Update on control of Staphylococcus aureus and Streptococcus agalactiae for management of mastitis Keefe, Greg
Systematic review Roy, Jean-Philippe; Keefe, Greg
Evaluation of monensin controlled relapse capsules in cattle challenged with E. bovis and E. zuernii J. Keefe, Gregory P.; Leslie, K. E.; Bagg, R.; Bateman, K. G.; Leblanc, S.; Dick, P.
Efficacy of intramammary tilmicosin and risk factors for cure of Staphylococcus aureus infection in the dry period Dingwell, R. T.; Leslie, K. E.; Duffield, T. F.; Schukken, Y. H.; DesCoteaux, L.; Keefe, Gregory P.; Kelton, D. F.; Lissemore, K. D.; Shewfelt, W.; Dick, P.; Bagg, R.
Monensin toxicosis in a dairy herd Gonzalez, M.; Barkema, H. W.; Keefe, Gregory P.
A consumer acceptance of fluid milk after raw milk selection using bulk tank bacteriologic and somatic cell count criteria Keefe, Gregory P.; Elmoslemany, A.
Decision-making in clinical mastitis therapy programmes Leslie, K. E.; Keefe, Gregory P.
Association of cow and quarter-level factors at drying-off with new intramammary infections during the dry period Dingwell, R. T.; Leslie, K. E.; Schukken, Y. H.; Sargeant, J. M.; Timms, L. L.; Duffield, T. F.; Keefe, Gregory P.; Kelton, D. F.; Lissemore, K. D.; Conklin, J.
Use of Pirlimycin in a Streptococcus agalactiae eradication protocol Keefe, Gregory P.
Monitoring mastitis pathogen patterns in a dairy herd using the hymast culture system Ivany, J.; Macrea, L.; Steeves, J.; Keefe, Gregory P.
Comparative efficacy of a novel intramammary dry cow antibiotic to eliminate subclinical mastitis in the dry period Dingwell, R. T.; Duffield, T. F.; Leslie, K. E.; Keefe, Gregory P.; DesCoteaux, L.; Dick, P.; Bagg, R.
Bacteriology and somatic cell counts in milk samples from ewes on a Scottish farm Hariharan, H.; Donachie, W.; Macaldowie, C.; Keefe, Gregory P.
Decision-making in clinical mastitis therapy programmes Leslie, K.; Keefe, Gregory P.
Johne's disease in Canada Keefe, Gregory P.
Factors associated with cure of subclinical Staphylococcus aureus mastitis during lactation Barkema, H. W.; Dingwell, R. T.; Keefe, Gregory P.; Sampimon, O. C.; Sol, J.
Prepartum monensin for the reduction of energy associated disease in postpartum dairy cows Duffield, T.; Bagg, R.; DesCoteaux, L.; Bouchard, E.; Brodeur, M.; DuTremblay, D.; Keefe, Gregory P.; LeBlanc, S.; Dick, P.
Lipolytic and proteolytic activity of organisms surviving pasteurization Elmoslemany, A.; Jarayao, B.; Keefe, Gregory P.
Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island Olde Riekerink, R. G.; Barkema, H. W.; Veenstra, S.; Poole, D. E.; Dingwell, R. T.; Keefe, Gregory P.
The efficacy of intramammary tilmicosin at drying-off, and other risk factors for the prevention of new intramammary infections during the dry period Dingwell, R. T.; Duffield, T. F.; Leslie, K. E.; Keefe, Gregory P.; DesCoteaux, L.; Kelton, D. F.; Lissemore, K. D.; Schukken, Y. H.; Dick, P.; Bagg, R.
Impact of a progesterone-releasing intravaginal device on plasma progesterone levels in lactating dairy cattle Keefe, Gregory P.; Squires, E. J.; Walsh, R.; Wilson, J. B.; Leslie, K. E.
Streptococcus agalactiae mastitis Keefe, Gregory P.
The effect of treatment of clinical endometritis on reproductive performance in dairy cows LeBlanc, S. J.; Duffield, T. F.; Leslie, K. E.; Bateman, K. G.; Keefe, Gregory P.; Walton, J. S.; Johnson, W. H.
Implementation of recommended mastitis prevention management practices and the herd level prevalence of contagious mastitis pathogens on Canadian dairy farms Riekerink, R. G. M. O.; Barkema, H. W.; Scholl, D. T.; Kelton, D. F.; Keefe, Gregory P.
Defining and diagnosing postpartum clinical endometritis and its impact on reproductive performance in dairy cows LeBlanc, S. J.; Duffield, T. F.; Leslie, K. E.; Bateman, K. G.; Keefe, Gregory P.; Walton, J. S.; Johnson, W. H.
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 LeBlanc, S. J.; Leslie, K. E.; Ceelen, H. J.; Kelton, D. F.; Keefe, Gregory P.
Field trial of intra-uterine antibiotic or prostaglandin for treatment of clinical endometritis in dairy cows LeBlanc, S.; Leslie, K.; Duffield, T.; Bateman, K.; Keefe, Gregory P.
Efficacy of intramammary tilmicosin at drying-off, and other risk factors, for the prevention of new intramammary infections during the dry period Dingwell, R. T.; Duffield, T. F.; Leslie, K. E.; Keefe, Gregory P.; DesCoteaux, L.; Kelton, D. F.; Lissemore, K. D.; Schukken, Y. H.
Loss of milk and profits. / Pertes de lait et de profits MacDonald, K.; Keefe, G.; Christen, A. M.
Neospora caninum Keefe, Gregory P.; VanLeeuwen, John A.
Bulk tank milk urea nitrogen Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Seropositivity for agents causing neosporosis, bovine viral diarrhea, enzootic bovine leukemia, and Johne's Disease and their relationships with increased calving to conception interval in Canadian dairy cows Haddad, J. P.; Dohoo, Ian R.; VanLeeuwen, John A.; Tiwari, A.; Keefe, Gregory P.
Seroprevalence and spatial distribution of BLV, BVDV, MAP, and NC in Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Keefe, Gregory P.
Preliminary results of an observational study describing the relationship between MUN and pasture management in PEI dairy herds Leger, E.; Arunvipas, P.; Keefe, Gregory P.; VanLeeuwen, John A.; Dohoo, Ian R.
Efficacy of an Internal Teat Sealant, OrbeSeal*, for the reduction of clinical mastitis during the first sixty days post-partum. Sanford, C.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K.
Seroprevalence of infection with Mycobacterium avium subspecies paratuberculosis, bovine leukemia virus, and bovine viral diarrhea virus in maritime Canada dairy cattle VanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey
The effect of non-nutritional factors on milk urea nitrogen levels in Holstein dairy cows Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Prevalence of contagious mastitis pathogens in bulk tank milk from Prince Edward Island dairy farms Riekerink, R. G. M. O.; Barkema, H. W.; Veenstra, S.; Stryhn, Henrik E.; Poole, D. E.; Dingwell, R. T.; Keefe, Gregory P.
Effects of seropositivity for MAP on risk of culling in Maritime Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Herd prevalence and incidence of Streptococcus agalactiae mastitis in Prince Edward Island, Canada and evaluation of the effectiveness of an eradication extension program Keefe, Gregory P.; Dohoo, Ian R.
Comparison of Oro-rumenal probe and rumenocentesis for prediction of rumen pH in dairy cattle Keefe, Gregory P.; Ogilvie, Timothy H.
Associations between gastrointestinal parasite antibody levels, herd management practices and milk yield in Virginia dairy herds Keefe, Gregory P.; Sanchez, J.; Lawson, T. J.; Hovingh, E.; Dohoo, Ian R.
Evaluation of MUN levels on bulk tank milk and individual cow milk Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Seroprevalence, spacial distribution and productivity effects of infection with Johne's disease and bovine leukosis in Maritime Canadian dairy cattle VanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey
Sensivity and specificity of the California Mastitis Test to identify the presence of intramamary infections on the day of dry off. Sanford, C.; Keefe, Gregory P.; Leslie, K.; Dohoo, Ian R.; Barkema, H. W.
Seroprevalence, spatial distribution, & productivity effects of infection with BLV & MAP in Canadian dairy cattle VanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey
Evaluation of milk urea nitrogen levels on bulk tank milk and individual cow milk Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Evaluation of ultrasound exam at feedlot entry as a predictor of carcas grade at slaughter Keefe, Gregory P.; Dohoo, Ian R.; Valcour, J.; Milton, R.
Estimation of the prevalence and economic impact of domestic infectious diseases in Maritime dairy herds VanLeeuwen, John A.; Keefe, Gregory P.
Explaining variation in MUN Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Evaluating and ELISA for monitoring parasite burdens in dairy cattle Dohoo, Ian R.; Sanchez, J.; DesCoteaux, L.; Leslie, K.; Keefe, Gregory P.
A survey of demographics and information demands of dairy producers VanLeeuwen, John A.; Keefe, Gregory P.
Production losses and treatment costs from NC in Canadian dairy herds Dohoo, Ian R.; Haddad, J. P.; VanLeeuwen, John A.; Keefe, Gregory P.; Weersink, A.
Risk factors for seropositivity for NC in Canadian dairy cows Haddad, J. P.; Dohoo, Ian R.; VanLeeuwen, John A.; Keefe, Gregory P.; Scott, H. M.; Whiting, T.
Evaluation of extended therapy with pirlamycin hydrochloride for S. aureus mastitis Keefe, Gregory P.; VanLeeuwen, John A.; Wichtel, Jeffrey
The impact of administration of an internal teat sealant, OrbeSeal*, on the somatic cell counts and particle recovered in the first seven days post-calving Sanford, C.; Leslie, K.; Keefe, Gregory P.; Dohoo, Ian R.; Stryhn, Henrik E.; Bashiri, A.; Groves, B.
A national JD program for dairy cattle Keefe, Gregory P.; VanLeeuwen, John A.; Barkema, H. W.; Tiwari, A.; McKenna, Shawn L.
Neospora caninum in Maritime Canada Keefe, Gregory P.; VanLeeuwen, John A.
Efficacy of an internal teat sealant, orbeseal, for reduction of clinical mastitis during the first 60 days post-partum Sanford, C.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K.
The effect of non-nutritional factors on MUN levels in Ayrshire dairy cows Arunvipas, P.; Dohoo, Ian R.; VanLeeuwen, John A.; Leger, E.; Keefe, Gregory P.
Neosporosis in cattle - an update Keefe, Gregory P.; VanLeeuwen, John A.
Evaluation of the Svanovir ELISA for bovine leukosis, bovine viral diarrhea and M. paraturberculosis Keefe, Gregory P.; VanLeeuwen, John A.; Hotham, S.
Seroprevalence of production limiting diseases in the Maritimes--an update VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey
Herd seroprevalence of BVDV in Maritime dairies VanLeeuwen, John A.; Keefe, Gregory P.
Point estimation and variability in prevalence in herds with low disease prevalence using imperfect tests- M. paratuberculosis prevalence in the Netherlands, New York State, Eastern Canada Van Schaik, G.; Schukken, Y.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Relationship between bulk tank milk urea nitrogen and individual cow milk urea nitrogen Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
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 Sanford, C. J.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K. E.
Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosis Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
The effect of non-nutritional factors on milk urea nitrogen levels in Ayrshire cattle Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Herd prevalence and incidence of Streptococcus agalactiae in the dairy industry of Prince Edward Island Keefe, Gregory P.; Dohoo, Ian R.; Spangler, Elizabeth
Effect of freezing on somatic cell count of quarter milk samples using flow cytometry and flouro-opto-electronic methods Trenholm, M.; Keefe, Gregory P.; Dohoo, Ian R.
Evaluation of the reliability and repeatability of automated milk urea nitrogen testing Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Efficacy of using an internal teat sealer to prevent new intramammary infections in nonlactating dairy cattle Sanford, C. J.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K. E.; Dingwell, R. T.; DesCoteaux, L.; Barkema, H. W.
Clinical trial to determine the productivity impact of milk urea nitrogen reports Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Lissemore, K. D.
Descriptive and geographic analysis of a survey of drinking water quality on PEI dairy farms VanLeeuwen, John A.; Keefe, Gregory P.
NC Keefe, Gregory P.; VanLeeuwen, John A.
Evaluation of the Svanovir ELISA for bovine leukosis, bovine viral diarrhea and M. paratuberculosis Keefe, Gregory P.; VanLeeuwen, John A.; Hotham, S.
A survey of characteristics and management practices of PEI dairy producers VanLeeuwen, John A.; Keefe, Gregory P.
Estimate of the direct production losses in Canadian dairy herds with subclinical Mycobacterium avium subspecies paratuberculosis infection Tiwari, Ashwani; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Cow level prevalence of paratubercolosis in dairy cows in Atlantic Canada McKenna, Shawn L.; Barkema, Herman W.; Keefe, Gregory P.; VanLeeuwen, John A.; Sockett, D. C.
The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, Canada Arunvipas, P.; Dohoo, Ian R.; VanLeeuwen, John A.; Keefe, Gregory P.
NC in Maritime Canada Keefe, Gregory P.; VanLeeuwen, John A.
Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standards McKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.; Sockett, D. C.
Herd prevalence and incidence of Streptococcus agalactiae mastitis in Prince Edward Island, Canada Keefe, Gregory P.; Dohoo, Ian R.
Efficacy of an internal teat sealer used in conjunction with intramammary antibiotics on the cure of intramammary infections during the dry period Sanford, C. J.; Keefe, Gregory P.; Dohoo, Ian R.; Barkema, H. W.; Dingwell, R. T.; Leslie, K. E.
Relationship between bulk tank MUN and individual cow MUN values Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Estimation of the prevalence of verotoxigenic E. coli 0157 VanLeeuwen, John A.; Keefe, Gregory P.
Effects of BLV, BVDV, MAP, and NC on somatic cell count VanLeeuwen, John A.; Tiwari, A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
Seroprevalence and productivity effects of infection with bovine leukemia virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Maritime Canadian dairy cattle VanLeeuwen, John A.; Keefe, Gregory P.; Tiwari, A.
The impact of gastrointestinal nematodes in lactating cattle Nodtvedt, A.; Dohoo, Ian R.; Sanchez, J.; Conboy, Gary A.; Keefe, Gregory P.; DesCoteaux, L.; Leslie, K.; Campbell, J.
Productivity effects of infection with BLV, MAP, and NC in Maritime Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Keefe, Gregory P.
Economic impact of seropositivity of MAP in Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
Effects of seropositivity for Mycobacterium avium subspecies paptuberculosis on risk of culling in maritime Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Effects of seropositivity with BLV, MAP and NC on risk of culling in dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Water quality and ruminant health VanLeeuwen, John A.; Keefe, Gregory P.
Evaluation of the Svanovir ELISA for BLV, BVDV, & MAP Keefe, Gregory P.; VanLeeuwen, John A.; Hotham, S.
Oral melengestrol acetate treatment for out-of-season breeding in the sheep possessing an extended breeding season Wichtel, Jeffrey; Keefe, Gregory P.; Riley, Christopher B.
Herd prevalence and incidence of Streptococcus agalactiae in Prince Edward Island, Canada and evaluation of an eradication extension program Keefe, Gregory P.; Dohoo, Ian R.
Neospora then and now Keefe, Gregory P.; VanLeeuwen, John A.
JD - prevalence in the Maritime provinces VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey
Seroprevalence of paratuberculosis in the Maritimes VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey
Evaluation of the effect of cow and test day factors on MUN testing Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Factors contributing to nitrate contamination of well water on PEI dairy farms VanLeeuwen, John A.; Keefe, Gregory P.
The relationship between milk urea mitrogen and reproductive performance in dairy cattle Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Ultrasonic imaging of marbling at feedlot entry as a predictor of carcass quality grade Keefe, Gregory P.; Dohoo, Ian R.; Valcour, J. E.; Milton, R. L.
Use of an ELISA to monitor internal parasite burdens in dairy cows Guitian, J.; Keefe, Gregory P.; Dohoo, Ian R.
Risk factors of seropositivity for MAP in Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattle McKenna, Shawn L.; Barkema, H. W.; Keefe, Gregory P.; Sockett, D. C.
Efficacy of an internal teat sealant (OrbeSeal) for the prevention of new intramammary infections during the dry period Sanford, C.; Keefe, Gregory P.; Leslie, K.; Dohoo, Ian R.; Barkema, H. W.; Dingwell, R. T.; DesCoteaux, L.
The use of fecal egg counts and larval cultures as tools to monitor internal parasite burdens in Canadian dairy cattle Nodtvedt, A.; Dohoo, Ian R.; Sanchez, J.; Conboy, Gary A.; Keefe, Gregory P.; DesCoteaux, L.; Leslie, K.; Campbell, J.
Effects of BLV, BVDV, MAP, and NC on milk production VanLeeuwen, John A.; Tiwari, A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
Evaluation of melengestrol acetate and equine chorionic gonadotropin for out-of-season breeding in sheep on Prince Edward Island Keefe, Gregory P.; Wichtel, Jeffrey
Seroprevalence of production limiting diseases in Ontario and Maritime dairy cattle VanLeeuwen, John A.; Tremblay, R.; Keefe, Gregory P.; Wichtel, Jeffrey
Why be concerned about nitrate levels? Health issues, water quality guidelines and surface water concerns VanLeeuwen, John A.; Keefe, Gregory P.
The effect of MUN values on reproductive performance in dairy cattle Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
The effect of MUN values on reproductive performance in dairy cattle Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Microbiological quality of bulk tank raw milk in Prince Edward Island dairy herds Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Dingwell, R. T.
Effect of eprinomectin pour-on treatment around calving on reproduction parameters in adult dairy cows with limited outdoor exposure Sithole, F.; Dohoo, Ian R.; Leslie, K.; DesCoteaux, L.; Godden, S.; Campbell, J.; Keefe, Gregory P.; Sanchez, J.
The REFLECT statement O'Connor, A. M.; Sargeant, J. M.; Gardner, I. A.; Dickson, J. S.; Torrence, M. E.; Dewey, E.; Dohoo, I. R.; Evans, R. B.; Gray, J. T.; Greiner, M.; Keefe, G.; Lefebvre, S. L.; Morley, P. S.; Ramirez, A.; Sischo, W.; Smith, D. R.; Snedeker, K.; Sofos, J.; Ward, M. P.; Wills, R.
The REFLECT statement O'Connor, A. M.; Lefebvre, S. L.; Keefe, G.; Greiner, M.; Morley, P. S.; Smith, D. R.; Sischo, W.; Ramirez, A.; Gray, J. T.; Dickson, J. S.; Gardner, I. A.; Sargeant, J. M.; Torrence, M. E.; Evans, R. B.; Dohoo, I. R.; Dewey, C. E.
Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 1 Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Jayarao, B. M.
The reflect statement O’Connor, A. M.; Sargeant, J. M.; Gardner, I. A.; Dickson, J. S.; Torrence, M. E.; Dewey, C. E.; Dohoo, I. R.; Evans, R. B.; Gray, J. T.; Greiner, M.; Keefe, G.; Lefebvre, S. L.; Morley, P. S.; Ramirez, A.; Sischo, W.; Smith, D. R.; Snedeker, K.; Sofos, J.; Ward, M. P.; Wills, R.
Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herds VanLeeuwen, J. A.; Haddad, J. P.; Dohoo, I. R.; Keefe, G. P.; Tiwari, A.; Scott, H. M.
Associations between reproductive performance and seropositivity for bovine leukemia virus, bovine viral-diarrhea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Canadian dairy cows Vanleeuwen, J. A.; Haddad, J. P.; Dohoo, I. R.; Keefe, G. P.; Tiwari, A.; Tremblay, R.
Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 2 Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Jayarao, B. M.
The national cohort of dairy farms Reyher, K. K.; Dufour, S.; Barkema, H. W.; Des Côteaux, L.; DeVries, T. J.; Dohoo, I. R.; Keefe, G. P.; Roy, J. -P; Scholl, D. T.
Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herds Tiwari, A.; VanLeeuwen, J. A.; Dohoo, I. R.; Keefe, G. P.; Haddad, J. P.; Scott, H. M.; Whiting, T.
Johne's disease in Canada Part I Tiwari, A.; VanLeeuwen, John A.; McKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.
Johne's disease in Canada part II McKenna, Shawn L.; Keefe, Gregory P.; Tiwari, A.; VanLeeuwen, John A.; Barkema, H. W.
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 Chi, J.; VanLeeuwen, John A.; Weersink, A.; Keefe, Gregory P.
Direct production losses and treatment costs from bovine viral diarrhoea virus, bovine leukosis virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum Chi, J.; VanLeeuwen, John A.; Weersink, A.; Keefe, Gregory P.
Effects of seropositivity for BLV, MAP, and NC on milk production and risk of culling Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
Effects of seropositivity for BLV, MAP, and NC on calving to conception interval in Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Stryhn, Henrik E.; Keefe, Gregory P.
Observational study assessing the significance of nutritioinal and management factors associated with MUN levels during the non-grazing season Leger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A.
Observational study of factors associated with seasional variation in milk urea nitrogen observed on intensively and extensively managed pastures, during the summer 2000 grazing period in Prince Edward Island, Canada Leger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A.
Effect of milk urea nitrogen and nutrition on reproductive performance in commercial dairy herds in Prince Edward Island, Canada Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Burton, Shelley A.; Lissemore, K. D.; Leger, E.
Effects of seropositivity for BLV, MAP, and NC on milk production on 152 Canadian dairy farms Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Stryhn, Henrik E.; Keefe, Gregory P.; Tremblay, R.; Haddad, J. P.
Prevalence, spatial distribution, & management factors associated with seroprevalence for BLV in Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
Use of an ELISA against Ostertagia ostertagi to monitor parasite burdens in lactating dairy cattle Sanchez, J.; Dohoo, Ian R.; Guitian, J.; Nodtvedt, A.; Markham, R. J. Frederick; Keefe, Gregory P.; Descoteaux, L.; Leslie, K.; Campbell, J.; VanLeeuwen, John A.
Relationships between bulk-tank antibodies to Ostertagia ostertagi and herd-management practices and measures of milk production in Nova Scotia dairy herds Guitian, F. J.; Dohoo, Ian R.; Markham, R. J. Frederick; Conboy, Gary A.; Keefe, Gregory P.
Prevalence, spatial distribution, & management factors associated with seroprevalence for MAP in Canadian dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
The effect of MUN values and nutrition on reproductive performance in commercial dairy cattle Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Burton, Shelley A.; Lissemore, K. D.; Leger, E.
Relationships among MUN, dietary nutrients & fecal nitrogen loss on dairy farms Arunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Burton, Shelley A.; Lissemore, K. D.
Congenital dyserythropoiesis and dyskeratosis in a polled Hereford calf Burton, Shelley A.; Ikede, B. O.; Lofstedt, Jeanne; Keefe, Gregory P.; Miller, Lisa M.
Observational study of factors associated with seasonal variation in MUN observed on intensively managed pastures during the summer 2000 grazing season, in PEI, Canada Leger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A.
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 Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Stryhn, Henrik E.; Keefe, Gregory P.
Preliminary results of an observational study describing the relationship between milk urea nitrogen and pasture management in Prince Edward Island dairy herds Leger, E.; Arunvipas, P.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Wichtel, Jeffrey
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 Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Stryhn, Henrik E.; Keefe, Gregory P.; Haddad, J. P.
Effects of seropositivity for Bovine Leukemia Virus, Mycobacterium avium subspecies paratuberculosis and Neospora caninum on risk of culling in dairy cattle Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
Comparison of two enzyme-linked immunosorbent assays for diagnosis of Mycobacterium avium subsp. paratuberculosis McKenna, Shawn L.; Sockett, D. C.; Keefe, Gregory P.; McClure, J. Trenton; VanLeeuwen, John A.; Barkema, H. W.
Culling risk of infection with BLV, MAP & NC Tiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
Effects of seropositivity for BLV, MAP, and NC on calving to conception interval in Maritime Canadian dairy cattle Haddad, J. P.; Dohoo, Ian R.; VanLeeuwen, John A.; Tiwari, A.; Stryhn, Henrik E.; Keefe, Gregory P.
Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herds Ceballos-Marquez, Alejandro; Barkema, Herman W.; Stryhn, Henrik; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey J.
The use of an indirect Ostertagia ostertagi ELISA to predict milk production response after anthelmintic treatment in confined and semi-confined dairy herds Sanchez, J.; Dohoo, Ian R.; Leslie, K.; Keefe, Gregory P.; Markham, R. J. Frederick; Sithole, F.
Milk antibodies against Ostertagia ostertagi Sanchez, J.; Markham, R. J. Frederick; Dohoo, Ian R.; Sheppard, J.; Keefe, Gregory P.; Leslie, K.
The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cows Nodtvedt, A.; Dohoo, Ian R.; Sanchez, J.; Conboy, Gary A.; DesCjteaux, L.; Keefe, Gregory P.; Leslie, K.; Campbell, J.
A longitudinal study of gastrointestinal parasites in Canadian dairy farms: Sanchez, J.; Dohoo, Ian R.; Nodtvedt, A.; Keefe, Gregory P.; Markham, R. J. Frederick; Leslie, K.; DesCoteaux, L.; Campbell, J.
Increase in milk yield following eprinomectin treatment at calving in pastured dairy cattle Nodtvedt, A.; Dohoo, Ian R.; Sanchez, J.; Conboy, Gary A.; DesCoteaux, L.; Keefe, Gregory P.
Test characteristics from latent-class models of the California Mastitis Test Sanford, C. J.; Keefe, Gregory P.; Sanchez, J.; Dingwell, R. T.; Barkema, H. W.; Leslie, K. E.; Dohoo, Ian R.
The REFLECT statement , ; Connor, A. M.; Sargeant, J. M.; Gardner, I. A.; Dickson, J. S.; Torrence, M. E.
The association between bulk tank milk analysis for raw milk quality and on-farm management practices Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Wichtel, J. J.; Stryhn, H.; Dingwell, R. T.
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 McCarron, J. L.; Keefe, G. P.; McKenna, S. L.; Dohoo, I. R.; Poole, D. E.
Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herds Ceballos-Marquez, A.; Barkema, H. W.; Stryhn, H.; Dohoo, I. R.; Keefe, G. P.; Wichtel, J. J.
Laboratory evaluation of 3M Petrifilms and University of Minnesota Bi-plates as potential on-farm tests for clinical mastitis McCarron, J. L.; Keefe, G. P.; McKenna, S. L. B.; Dohoo, I. R.; Poole, D. E.
The economics of controlling infectious diseases on dairy farms , ; Weersink, A.; VanLeeuwen, John A.; Keefe, Gregory P.
Risk factors for milk off-flavours in dairy herds from Prince Edward Island, Canada Mounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; Halliday, L. J.
Predicting the effect of anthelmintic treatment on milk production of dairy cattle in Canada using an Ostertagia ostertagi ELISA from individual milk samples Vanderstichel, Raphaël ; Dohoo, Ian ; Sanchez, Javier ; Sithole, Fortune ; Keefe, Gregory ; Stryhn, Henrik
Prevalence of infectious diseases in Maritime dairy cattle VanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey; Ogilvie, Timothy H.; Spangler, Elizabeth
Cow-level prevalence of paratuberculosis in culled dairy cows in Atlantic Canada and Maine McKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.; McClure, J. Trenton; VanLeeuwen, John A.; Hanna, Paul E.; Sockett, D. C.
Test evaluation of three ELISA's for detection of antibodies to MAP. McKenna, Shawn L.; Keefe, Gregory P.; Sockett, D.; VanLeeuwen, John A.; Hanna, Paul E.; McClure, J. Trenton; Barkema, H. W.
Off-flavours in bulk milk in Prince Edward Island dairy farms Mounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Halliday, L. J.
Comparison of bacterial culture, histopathology, and immunohistochemistry for the diagnosis of Johne's disease in culled dairy cows Martinson, S. A.; Hanna, P. E.; Ikede, B. O.; Lewis, J. P.; Miller, L. M.; Keefe, G. P.; McKenna, S. L.
Evaluation of the stability of Ostertagia ostertagi ELISA microtitre plates over time using cow milk samples Sithole, F.; Dohoo, Ian R.; Markham, R. J. Frederick; Sanchez, J.; Stryhn, Henrik E.; Keefe, Gregory P.
The PEI Milk Off-flavours Project 2001-2004. For the Dairy Farmers of PEI, April 2005 Wichtel, Jeffrey; Mounchili, Aboubakar; Halliday, L. J.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.; Gao, Lingjuan; McNiven, Mary A.; Sampson, R.
Evaluation of the sensitivity of three ELISA tests for the detection of Mycobacterium avium paratuberculosis infection using tissue culture as a gold standard McKenna, Shawn L.; Keefe, Gregory P.; Sockett, D. C.; VanLeeuwen, John A.; McClure, J. Trenton; Hanna, Paul E.; Spangler, Elizabeth; Barkema, H. W.
Transmitted flavours in milk in PEI dairy herds Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, L.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.
Sensory evaluation and factors associated with transmitted flavours in milk in PEI dairy herds Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, L.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.
Transmitted flavours in milk in PEI dairy herds Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, L.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.
The selenium status of lactating cows in Prince Edward Island Wichtel, Jeffrey; VanLeeuwen, John A.; Keefe, Gregory P.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
The selenium status of dairy herds in Prince Edward Island Wichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
The Selenium Status of Dairy Herds in Prince Edward Island. Wichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
Factors associated with off-flavors in milk from PEI dairy herds Mounchili, Aboubakar; Wichtel, Jeffrey; Halliday, A.; Sampson, R.; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.
Relationships among milk urea-nitrogen, dietary parameters, and fecal nitrogen in commercial dairy herds Arunvipas, Pipat; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Greg P.; Burton, Shelley A.; Lissemore, Kerry D.
A slaughterhouse study on the cow-level prevalence of paratuberculosis in dairy cow in Atlantic Canada McKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.; VanLeeuwen, John A.; Hanna, Paul E.; McClure, J. Trenton; Spangler, Elizabeth; Sockett, D.
Selenium in dairy cows in PEI Wichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
Off-flavours in unpasteurized milk in PEI dairy herds Mounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; VanLeeuwen, John A.; Gottschall-Pass, Katherine T.; Halliday, L.; Sampson, R.
Milk urea-nitrogen negatively affected first-service breeding success in commercial dairy cows in Prince Edward Island, Canada Arunvipas, P.; VanLeeuwen, J. A.; Dohoo, I. R.; Leger, E. R.; Keefe, G. P.; Burton, A. S.; Lissemore, K. D.
The economics of controlling infectious diseases on dairy farms , ; Weersink, A.; VanLeeuwen, John A.; Keefe, Gregory P.
Evaluation of minor pathogen intramammary infection, susceptibility parameters, and somatic cell counts on the development of new intramammary infections with major mastitis pathogens , ; , ; , ; ,
Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farms Saini, V.; , ; Léger, D.; , ; , ; , ; ,
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