 10.3168/Jds.2017-13986  0.445
2018 Awosile B, McClure J, Sanchez J, Rodriguez-Lecompte JC, Keefe G, Heider LC. Salmonella enterica and extended-spectrum cephalosporin-resistant Escherichia coli recovered from Holstein dairy calves from 8 farms in New Brunswick, Canada. Journal of Dairy Science. PMID 29428755 DOI: 10.3168/Jds.2017-13277  0.349
2018 Elsohaby I, Windeyer MC, Haines DM, Homerosky E, Pearson J, McClure JT, Keefe GP. Application of transmission infrared spectroscopy and partial least squares regression to predict immunoglobulin G concentration in dairy and beef cow colostrum. Journal of Animal Science. PMID 29385472 DOI: 10.1093/Jas/Sky003  0.422
2017 Barkema HW, Orsel K, Nielsen SS, Koets AP, Rutten VPMG, Bannantine JP, Keefe GP, Kelton DF, Wells SJ, Whittington RJ, Mackintosh CG, Manning EJ, Weber MF, Heuer C, Forde TL, et al. Knowledge gaps that hamper prevention and control of Mycobacterium avium subspecies paratuberculosis infection. Transboundary and Emerging Diseases. PMID 28941207 DOI: 10.1111/Tbed.12723  0.487
2017 Condas LAZ, De Buck J, Nobrega DB, Carson DA, Roy JP, Keefe GP, DeVries TJ, Middleton JR, Dufour S, Barkema HW. Distribution of non-aureus staphylococci species in udder quarters with low and high somatic cell count, and clinical mastitis. Journal of Dairy Science. PMID 28456402 DOI: 10.3168/Jds.2016-12479  0.499
2016 Laurin EL, Sanchez J, Chaffer M, McKenna SL, Keefe GP. Assessment of the relative sensitivity of milk ELISA for detection of Mycobacterium avium subspecies paratuberculosis infectious dairy cows. Journal of Dairy Science. PMID 27837970 DOI: 10.3168/Jds.2016-11194  0.535
2016 Nekouei O, VanLeeuwen J, Stryhn H, Kelton D, Keefe G. Lifetime effects of infection with bovine leukemia virus on longevity and milk production of dairy cows. Preventive Veterinary Medicine. 133: 1-9. PMID 27720022 DOI: 10.1016/J.Prevetmed.2016.09.011  0.452
2016 Ahlstrom C, Barkema HW, Stevenson K, Zadoks RN, Biek R, Kao R, Trewby H, Haupstein D, Kelton DF, Fecteau G, Labrecque O, Keefe GP, McKenna SL, Tahlan K, De Buck J. Genome-Wide Diversity and Phylogeography of Mycobacterium avium subsp. paratuberculosis in Canadian Dairy Cattle. Plos One. 11: e0149017. PMID 26871723 DOI: 10.1371/Journal.Pone.0149017  0.518
2016 Robles I, Kelton DF, Barkema H, Keefe GP, Roy JP, von Keyserlingk MA, DeVries TJ. 0124 Associations of cow-level factors with the risk of poor hygiene Journal of Animal Science. 94: 58-58. DOI: 10.2527/Jam2016-0124  0.392
2016 Robles I, Kelton DF, Barkema H, Keefe GP, Roy JP, von Keyserlingk MA, DeVries TJ. 0116 Associations of hygiene and lying behavior with the risk of elevated somatic cell count and lameness Journal of Animal Science. 94: 54-54. DOI: 10.2527/Jam2016-0116  0.366
2015 Nekouei O, Stryhn H, VanLeeuwen J, Kelton D, Hanna P, Keefe G. Predicting within-herd prevalence of infection with bovine leukemia virus using bulk-tank milk antibody levels. Preventive Veterinary Medicine. 122: 53-60. PMID 26518725 DOI: 10.1016/J.Prevetmed.2015.10.009  0.463
2015 Laurin E, McKenna S, Chaffer M, Keefe G. Sensitivity of solid culture, broth culture, and real-time PCR assays for milk and colostrum samples from Mycobacterium avium ssp. paratuberculosis-infectious dairy cows. Journal of Dairy Science. 98: 8597-609. PMID 26476944 DOI: 10.3168/Jds.2014-8758  0.523
2015 Laurin EL, McKenna SL, Sanchez J, Bach H, Rodriguez-Lecompte JC, Chaffer M, Keefe GP. Novel Cell Preservation Technique to Extend Bovine In Vitro White Blood Cell Viability. Plos One. 10: e0140046. PMID 26447691 DOI: 10.1371/Journal.Pone.0140046  0.386
2015 Barkema HW, von Keyserlingk MA, Kastelic JP, Lam TJ, Luby C, Roy JP, LeBlanc SJ, Keefe GP, Kelton DF. Invited review: Changes in the dairy industry affecting dairy cattle health and welfare. Journal of Dairy Science. 98: 7426-7445. PMID 26342982 DOI: 10.3168/Jds.2015-9377  0.474
2015 Nekouei OA, Sanchez J, Keefe GP. Carryover of bovine leukemia virus antibodies in samples from shared milk meters. Journal of Dairy Science. PMID 26004835 DOI: 10.3168/jds.2014-9036  0.379
2015 Podder MP, Banfield SE, Keefe GP, Whitney HG, Tahlan K. Typing of Mycobacterium avium subspecies paratuberculosis isolates from Newfoundland using fragment analysis. Plos One. 10: e0126071. PMID 25927612 DOI: 10.1371/Journal.Pone.0126071  0.344
2015 Nekouei O, VanLeeuwen J, Sanchez J, Kelton D, Tiwari A, Keefe G. Herd-level risk factors for infection with bovine leukemia virus in Canadian dairy herds. Preventive Veterinary Medicine. 119: 105-13. PMID 25818520 DOI: 10.1016/J.Prevetmed.2015.02.025  0.427
2015 Ahlstrom C, Barkema HW, Stevenson K, Zadoks RN, Biek R, Kao R, Trewby H, Haupstein D, Kelton DF, Fecteau G, Labrecque O, Keefe GP, McKenna SL, De Buck J. Limitations of variable number of tandem repeat typing identified through whole genome sequencing of Mycobacterium avium subsp. paratuberculosis on a national and herd level. Bmc Genomics. 16: 161. PMID 25765045 DOI: 10.1186/S12864-015-1387-6  0.527
2015 Lavers CJ, Dohoo IR, McKenna SL, Keefe GP. 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. Journal of the American Veterinary Medical Association. 246: 236-44. PMID 25554941 DOI: 10.2460/Javma.246.2.236  0.709
2015 Laurin EL, Chaffer M, McClure JT, McKenna SL, Keefe GP. The association of detection method, season, and lactation stage on identification of fecal shedding in Mycobacterium avium ssp. paratuberculosis infectious dairy cows. Journal of Dairy Science. 98: 211-20. PMID 25465628 DOI: 10.3168/Jds.2014-8406  0.503
2015 Cameron M, Keefe GP, Roy JP, Stryhn H, Dohoo IR, McKenna SL. Evaluation of selective dry cow treatment following on-farm culture: Milk yield and somatic cell count in the subsequent lactation Journal of Dairy Science. 98: 2427-2436. DOI: 10.3168/jds.2014-8876  0.34
2014 Podder MP, Rogers L, Daley PK, Keefe GP, Whitney HG, Tahlan K. Klebsiella species associated with bovine mastitis in Newfoundland. Plos One. 9: e106518. PMID 25180510 DOI: 10.1371/Journal.Pone.0106518  0.337
2014 Lavers CJ, Barkema HW, Dohoo IR, McKenna SL, Keefe GP. Evaluation of milk ELISA for detection of Mycobacterium avium subspecies paratuberculosis in dairy herds and association with within-herd prevalence. Journal of Dairy Science. 97: 299-309. PMID 24239088 DOI: 10.3168/Jds.2013-7101  0.721
2014 Cameron M, McKenna SL, MacDonald KA, Dohoo IR, Roy JP, Keefe GP. Evaluation of selective dry cow treatment following on-farm culture: risk of postcalving intramammary infection and clinical mastitis in the subsequent lactation. Journal of Dairy Science. 97: 270-84. PMID 24183691 DOI: 10.3168/Jds.2013-7060  0.611
2013 Lavers CJ, McKenna SL, Dohoo IR, Barkema HW, Keefe GP. Evaluation of environmental fecal culture for Mycobacterium avium subspecies paratuberculosis detection in dairy herds and association with apparent within-herd prevalence. The Canadian Veterinary Journal. La Revue VéTéRinaire Canadienne. 54: 1053-60. PMID 24179240  0.712
2013 Cameron M, Keefe GP, Roy JP, Dohoo IR, MacDonald KA, McKenna SL. Evaluation of a 3M Petrifilm on-farm culture system for the detection of intramammary infection at the end of lactation. Preventive Veterinary Medicine. 111: 1-9. PMID 23597619 DOI: 10.1016/j.prevetmed.2013.03.006  0.657
2012 Saini V, McClure JT, Léger D, Keefe GP, Scholl DT, Morck DW, Barkema HW. Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farms. Journal of Dairy Science. 95: 4319-32. PMID 22818446 DOI: 10.3168/Jds.2012-5373  0.426
2012 Ceballos-Márquez A, Barkema HW, Stryhn H, Dohoo IR, Keefe GP, Wichtel JJ. Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herds. The Canadian Veterinary Journal. La Revue VéTéRinaire Canadienne. 53: 51-6. PMID 22753963  0.535
2012 Reyher KK, Dohoo IR, Scholl DT, Keefe GP. Evaluation of minor pathogen intramammary infection, susceptibility parameters, and somatic cell counts on the development of new intramammary infections with major mastitis pathogens. Journal of Dairy Science. 95: 3766-80. PMID 22720933 DOI: 10.3168/Jds.2011-5148  0.315
2012 Keefe G. Update on control of Staphylococcus aureus and Streptococcus agalactiae for management of mastitis. Veterinary Clinics of North America-Food Animal Practice. 28: 203-216. PMID 22664203 DOI: 10.1016/J.Cvfa.2012.03.010  0.397
2012 Roy JP, Keefe G. Systematic review: what is the best antibiotic treatment for Staphylococcus aureus intramammary infection of lactating cows in North America? The Veterinary Clinics of North America. Food Animal Practice. 28: 39-50, viii. PMID 22374116 DOI: 10.1016/J.Cvfa.2011.12.004  0.327
2011 Reyher KK, Dufour S, Barkema HW, Des Côteaux L, Devries TJ, Dohoo IR, Keefe GP, Roy JP, Scholl DT. The National Cohort of Dairy Farms--a data collection platform for mastitis research in Canada. Journal of Dairy Science. 94: 1616-26. PMID 21338829 DOI: 10.3168/Jds.2010-3180  0.516
2010 Ceballos-Marquez A, Barkema HW, Stryhn H, Dohoo IR, Keefe GP, Wichtel JJ. Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herds Journal of Dairy Science. 93: 4700-4709. PMID 20855004 DOI: 10.3168/Jds.2010-3313  0.508
2010 Elmoslemany AM, Keefe GP, Dohoo IR, Wichtel JJ, Stryhn H, Dingwell RT. The association between bulk tank milk analysis for raw milk quality and on-farm management practices Preventive Veterinary Medicine. 95: 32-40. PMID 20381889 DOI: 10.1016/J.Prevetmed.2010.03.007  0.314
2010 VanLeeuwen JA, Haddad JP, Dohoo IR, Keefe GP, Tiwari A, Scott HM. Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herds Preventive Veterinary Medicine. 93: 129-138. PMID 20018395 DOI: 10.1016/J.Prevetmed.2009.11.013  0.337
2009 McCarron JL, Keefe GP, McKenna SL, Dohoo IR, Poole DE. 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 Journal of Dairy Science. 92: 5326-5333. PMID 19762850 DOI: 10.3168/Jds.2009-2333  0.308
2009 McCarron JL, Keefe GP, McKenna SLB, Dohoo IR, Poole DE. Laboratory evaluation of 3M petrifilms and University of Minnesota Bi-plates as potential on-farm tests for clinical mastitis Journal of Dairy Science. 92: 2297-2305. PMID 19389988 DOI: 10.3168/Jds.2008-1661  0.312
2009 Tiwari A, VanLeeuwen JA, Dohoo IR, Keefe GP, Haddad JP, Scott HM, Whiting T. Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herds Preventive Veterinary Medicine. 88: 32-41. PMID 18692926 DOI: 10.1016/J.Prevetmed.2008.06.019  0.323
2008 Arunvipas P, VanLeeuwen JA, Dohoo IR, Keefe GP, Burton SA, Lissemore KD. Relationships among milk urea-nitrogen, dietary parameters, and fecal nitrogen in commercial dairy herds Canadian Journal of Veterinary Research. 72: 449-453. PMID 19086379  0.316
2008 Martinson SA, Hanna PE, Ikede BO, Lewis JP, Miller LM, Keefe GP, McKenna SL. Comparison of bacterial culture, histopathology, and immunohistochemistry for the diagnosis of Johne's disease in culled dairy cows. Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc. 20: 51-7. PMID 18182508 DOI: 10.1177/104063870802000109  0.41
2007 Tiwari A, VanLeeuwen JA, Dohoo IR, Keefe GP, Haddad JP, Tremblay R, Scott HM, Whiting T. Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosis Journal of Dairy Science. 90: 659-669. PMID 17235141 DOI: 10.3168/Jds.S0022-0302(07)71548-5  0.316
2006 McKenna SLB, Keefe GP, Tiwari A, VanLeeuwen J, Barkema HW. Johne's disease in Canada Part II: Disease impacts, risk factors, and control programs for dairy producers | Maladie de Johne au Canada, partie II: Impacts de la maladie, facteurs de risques et programme de contrôle pour les producteurs laitiers Canadian Veterinary Journal. 47: 1089-1099. PMID 17147140  0.455
2006 Tiwari A, VanLeeuwen JA, McKenna SLB, Keefe GP, Barkema HW. Johne's disease in Canada Part I: Clinical symptoms, pathophysiology, diagnosis, and prevalence in dairy herds Canadian Veterinary Journal. 47: 874-882. PMID 17017652  0.458
2006 Sanford CJ, Keefe GP, Sanchez J, Dingwell RT, Barkema HW, Leslie KE, Dohoo IR. Test characteristics from latent-class models of the California Mastitis Test Preventive Veterinary Medicine. 77: 96-108. PMID 16876270 DOI: 10.1016/J.Prevetmed.2006.06.006  0.545
2006 Sanford CJ, Keefe GP, Dohoo IR, Leslie KE. Assessment of antimicrobial transfer from treated to untreated mammary gland quarters by use of high-pressure liquid chromatography for detection of cloxacillin in milk samples from nonlactating dairy cows. American Journal of Veterinary Research. 67: 1140-4. PMID 16817734 DOI: 10.2460/Ajvr.67.7.1140  0.35
2006 Olde Riekerink RG, Barkema HW, Veenstra S, Poole DE, Dingwell RT, Keefe GP. Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island. The Canadian Veterinary Journal. La Revue VéTéRinaire Canadienne. 47: 567-72. PMID 16808229  0.563
2006 Sanford CJ, Keefe GP, Dohoo IR, Leslie KE, Dingwell RT, DesCôteaux L, Barkema HW. Efficacy of using an internal teat sealer to prevent new intramammary infections in nonlactating dairy cattle. Journal of the American Veterinary Medical Association. 228: 1565-73. PMID 16677128 DOI: 10.2460/Javma.228.10.1565  0.47
2006 McKenna SLB, Barkema HW, Keefe GP, Sockett DC. Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattle Veterinary Microbiology. 114: 285-291. PMID 16442752 DOI: 10.1016/J.Vetmic.2005.12.002  0.548
2005 Gonzalez M, Barkema HW, Keefe GP. Monensin toxicosis in a dairy herd. The Canadian Veterinary Journal. La Revue VéTéRinaire Canadienne. 46: 910-2. PMID 16454383  0.452
2005 McKenna SL, Sockett DC, Keefe GP, McClure J, VanLeeuwen JA, Barkema HW. 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. 17: 463-6. PMID 16312239 DOI: 10.1177/104063870501700510  0.499
2005 McKenna SLB, Keefe GP, Barkema HW, Sockett DC. Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standards Veterinary Microbiology. 110: 105-111. PMID 16125880 DOI: 10.1016/J.Vetmic.2005.07.010  0.51
2005 Sithole F, Dohoo I, Markham F, Sanchez J, Stryhn H, Keefe G. Evaluation of the stability of Ostertagia ostertagi ELISA microtitre plates over time using cow milk samples. Veterinary Parasitology. 133: 329-37. PMID 16029930 DOI: 10.1016/J.Vetpar.2005.06.001  0.379
2005 Tiwari A, VanLeeuwen JA, Dohoo IR, Stryhn H, Keefe GP, Haddad JP. 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 Veterinary Microbiology. 109: 147-158. PMID 15970402 DOI: 10.1016/J.Vetmic.2005.05.011  0.453
2005 Sanchez J, Dohoo I, Leslie K, Keefe G, Markham F, Sithole F. The use of an indirect Ostertagia ostertagi ELISA to predict milk production response after anthelmintic treatment in confined and semi-confined dairy herds. Veterinary Parasitology. 130: 115-24. PMID 15893078 DOI: 10.1016/J.Vetpar.2005.03.013  0.406
2004 McKenna SL, Keefe GP, Barkema HW, McClure J, Vanleeuwen JA, Hanna P, Sockett DC. Cow-level prevalence of paratuberculosis in culled dairy cows in Atlantic Canada and Maine. Journal of Dairy Science. 87: 3770-7. PMID 15483160 DOI: 10.3168/Jds.S0022-0302(04)73515-8  0.57
2004 Hariharan H, Donachie W, Macaldowie C, Keefe G. Bacteriology and somatic cell counts in milk samples from ewes on a Scottish farm. Canadian Journal of Veterinary Research = Revue Canadienne De Recherche Veterinaire. 68: 188-92. PMID 15352543  0.311
2004 Arunvipas P, VanLeeuwen JA, Dohoo IR, Keefe GP. Bulk tank milk urea nitrogen: Seasonal patterns and relationship to individual cow milk urea nitrogen values Canadian Journal of Veterinary Research. 68: 169-174. PMID 15352540  0.303
2004 Sanchez J, Markham F, Dohoo I, Sheppard J, Keefe G, Leslie K. Milk antibodies against Ostertagia ostertagi: relationships with milk IgG and production parameters in lactating dairy cattle. Veterinary Parasitology. 120: 319-30. PMID 15063942 DOI: 10.1016/J.Vetpar.2004.01.010  0.309
2003 Arunvipas P, Dohoo IR, VanLeeuwen JA, Keefe GP. The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, Canada Preventive Veterinary Medicine. 59: 83-93. PMID 12719019 DOI: 10.1016/S0167-5877(03)00061-8  0.317
2002 Sanchez J, Dohoo I, Nødtvedt A, Keefe G, Markham F, Leslie K, DesCôteaux L, Campbell J. A longitudinal study of gastrointestinal parasites in Canadian dairy farms. The value of an indirect Ostertagia ostertagi ELISA as a monitoring tool. Veterinary Parasitology. 107: 209-26. PMID 12127251 DOI: 10.1016/S0304-4017(02)00158-9  0.449
2002 Nødtvedt A, Dohoo I, Sanchez J, Conboy G, DesCôteaux L, Keefe G. Increase in milk yield following eprinomectin treatment at calving in pastured dairy cattle. Veterinary Parasitology. 105: 191-206. PMID 11934459 DOI: 10.1016/S0304-4017(02)00024-9  0.405
1997 Keefe GP. Streptococcus agalactiae mastitis: A review Canadian Veterinary Journal. 38: 429-437. PMID 9220132  0.304
1997 Keefe GP, Dohoo IR, Spangler E. Herd Prevalence and Incidence of Streptococcus agalactiae in the Dairy Industry of Prince Edward Island Journal of Dairy Science. 80: 464-470. PMID 9098795 DOI: 10.3168/Jds.S0022-0302(97)75958-7  0.326
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