Gregory Keefe

Description

Details

NameGregory Keefe
PositionFaculty Member
Emailgkeefe@upei.ca
Department(s)Health Management
Phone(902) 566-0968
BuildingAVC 325N
Websitehttp://healthmgt.upei.ca/keefe

Research Interests

  • Milk Quality and Mastitis
  • Dairy Production Medicine
  • Infectious disease epidemiology
  • Johne's Disease

Grants

Integrated milk quality research and service for enhanced competitiveness in the regional dairy-food sector. - Maritime Quality Milk (ACOA Project 189267) ORD# 1000624
  • Atlantic Innovation Fund
  • Atlantic Canada Opportunities Agency
Research Contract Agreement between Milk 2020 and The University of Prince Edward Island
  • Research Agreement
  • Milk 2020
Understanding and controlling variability in bulk milk iodine in Canada.
  • Granting Program
  • Canadian Bovine Mastitis Research Network

Other Scholars in Health Management

Citations

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TitleAuthor(s)
Systematic reviewRoy, Jean-Philippe; Keefe, Greg
Update on control of Staphylococcus aureus and Streptococcus agalactiae for management of mastitisKeefe, Greg
Measures of estrus detection and pregnancy in dairy cows after administration of gonadotropin-releasing hormone within an estrus synchronization program based on prostaglandin F2 alphaLeBlanc, 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 cowsLeBlanc, 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 periodDingwell, R. T.; Duffield, T. F.; Leslie, K. E.; Keefe, Gregory P.; DesCoteaux, L.; Kelton, D. F.; Lissemore, K. D.; Schukken, Y. H.
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 periodDingwell, 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 herdGonzalez, 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 criteriaKeefe, Gregory P.; Elmoslemany, A.
Decision making in clinical mastitis therapy programmesLeslie, K. E.; Keefe, Gregory P.
Association of cow and quarter-level factors at drying-off with new intramammary infections during the dry periodDingwell, 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.
Monitoring mastitis pathogen patterns in a dairy herd using the hymast culture systemIvany, J.; Macrea, L.; Steeves, J.; Keefe, Gregory P.
Use of Pirlimycin in a Streptococcus agalactiae eradication protocolKeefe, Gregory P.
Comparative efficacy of a novel intramammary dry cow antibiotic to eliminate subclinical mastitis in the dry periodDingwell, 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 farmHariharan, H.; Donachie, W.; Macaldowie, C.; Keefe, Gregory P.
Decision-making in clinical mastitis therapy programmesLeslie, K.; Keefe, Gregory P.
Loss of milk and profits. / Pertes de lait et de profitsMacDonald, K.; Keefe, G.; Christen, A. M.
Johne's disease in CanadaKeefe, Gregory P.
Factors associated with cure of subclinical Staphylococcus aureus mastitis during lactationBarkema, 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 cowsDuffield, 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 pasteurizationElmoslemany, A.; Jarayao, B.; Keefe, Gregory P.
Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward IslandOlde 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 periodDingwell, 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 cattleKeefe, Gregory P.; Squires, E. J.; Walsh, R.; Wilson, J. B.; Leslie, K. E.
Streptococcus agalactiae mastitisKeefe, Gregory P.
The effect of treatment of clinical endometritis on reproductive performance in dairy cowsLeBlanc, 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 farmsRiekerink, 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 cowsLeBlanc, S. J.; Duffield, T. F.; Leslie, K. E.; Bateman, K. G.; Keefe, Gregory P.; Walton, J. S.; Johnson, W. H.
Evaluation of minor pathogen intramammary infection, susceptibility parameters, and somatic cell counts on the development of new intramammary infections with major mastitis pathogens, ; Reyher, K.K. ; Dohoo, I.R. ; Scholl, D.T. ; Keefe, G.P.
Evaluation of a 3M Petrifilm on-farm culture system for the detection of intramammary infection at the end of lactationCameron, M. ; Keefe, G.P. ; Roy, J.P. ; Dohoo, I.R. ; MacDonald, K.A. ; McKenna, S.L.
Herd- and cow-level risk factors associated with subclinical mastitis in dairy farms from the High Plains of the northern Antioquia, ColombiaRamírez, N.F. ; Keefe, G. ; Dohoo, I. ; Sánchez, J. ; Arroyave, O. ; Cerón, J. ; Jaramillo, M. ; Palacio, L.G.
Neospora caninumKeefe, Gregory P.; VanLeeuwen, John A.
Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herdsVanLeeuwen, J. A.; Haddad, J. P.; Dohoo, I. R.; Keefe, G. P.; Tiwari, A.; Scott, H. M.
Bulk tank milk urea nitrogenArunvipas, 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 cowsHaddad, J. P.; Dohoo, Ian R.; VanLeeuwen, John A.; Tiwari, A.; Keefe, Gregory P.
Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattleMcKenna, Shawn L.; Barkema, H. W.; Keefe, Gregory P.; Sockett, D. C.
Risk factors of seropositivity for MAP in Canadian dairy cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
Efficacy of an internal teat sealant (OrbeSeal) for the prevention of new intramammary infections during the dry periodSanford, 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 cattleNodtvedt, 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 productionVanLeeuwen, 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 IslandKeefe, Gregory P.; Wichtel, Jeffrey
Seroprevalence of production limiting diseases in Ontario and Maritime dairy cattleVanLeeuwen, John A.; Tremblay, R.; Keefe, Gregory P.; Wichtel, Jeffrey
Why be concerned about nitrate levels? Health issues, water quality guidelines and surface water concernsVanLeeuwen, John A.; Keefe, Gregory P.
Seroprevalence of infection with Mycobacterium avium subspecies paratuberculosis, bovine leukemia virus, and bovine viral diarrhea virus in maritime Canada dairy cattleVanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey
Preliminary results of an observational study describing the relationship between MUN and pasture management in PEI dairy herdsLeger, 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 and spatial distribution of BLV, BVDV, MAP, and NC in Canadian dairy cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Keefe, Gregory P.
The effect of non-nutritional factors on milk urea nitrogen levels in Holstein dairy cowsArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Effects of seropositivity for MAP on risk of culling in Maritime Canadian dairy cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Prevalence of contagious mastitis pathogens in bulk tank milk from Prince Edward Island dairy farmsRiekerink, R. G. M. O.; Barkema, H. W.; Veenstra, S.; Stryhn, Henrik E.; Poole, D. E.; Dingwell, R. T.; Keefe, Gregory P.
The REFLECT statementO'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.
Comparison of Oro-rumenal probe and rumenocentesis for prediction of rumen pH in dairy cattleKeefe, Gregory P.; Ogilvie, Timothy H.
Herd prevalence and incidence of Streptococcus agalactiae mastitis in Prince Edward Island, Canada and evaluation of the effectiveness of an eradication extension programKeefe, Gregory P.; Dohoo, Ian R.
Associations between gastrointestinal parasite antibody levels, herd management practices and milk yield in Virginia dairy herdsKeefe, Gregory P.; Sanchez, J.; Lawson, T. J.; Hovingh, E.; Dohoo, Ian R.
Evaluation of MUN levels on bulk tank milk and individual cow milkArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
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, spacial distribution and productivity effects of infection with Johne's disease and bovine leukosis in Maritime Canadian dairy cattleVanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey
Seroprevalence, spatial distribution, & productivity effects of infection with BLV & MAP in Canadian dairy cattleVanLeeuwen, John A.; Keefe, Gregory P.; Tremblay, R.; Power, C.; Wichtel, Jeffrey
Evaluation of ultrasound exam at feedlot entry as a predictor of carcas grade at slaughterKeefe, Gregory P.; Dohoo, Ian R.; Valcour, J.; Milton, R.
Evaluation of milk urea nitrogen levels on bulk tank milk and individual cow milkArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Estimation of the prevalence and economic impact of domestic infectious diseases in Maritime dairy herdsVanLeeuwen, John A.; Keefe, Gregory P.
Explaining variation in MUNArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Johne's disease in Canada part ITiwari, A.; VanLeeuwen, John A.; McKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.
Evaluating and ELISA for monitoring parasite burdens in dairy cattleDohoo, Ian R.; Sanchez, J.; DesCoteaux, L.; Leslie, K.; Keefe, Gregory P.
A survey of demographics and information demands of dairy producersVanLeeuwen, John A.; Keefe, Gregory P.
Production losses and treatment costs from NC in Canadian dairy herdsDohoo, Ian R.; Haddad, J. P.; VanLeeuwen, John A.; Keefe, Gregory P.; Weersink, A.
Risk factors for seropositivity for NC in Canadian dairy cowsHaddad, J. P.; Dohoo, Ian R.; VanLeeuwen, John A.; Keefe, Gregory P.; Scott, H. M.; Whiting, T.
The effect of MUN values on reproductive performance in dairy cattleArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
The impact of administration of an internal teat sealant, OrbeSeal*, on the somatic cell counts and particle recovered in the first seven days post-calvingSanford, C.; Leslie, K.; Keefe, Gregory P.; Dohoo, Ian R.; Stryhn, Henrik E.; Bashiri, A.; Groves, B.
Evaluation of extended therapy with pirlamycin hydrochloride for S. aureus mastitisKeefe, Gregory P.; VanLeeuwen, John A.; Wichtel, Jeffrey
A national JD program for dairy cattleKeefe, Gregory P.; VanLeeuwen, John A.; Barkema, H. W.; Tiwari, A.; McKenna, Shawn L.
The REFLECT statementO'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.
Johne's disease in Canada part IIMcKenna, Shawn L.; Keefe, Gregory P.; Tiwari, A.; VanLeeuwen, John A.; Barkema, H. W.
Neospora caninum in Maritime CanadaKeefe, Gregory P.; VanLeeuwen, John A.
Efficacy of an internal teat sealant, orbeseal, for reduction of clinical mastitis during the first 60 days post-partumSanford, C.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K.
Evaluation of the Svanovir ELISA for bovine leukosis, bovine viral diarrhea and M. paraturberculosisKeefe, Gregory P.; VanLeeuwen, John A.; Hotham, S.
The effect of non-nutritional factors on MUN levels in Ayrshire dairy cowsArunvipas, P.; Dohoo, Ian R.; VanLeeuwen, John A.; Leger, E.; Keefe, Gregory P.
Neosporosis in cattle - an updateKeefe, Gregory P.; VanLeeuwen, John A.
Effect of eprinomectin pour-on treatment around calving on reproduction parameters in adult dairy cows with limited outdoor exposureSithole, F.; Dohoo, Ian R.; Leslie, K.; DesCoteaux, L.; Godden, S.; Campbell, J.; Keefe, Gregory P.; Sanchez, J.
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 CanadaVan Schaik, G.; Schukken, Y.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Seroprevalence of production limiting diseases in the Maritimes--an updateVanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey
Herd seroprevalence of BVDV in Maritime dairiesVanLeeuwen, John A.; Keefe, Gregory P.
Ultrasonic imaging of marbling at feedlot entry as a predictor of carcass quality gradeKeefe, Gregory P.; Dohoo, Ian R.; Valcour, J. E.; Milton, R. L.
Associations between reproductive performance and seropositivity for bovine leukemia virus, bovine viral-diarrhea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Canadian dairy cowsVanleeuwen, J. A.; Haddad, J. P.; Dohoo, I. R.; Keefe, G. P.; Tiwari, A.; Tremblay, R.
Relationship between bulk tank milk urea nitrogen and individual cow milk urea nitrogenArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Direct production losses and treatment costs from bovine viral diarrhoea virus, bovine leukosis virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninumChi, J.; VanLeeuwen, John A.; Weersink, A.; 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 cowsSanford, C. J.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K. E.
Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosisTiwari, 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 cattleArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Herd prevalence and incidence of Streptococcus agalactiae in the dairy industry of Prince Edward IslandKeefe, 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 methodsTrenholm, M.; Keefe, Gregory P.; Dohoo, Ian R.
Evaluation of the reliability and repeatability of automated milk urea nitrogen testingArunvipas, 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 cattleSanford, C. J.; Keefe, Gregory P.; Dohoo, Ian R.; Leslie, K. E.; Dingwell, R. T.; DesCoteaux, L.; Barkema, H. W.
Microbiological quality of bulk tank raw milk in Prince Edward Island dairy herdsElmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Dingwell, R. T.
Clinical trial to determine the productivity impact of milk urea nitrogen reportsArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Lissemore, K. D.
NCKeefe, Gregory P.; VanLeeuwen, John A.
Descriptive and geographic analysis of a survey of drinking water quality on PEI dairy farmsVanLeeuwen, John A.; Keefe, Gregory P.
Evaluation of the Svanovir ELISA for bovine leukosis, bovine viral diarrhea and M. paratuberculosisKeefe, Gregory P.; VanLeeuwen, John A.; Hotham, S.
A survey of characteristics and management practices of PEI dairy producersVanLeeuwen, John A.; Keefe, Gregory P.
Estimate of the direct production losses in Canadian dairy herds with subclinical Mycobacterium avium subspecies paratuberculosis infectionTiwari, Ashwani; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Cow level prevalence of paratubercolosis in dairy cows in Atlantic CanadaMcKenna, Shawn L.; Barkema, Herman W.; Keefe, Gregory P.; VanLeeuwen, John A.; Sockett, D. C.
Herd prevalence and incidence of Streptococcus agalactiae mastitis in Prince Edward Island, CanadaKeefe, Gregory P.; Dohoo, Ian R.
The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, CanadaArunvipas, P.; Dohoo, Ian R.; VanLeeuwen, John A.; Keefe, Gregory P.
Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standardsMcKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.; Sockett, D. C.
NC in Maritime CanadaKeefe, Gregory P.; VanLeeuwen, John A.
Use of an ELISA to monitor internal parasite burdens in dairy cowsGuitian, J.; 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 periodSanford, C. J.; Keefe, Gregory P.; Dohoo, Ian R.; Barkema, H. W.; Dingwell, R. T.; Leslie, K. E.
The national cohort of dairy farmsReyher, 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.
Relationship between bulk tank MUN and individual cow MUN valuesArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Effects of BLV, BVDV, MAP, and NC on somatic cell countVanLeeuwen, John A.; Tiwari, A.; Dohoo, Ian R.; Keefe, Gregory P.; Haddad, J. P.; Tremblay, R.; Scott, H. M.; Whiting, T.
Estimation of the prevalence of verotoxigenic E. coli 0157VanLeeuwen, John A.; Keefe, Gregory P.
Seroprevalence and productivity effects of infection with bovine leukemia virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Maritime Canadian dairy cattleVanLeeuwen, John A.; Keefe, Gregory P.; Tiwari, A.
The impact of gastrointestinal nematodes in lactating cattleNodtvedt, 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 cattleTiwari, A.; VanLeeuwen, John A.; Keefe, Gregory P.
Economic impact of seropositivity of MAP in Canadian dairy cattleTiwari, 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 cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
The effect of MUN values on reproductive performance in dairy cattleArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Effects of seropositivity with BLV, MAP and NC on risk of culling in dairy cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Water quality and ruminant healthVanLeeuwen, John A.; Keefe, Gregory P.
Evaluation of the Svanovir ELISA for BLV, BVDV, & MAPKeefe, Gregory P.; VanLeeuwen, John A.; Hotham, S.
The reflect statementO’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.
Herd prevalence and incidence of Streptococcus agalactiae in Prince Edward Island, Canada and evaluation of an eradication extension programKeefe, Gregory P.; Dohoo, Ian R.
Neospora then and nowKeefe, Gregory P.; VanLeeuwen, John A.
Oral melengestrol acetate treatment for out-of-season breeding in the sheep possessing an extended breeding seasonWichtel, Jeffrey; Keefe, Gregory P.; Riley, Christopher B.
JD - prevalence in the Maritime provincesVanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey
Seroprevalence of paratuberculosis in the MaritimesVanLeeuwen, John A.; Keefe, Gregory P.; Wichtel, Jeffrey
Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herdsTiwari, A.; VanLeeuwen, J. A.; Dohoo, I. R.; Keefe, G. P.; Haddad, J. P.; Scott, H. M.; Whiting, T.
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 MaritimesChi, J.; VanLeeuwen, John A.; Weersink, A.; Keefe, Gregory P.
Evaluation of the effect of cow and test day factors on MUN testingArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Leger, E.; Keefe, Gregory P.
Factors contributing to nitrate contamination of well water on PEI dairy farmsVanLeeuwen, John A.; Keefe, Gregory P.
The relationship between milk urea mitrogen and reproductive performance in dairy cattleArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.
Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 1Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Jayarao, B. M.
Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 2Elmoslemany, A. M.; Keefe, G. P.; Dohoo, I. R.; Jayarao, B. M.
Evaluation of environmental fecal culture for Mycobacterium avium subspecies paratuberculosis detection in dairy herds and association with apparent within-herd prevalenceLavers , C.J. ; McKenna , S.L.; Dohoo , I.R.; Barkema , H.W.; Keefe , G.P.
Evaluation of selective dry cow treatment following on-farm cultureCameron , M.; McKenna , S.L.; Macdonald , K.A. ; Dohoo , I.R.; Roy , J.P. ; Keefe , G.P.
Evaluation of milk ELISA fordetection of Mycobacterium avium subspecies paratuberculosis in dairy herds and association with within-herd prevalenceLavers , C.J.; Barkema , H.W.; Dohoo , I.R.; McKenna , S.L.; Keefe , G.P.
Evaluation of milk ELISA for detection of Mycobacterium avium subspecies paratuberculosis in dairy herds and association with within-herd prevalence.Lavers , C.J.; Barkema , H.W.; Dohoo , I.R.; McKenna , S.L.; Keefe , G.P.
Effects of seropositivity for BLV, MAP, and NC on milk production and risk of culling Canadian dairy cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
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.
Culling risk of infection with BLV, MAP & NCTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
The use of an indirect Ostertagia ostertagi ELISA to predict milk production response after anthelmintic treatment in confined and semi-confined dairy herdsSanchez, J.; Dohoo, Ian R.; Leslie, K.; Keefe, Gregory P.; Markham, R. J. Frederick; Sithole, F.
Effects of seropositivity for BLV, MAP, and NC on calving to conception interval in Maritime Canadian dairy cattleHaddad, J. P.; Dohoo, Ian R.; VanLeeuwen, John A.; Tiwari, A.; Stryhn, Henrik E.; Keefe, Gregory P.
Effects of seropositivity for BLV, MAP, and NC on calving to conception interval in Canadian dairy cattleTiwari, 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 seasonLeger, E.; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey; Arunvipas, P.; VanLeeuwen, John A.
The economics of controlling infectious diseases on dairy farms, ; Weersink, A.; VanLeeuwen, John A.; Keefe, Gregory P.
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, CanadaLeger, 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, CanadaArunvipas, 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 farmsTiwari, 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 cattleTiwari, 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 cattleSanchez, 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 herdsGuitian, 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 cattleTiwari, 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 cattleArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Burton, Shelley A.; Lissemore, K. D.; Leger, E.
Comparison of two enzyme-linked immunosorbent assays for diagnosis of Mycobacterium avium subsp. paratuberculosisMcKenna, Shawn L.; Sockett, D. C.; Keefe, Gregory P.; McClure, J. Trenton; VanLeeuwen, John A.; Barkema, H. W.
Relationships among MUN, dietary nutrients & fecal nitrogen loss on dairy farmsArunvipas, P.; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Gregory P.; Burton, Shelley A.; Lissemore, K. D.
Increase in milk yield following eprinomectin treatment at calving in pastured dairy cattleNodtvedt, A.; Dohoo, Ian R.; Sanchez, J.; Conboy, Gary A.; DesCoteaux, L.; Keefe, Gregory P.
The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cowsNodtvedt, A.; Dohoo, Ian R.; Sanchez, J.; Conboy, Gary A.; DesCjteaux, L.; Keefe, Gregory P.; Leslie, K.; Campbell, J.
Test characteristics from latent-class models of the California Mastitis TestSanford, C. J.; Keefe, Gregory P.; Sanchez, J.; Dingwell, R. T.; Barkema, H. W.; Leslie, K. E.; Dohoo, Ian R.
Observational study of factors associated with seasonal variation in MUN observed on intensively managed pastures during the summer 2000 grazing season, in PEI, CanadaLeger, 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 cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Stryhn, Henrik E.; Keefe, Gregory P.
Milk antibodies against Ostertagia ostertagiSanchez, J.; Markham, R. J. Frederick; Dohoo, Ian R.; Sheppard, J.; Keefe, Gregory P.; Leslie, K.
The REFLECT statement, ; Connor, A. M.; Sargeant, J. M.; Gardner, I. A.; Dickson, J. S.; Torrence, M. E.
Preliminary results of an observational study describing the relationship between milk urea nitrogen and pasture management in Prince Edward Island dairy herdsLeger, 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 provincesTiwari, 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 cattleTiwari, A.; VanLeeuwen, John A.; Dohoo, Ian R.; Haddad, J. P.; Stryhn, Henrik E.; Keefe, Gregory P.
The association between bulk tank milk analysis for raw milk quality and on-farm management practicesElmoslemany, 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 samplesMcCarron, J. L.; Keefe, G. P.; McKenna, S. L.; Dohoo, I. R.; Poole, D. E.
Laboratory evaluation of 3M Petrifilms and University of Minnesota Bi-plates as potential on-farm tests for clinical mastitisMcCarron, J. L.; Keefe, G. P.; McKenna, S. L. B.; Dohoo, I. R.; Poole, D. E.
Risk factors for milk off-flavours in dairy herds from Prince Edward Island, CanadaMounchili, Aboubakar; Wichtel, Jeffrey; Dohoo, Ian R.; Keefe, Gregory P.; Halliday, L. J.
Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herdsCeballos-Marquez, A.; Barkema, H. W.; Stryhn, H.; Dohoo, I. R.; Keefe, G. P.; Wichtel, J. J.
Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herdsCeballos-Marquez, Alejandro; Barkema, Herman W.; Stryhn, Henrik; Dohoo, Ian R.; Keefe, Gregory P.; Wichtel, Jeffrey J.
Congenital dyserythropoiesis and dyskeratosis in a polled Hereford calfBurton, Shelley A.; Ikede, B. O.; Lofstedt, Jeanne; Keefe, Gregory P.; Miller, Lisa M.
Predicting the effect of anthelmintic treatment on milk production of dairy cattle in Canada using an Ostertagia ostertagi ELISA from individual milk samplesVanderstichel, Raphaël ; Dohoo, Ian ; Sanchez, Javier ; Sithole, Fortune ; Keefe, Gregory ; Stryhn, Henrik
Prevalence of infectious diseases in Maritime dairy cattleVanLeeuwen, 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 MaineMcKenna, Shawn L.; Keefe, Gregory P.; Barkema, H. W.; McClure, J. Trenton; VanLeeuwen, John A.; Hanna, Paul E.; Sockett, D. C.
Evaluation of the stability of Ostertagia ostertagi ELISA microtitre plates over time using cow milk samplesSithole, F.; Dohoo, Ian R.; Markham, R. J. Frederick; Sanchez, J.; Stryhn, Henrik E.; Keefe, Gregory P.
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 farmsMounchili, 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 cowsMartinson, S. A.; Hanna, P. E.; Ikede, B. O.; Lewis, J. P.; Miller, L. M.; Keefe, G. P.; McKenna, S. L.
The PEI Milk Off-flavours Project 2001-2004. For the Dairy Farmers of PEI, April 2005Wichtel, 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 standardMcKenna, Shawn L.; Keefe, Gregory P.; Sockett, D. C.; VanLeeuwen, John A.; McClure, J. Trenton; Hanna, Paul E.; Spangler, Elizabeth; Barkema, H. W.
A slaughterhouse study on the cow-level prevalence of paratuberculosis in dairy cow in Atlantic CanadaMcKenna, 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 PEIWichtel, Jeffrey; Keefe, Gregory P.; VanLeeuwen, John A.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
The economics of controlling infectious diseases on dairy farms, ; Weersink, A.; VanLeeuwen, John A.; Keefe, Gregory P.
Transmitted flavours in milk in PEI dairy herdsMounchili, 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 herdsMounchili, 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 herdsMounchili, 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 IslandWichtel, Jeffrey; VanLeeuwen, John A.; Keefe, Gregory P.; Spangler, Elizabeth; McNiven, Mary A.; Ogilvie, Timothy H.
The selenium status of dairy herds in Prince Edward IslandWichtel, 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 herdsMounchili, 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 herdsArunvipas, Pipat; VanLeeuwen, John A.; Dohoo, Ian R.; Keefe, Greg P.; Burton, Shelley A.; Lissemore, Kerry D.
Off-flavours in unpasteurized milk in PEI dairy herdsMounchili, 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, CanadaArunvipas, P.; VanLeeuwen, J. A.; Dohoo, I. R.; Leger, E. R.; Keefe, G. P.; Burton, A. S.; Lissemore, K. D.
Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farmsSaini, V.; , ; Léger, D.; , ; , ; , ; ,

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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 - ir:ir-batch6-232316513:03:55 2014-07-22
Field trial of intra-uterine antibiotic or prostaglandin for treatment of clinical endometritis in dairy cows - ir:ir-batch6-552218006:36:58 2014-07-22
Efficacy of intramammary tilmicosin at drying-off, and other risk factors, for the prevention of new intramammary infections during the dry period - ir:ir-batch6-551217106:37:31 2014-07-22
Evaluation of monensin controlled relapse capsules in cattle challenged with E. bovis and E. zuernii J. - ir:ir-batch6-553720706:39:44 2014-07-22
Efficacy of intramammary tilmicosin and risk factors for cure of Staphylococcus aureus infection in the dry period - ir:ir-batch6-231319306:42:44 2014-07-22
Monensin toxicosis in a dairy herd - ir:ir-batch6-230317814:10:00 2014-07-22
A consumer acceptance of fluid milk after raw milk selection using bulk tank bacteriologic and somatic cell count criteria - ir:ir-batch6-549920113:12:01 2014-07-22
Systematic review - ir:501715706:25:16 2014-07-22
Decision making in clinical mastitis therapy programmes - ir:ir-batch6-554019906:47:03 2014-07-22
Association of cow and quarter-level factors at drying-off with new intramammary infections during the dry period - ir:ir-batch6-231019306:49:28 2014-07-22
Monitoring mastitis pathogen patterns in a dairy herd using the hymast culture system - ir:ir-batch6-553620106:50:30 2014-07-22
Use of Pirlimycin in a Streptococcus agalactiae eradication protocol - ir:ir-batch6-553518906:50:45 2014-07-22
Comparative efficacy of a novel intramammary dry cow antibiotic to eliminate subclinical mastitis in the dry period - ir:ir-batch6-431818506:51:41 2014-07-22
Bacteriology and somatic cell counts in milk samples from ewes on a Scottish farm - ir:ir-batch6-339617312:09:18 2014-07-22
Decision-making in clinical mastitis therapy programmes - ir:ir-batch6-432315506:53:45 2014-07-22
Loss of milk and profits. / Pertes de lait et de profits - ir:180120617:19:21 2014-07-22
Johne's disease in Canada - ir:ir-batch6-551719806:55:19 2014-07-22
Factors associated with cure of subclinical Staphylococcus aureus mastitis during lactation - ir:ir-batch6-550616116:02:20 2014-07-22
Prepartum monensin for the reduction of energy associated disease in postpartum dairy cows - ir:ir-batch6-432216217:21:09 2014-07-22
Update on control of Staphylococcus aureus and Streptococcus agalactiae for management of mastitis - ir:500319606:26:55 2014-07-22
Lipolytic and proteolytic activity of organisms surviving pasteurization - ir:ir-batch6-549819207:07:47 2014-07-22
Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island - ir:ir-batch6-230117607:07:52 2014-07-22
The efficacy of intramammary tilmicosin at drying-off, and other risk factors for the prevention of new intramammary infections during the dry period - ir:ir-batch6-231517107:08:43 2014-07-22
Impact of a progesterone-releasing intravaginal device on plasma progesterone levels in lactating dairy cattle - ir:ir-batch6-431720007:12:31 2014-07-22
Streptococcus agalactiae mastitis - ir:ir-batch6-232416707:12:42 2014-07-22
The effect of treatment of clinical endometritis on reproductive performance in dairy cows - ir:ir-batch6-231618008:28:20 2014-07-22
Implementation of recommended mastitis prevention management practices and the herd level prevalence of contagious mastitis pathogens on Canadian dairy farms - ir:ir-batch6-421315413:46:47 2014-07-22
Defining and diagnosing postpartum clinical endometritis and its impact on reproductive performance in dairy cows - ir:ir-batch6-231716807:17:57 2014-07-22
Evaluation of a 3M Petrifilm on-farm milk culture system for use in selective dry cow therapy - ir:107744904:47:32 2014-07-22
Neospora caninum - ir:ir-batch6-552522814:19:45 2014-07-22
Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herds - ir:37025517:00:21 2014-07-22
Bulk tank milk urea nitrogen - ir:ir-batch6-230821106:32:26 2014-07-22
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 - ir:ir-batch6-561122513:46:37 2014-07-22
Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattle - ir:ir-batch6-230419807:28:21 2014-07-22
Risk factors of seropositivity for MAP in Canadian dairy cattle - ir:ir-batch6-555320006:33:23 2014-07-22
Efficacy of an internal teat sealant (OrbeSeal) for the prevention of new intramammary infections during the dry period - ir:ir-batch6-550719606:33:40 2014-07-22
Evaluation of minor pathogen intramammary infection, susceptibility parameters, and somatic cell counts on the development of new intramammary infections with major mastitis pathogens - ir:500231413:17:53 2014-07-22
The use of fecal egg counts and larval cultures as tools to monitor internal parasite burdens in Canadian dairy cattle - ir:ir-batch6-552821906:11:36 2014-07-22
Effects of BLV, BVDV, MAP, and NC on milk production - ir:ir-batch6-555520406:36:37 2014-07-22
Evaluation of melengestrol acetate and equine chorionic gonadotropin for out-of-season breeding in sheep on Prince Edward Island - ir:ir-batch6-264016706:37:09 2014-07-22
Seroprevalence of production limiting diseases in Ontario and Maritime dairy cattle - ir:ir-batch6-553119506:37:37 2014-07-22
Why be concerned about nitrate levels? Health issues, water quality guidelines and surface water concerns - ir:ir-batch6-562317906:38:03 2014-07-22
Seroprevalence of infection with Mycobacterium avium subspecies paratuberculosis, bovine leukemia virus, and bovine viral diarrhea virus in maritime Canada dairy cattle - ir:ir-batch6-232020814:19:02 2014-07-22
Preliminary results of an observational study describing the relationship between MUN and pasture management in PEI dairy herds - ir:ir-batch6-558223006:39:19 2014-07-22
Efficacy of an Internal Teat Sealant, OrbeSeal*, for the reduction of clinical mastitis during the first sixty days post-partum. - ir:ir-batch6-550121206:39:24 2014-07-22
Seroprevalence and spatial distribution of BLV, BVDV, MAP, and NC in Canadian dairy cattle - ir:ir-batch6-561318206:39:26 2014-07-22
The effect of non-nutritional factors on milk urea nitrogen levels in Holstein dairy cows - ir:ir-batch6-551117206:39:51 2014-07-22
Effects of seropositivity for MAP on risk of culling in Maritime Canadian dairy cattle - ir:ir-batch6-562021206:40:24 2014-07-22
Prevalence of contagious mastitis pathogens in bulk tank milk from Prince Edward Island dairy farms - ir:ir-batch6-421620506:40:33 2014-07-22
The REFLECT statement - ir:181822606:40:42 2014-07-22
Comparison of Oro-rumenal probe and rumenocentesis for prediction of rumen pH in dairy cattle - ir:ir-batch6-553423206:42:00 2014-07-22
Herd prevalence and incidence of Streptococcus agalactiae mastitis in Prince Edward Island, Canada and evaluation of the effectiveness of an eradication extension program - ir:ir-batch6-553819206:42:15 2014-07-22
Associations between gastrointestinal parasite antibody levels, herd management practices and milk yield in Virginia dairy herds - ir:ir-batch6-551822706:42:47 2014-07-22
Evaluation of MUN levels on bulk tank milk and individual cow milk - ir:ir-batch6-557617915:01:33 2014-07-22
Sensivity and specificity of the California Mastitis Test to identify the presence of intramamary infections on the day of dry off. - ir:ir-batch6-550520506:43:10 2014-07-22
Seroprevalence, spacial distribution and productivity effects of infection with Johne's disease and bovine leukosis in Maritime Canadian dairy cattle - ir:ir-batch6-552921406:43:23 2014-07-22
Seroprevalence, spatial distribution, & productivity effects of infection with BLV & MAP in Canadian dairy cattle - ir:ir-batch6-558520706:43:30 2014-07-22
Evaluation of ultrasound exam at feedlot entry as a predictor of carcas grade at slaughter - ir:ir-batch6-551416906:44:19 2014-07-22
Evaluation of milk urea nitrogen levels on bulk tank milk and individual cow milk - ir:ir-batch6-552320706:44:21 2014-07-22
Estimation of the prevalence and economic impact of domestic infectious diseases in Maritime dairy herds - ir:ir-batch6-559517206:45:21 2014-07-22
Explaining variation in MUN - ir:ir-batch6-557518906:45:42 2014-07-22
Johne's disease in Canada part I - ir:ir-batch6-229919506:46:03 2014-07-22
Evaluating and ELISA for monitoring parasite burdens in dairy cattle - ir:ir-batch6-550318706:46:05 2014-07-22
A survey of demographics and information demands of dairy producers - ir:ir-batch6-262616906:46:57 2014-07-22
Production losses and treatment costs from NC in Canadian dairy herds - ir:ir-batch6-559817806:47:05 2014-07-22
Risk factors for seropositivity for NC in Canadian dairy cows - ir:ir-batch6-559918614:19:45 2014-07-22
The effect of MUN values on reproductive performance in dairy cattle - ir:ir-batch6-556018106:48:45 2014-07-22
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 - ir:ir-batch6-550422306:48:59 2014-07-22
Evaluation of extended therapy with pirlamycin hydrochloride for S. aureus mastitis - ir:ir-batch6-559020606:49:01 2014-07-22
A national JD program for dairy cattle - ir:ir-batch6-555720406:49:46 2014-07-22
The REFLECT statement - ir:181622012:35:06 2014-07-22
Johne's disease in Canada part II - ir:ir-batch6-229822206:50:23 2014-07-22
Neospora caninum in Maritime Canada - ir:ir-batch6-553020313:17:23 2014-07-22
Efficacy of an internal teat sealant, orbeseal, for reduction of clinical mastitis during the first 60 days post-partum - ir:ir-batch6-424322206:50:56 2014-07-22
Evaluation of the Svanovir ELISA for bovine leukosis, bovine viral diarrhea and M. paraturberculosis - ir:ir-batch6-553218206:51:30 2014-07-22
The effect of non-nutritional factors on MUN levels in Ayrshire dairy cows - ir:ir-batch6-561420806:51:50 2014-07-22
Neosporosis in cattle - an update - ir:ir-batch6-558615206:51:56 2014-07-22
Effect of eprinomectin pour-on treatment around calving on reproduction parameters in adult dairy cows with limited outdoor exposure - ir:ir-batch6-424123014:09:18 2014-07-22
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 - ir:ir-batch6-557721317:11:33 2014-07-22
Seroprevalence of production limiting diseases in the Maritimes--an update - ir:ir-batch6-571318106:54:55 2014-07-22
Herd seroprevalence of BVDV in Maritime dairies - ir:ir-batch6-558716906:54:57 2014-07-22
Ultrasonic imaging of marbling at feedlot entry as a predictor of carcass quality grade - ir:ir-batch6-424517906:55:14 2014-07-22
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 - ir:37123306:55:54 2014-07-22
Relationship between bulk tank milk urea nitrogen and individual cow milk urea nitrogen - ir:ir-batch6-551518006:57:06 2014-07-22
Direct production losses and treatment costs from bovine viral diarrhoea virus, bovine leukosis virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum - ir:ir-batch6-231821806:57:20 2014-07-22
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 - ir:ir-batch6-230017706:57:25 2014-07-22
Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosis - ir:ir-batch6-229723206:57:52 2014-07-22
The effect of non-nutritional factors on milk urea nitrogen levels in Ayrshire cattle - ir:ir-batch6-551618817:18:39 2014-07-22
Herd prevalence and incidence of Streptococcus agalactiae in the dairy industry of Prince Edward Island - ir:ir-batch6-232520206:58:43 2014-07-22
Effect of freezing on somatic cell count of quarter milk samples using flow cytometry and flouro-opto-electronic methods - ir:ir-batch6-550018806:59:45 2014-07-22
Evaluation of the reliability and repeatability of automated milk urea nitrogen testing - ir:ir-batch6-231419806:59:55 2014-07-22
Efficacy of using an internal teat sealer to prevent new intramammary infections in nonlactating dairy cattle - ir:ir-batch6-230218607:00:12 2014-07-22
Microbiological quality of bulk tank raw milk in Prince Edward Island dairy herds - ir:230414:07:21 2014-07-22
Clinical trial to determine the productivity impact of milk urea nitrogen reports - ir:ir-batch6-424017207:00:50 2014-07-22
NC - ir:ir-batch6-557917107:00:52 2014-07-22
Descriptive and geographic analysis of a survey of drinking water quality on PEI dairy farms - ir:ir-batch6-562417516:48:09 2014-07-22
Evaluation of the Svanovir ELISA for bovine leukosis, bovine viral diarrhea and M. paratuberculosis - ir:ir-batch6-552721607:01:43 2014-07-22
A survey of characteristics and management practices of PEI dairy producers - ir:ir-batch6-559318916:55:13 2014-07-22
Estimate of the direct production losses in Canadian dairy herds with subclinical Mycobacterium avium subspecies paratuberculosis infection - ir:ir-batch6-596721507:03:49 2014-07-22
Cow level prevalence of paratubercolosis in dairy cows in Atlantic Canada - ir:ir-batch6-550221313:43:24 2014-07-22
Herd prevalence and incidence of Streptococcus agalactiae mastitis in Prince Edward Island, Canada - ir:ir-batch6-553916507:05:21 2014-07-22
The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, Canada - ir:ir-batch6-231219812:24:09 2014-07-22
Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standards - ir:ir-batch6-230620407:05:38 2014-07-22
NC in Maritime Canada - ir:ir-batch6-558117607:05:52 2014-07-22
Use of an ELISA to monitor internal parasite burdens in dairy cows - ir:ir-batch6-425518413:44:48 2014-07-22
Efficacy of an internal teat sealer used in conjunction with intramammary antibiotics on the cure of intramammary infections during the dry period - ir:ir-batch6-421020814:49:52 2014-07-22
The national cohort of dairy farms - ir:74818607:07:14 2014-07-22
Relationship between bulk tank MUN and individual cow MUN values - ir:ir-batch6-561620107:08:16 2014-07-22
Effects of BLV, BVDV, MAP, and NC on somatic cell count - ir:ir-batch6-555620107:08:45 2014-07-22
Estimation of the prevalence of verotoxigenic E. coli 0157 - ir:ir-batch6-559416807:08:46 2014-07-22
Seroprevalence and productivity effects of infection with bovine leukemia virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Maritime Canadian dairy cattle - ir:ir-batch6-432116907:09:52 2014-07-22
The impact of gastrointestinal nematodes in lactating cattle - ir:ir-batch6-552420006:15:52 2014-07-22
Productivity effects of infection with BLV, MAP, and NC in Maritime Canadian dairy cattle - ir:ir-batch6-557416607:10:27 2014-07-22
Economic impact of seropositivity of MAP in Canadian dairy cattle - ir:ir-batch6-555418007:10:51 2014-07-22
Effects of seropositivity for Mycobacterium avium subspecies paptuberculosis on risk of culling in maritime Canadian dairy cattle - ir:ir-batch6-552020407:11:20 2014-07-22
The effect of MUN values on reproductive performance in dairy cattle - ir:ir-batch6-557118507:11:25 2014-07-22
Effects of seropositivity with BLV, MAP and NC on risk of culling in dairy cattle - ir:ir-batch6-556718907:11:40 2014-07-22
Water quality and ruminant health - ir:ir-batch6-559218907:12:11 2014-07-22
Evaluation of the Svanovir ELISA for BLV, BVDV, & MAP - ir:ir-batch6-558018107:12:56 2014-07-22
The reflect statement - ir:32821908:36:49 2014-07-22
Herd prevalence and incidence of Streptococcus agalactiae in Prince Edward Island, Canada and evaluation of an eradication extension program - ir:ir-batch6-425914907:14:23 2014-07-22
Neospora then and now - ir:ir-batch6-232219807:14:30 2014-07-22
Oral melengestrol acetate treatment for out-of-season breeding in the sheep possessing an extended breeding season - ir:ir-batch6-570523107:14:42 2014-07-22
JD - prevalence in the Maritime provinces - ir:ir-batch6-558818907:15:24 2014-07-22
Seroprevalence of paratuberculosis in the Maritimes - ir:ir-batch6-571419711:03:42 2014-07-22
Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herds - ir:92021807:16:26 2014-07-22
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 - ir:ir-batch6-231917507:17:04 2014-07-22
Evaluation of the effect of cow and test day factors on MUN testing - ir:ir-batch6-561519107:17:27 2014-07-22
Factors contributing to nitrate contamination of well water on PEI dairy farms - ir:ir-batch6-562116907:17:29 2014-07-22
The relationship between milk urea mitrogen and reproductive performance in dairy cattle - ir:ir-batch6-551022607:18:04 2014-07-22
Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 1 - ir:320907:18:55 2014-07-22
Risk factors for bacteriological quality of bulk tank milk in Prince Edward Island dairy herds. Part 2 - ir:422407:19:15 2014-07-22
Evaluation of a 3M Petrifilm on-farm culture system for the detection of intramammary infection at the end of lactation - ir:94066906:39:39 2014-07-22
Evaluation of diagnostic tests for detection of Mycobacterium avium subsp. paratuberculosis (MAP) at the herd-level and cow-level - ir:971111007:56:15 2014-07-22
Herd- and cow-level risk factors associated with subclinical mastitis in dairy farms from the High Plains of the northern Antioquia, Colombia - ir:103865706:30:31 2014-07-22
Effects of seropositivity for BLV, MAP, and NC on milk production and risk of culling Canadian dairy cattle - ir:ir-batch6-556435603:50:51 2014-07-22
A longitudinal study of gastrointestinal parasites in Canadian dairy farms: - ir:ir-batch6-361627706:10:44 2014-07-22
Culling risk of infection with BLV, MAP & NC - ir:ir-batch6-556921415:21:20 2014-07-22
The use of an indirect Ostertagia ostertagi ELISA to predict milk production response after anthelmintic treatment in confined and semi-confined dairy herds - ir:ir-batch6-361321506:11:19 2014-07-22
Effects of seropositivity for BLV, MAP, and NC on calving to conception interval in Maritime Canadian dairy cattle - ir:ir-batch6-556122406:37:11 2014-07-22
Effects of seropositivity for BLV, MAP, and NC on calving to conception interval in Canadian dairy cattle - ir:ir-batch6-556823806:38:57 2014-07-22
Observational study assessing the significance of nutritioinal and management factors associated with MUN levels during the non-grazing season - ir:ir-batch6-561823608:47:04 2014-07-22
The economics of controlling infectious diseases on dairy farms - ir:ir-batch6-431916206:43:51 2014-07-22
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 - ir:ir-batch6-551323206:44:48 2014-07-22
Effect of milk urea nitrogen and nutrition on reproductive performance in commercial dairy herds in Prince Edward Island, Canada - ir:ir-batch6-424422506:12:48 2014-07-22
Effects of seropositivity for BLV, MAP, and NC on milk production on 152 Canadian dairy farms - ir:ir-batch6-561223806:47:06 2014-07-22
Prevalence, spatial distribution, & management factors associated with seroprevalence for BLV in Canadian dairy cattle - ir:ir-batch6-556523706:49:41 2014-07-22
Use of an ELISA against Ostertagia ostertagi to monitor parasite burdens in lactating dairy cattle - ir:ir-batch6-558322506:13:43 2014-07-22
Relationships between bulk-tank antibodies to Ostertagia ostertagi and herd-management practices and measures of milk production in Nova Scotia dairy herds - ir:ir-batch6-232120706:14:27 2014-07-22
Prevalence, spatial distribution, & management factors associated with seroprevalence for MAP in Canadian dairy cattle - ir:ir-batch6-556619511:54:23 2014-07-22
The effect of MUN values and nutrition on reproductive performance in commercial dairy cattle - ir:ir-batch6-560822906:14:56 2014-07-22
Comparison of two enzyme-linked immunosorbent assays for diagnosis of Mycobacterium avium subsp. paratuberculosis - ir:ir-batch6-230522106:58:58 2014-07-22
Relationships among MUN, dietary nutrients & fecal nitrogen loss on dairy farms - ir:ir-batch6-560722811:19:45 2014-07-22
Increase in milk yield following eprinomectin treatment at calving in pastured dairy cattle - ir:ir-batch6-329323206:15:14 2014-07-22
The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cows - ir:ir-batch6-329224406:15:26 2014-07-22
Evaluation of environmental fecal culture for Mycobacterium avium subspecies paratuberculosis detection in dairy herds and association with apparent within-herd prevalence - ir:855210406:27:18 2014-07-22
Test characteristics from latent-class models of the California Mastitis Test - ir:ir-batch6-413828416:20:49 2014-07-22
Observational study of factors associated with seasonal variation in MUN observed on intensively managed pastures during the summer 2000 grazing season, in PEI, Canada - ir:ir-batch6-561723807:09:00 2014-07-22
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 - ir:ir-batch6-424820215:14:00 2014-07-22
Milk antibodies against Ostertagia ostertagi - ir:ir-batch6-361521117:21:42 2014-07-22
The REFLECT statement - ir:181426707:12:16 2014-07-22
Preliminary results of an observational study describing the relationship between milk urea nitrogen and pasture management in Prince Edward Island dairy herds - ir:ir-batch6-552620907:14:45 2014-07-22
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 - ir:ir-batch6-230722507:15:05 2014-07-22
Effects of seropositivity for Bovine Leukemia Virus, Mycobacterium avium subspecies paratuberculosis and Neospora caninum on risk of culling in dairy cattle - ir:ir-batch6-550820707:15:14 2014-07-22
Evaluation of selective dry cow treatment following on-farm culture - ir:893613304:35:36 2014-07-22
Evaluation of milk ELISA fordetection of Mycobacterium avium subspecies paratuberculosis in dairy herds and association with within-herd prevalence - ir:894211804:35:37 2014-07-22
The association between bulk tank milk analysis for raw milk quality and on-farm management practices - ir:29928507:18:52 2014-07-22
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 - ir:732507:18:59 2014-07-22
Laboratory evaluation of 3M Petrifilms and University of Minnesota Bi-plates as potential on-farm tests for clinical mastitis - ir:833407:19:01 2014-07-22
Risk factors for milk off-flavours in dairy herds from Prince Edward Island, Canada - ir:ir-batch6-230931107:19:34 2014-07-22
Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herds - ir:78825307:19:43 2014-07-22
Evaluation of milk ELISA for detection of Mycobacterium avium subspecies paratuberculosis in dairy herds and association with within-herd prevalence. - ir:94857006:28:57 2014-07-22
Bulk tank milk selenium and its association with milk production parameters in Canadian dairy herds - ir:105941707:19:46 2014-07-22
Congenital dyserythropoiesis and dyskeratosis in a polled Hereford calf - ir:ir-batch6-232624812:42:25 2014-07-22
Prevalence of infectious diseases in Maritime dairy cattle - ir:ir-batch6-571824006:32:58 2014-07-22
Cow-level prevalence of paratuberculosis in culled dairy cows in Atlantic Canada and Maine - ir:ir-batch6-414526906:14:11 2014-07-22
Evaluation of the stability of Ostertagia ostertagi ELISA microtitre plates over time using cow milk samples - ir:ir-batch6-259923806:14:18 2014-07-22
Test evaluation of three ELISA's for detection of antibodies to MAP. - ir:ir-batch6-556225311:04:34 2014-07-22
Off-flavours in bulk milk in Prince Edward Island dairy farms - ir:ir-batch6-570627316:57:11 2014-07-22
Comparison of bacterial culture, histopathology, and immunohistochemistry for the diagnosis of Johne's disease in culled dairy cows - ir:ir-batch9-11342806:16:12 2014-07-22
Predicting the effect of anthelmintic treatment on milk production of dairy cattle in Canada using an Ostertagia ostertagi ELISA from individual milk samples - ir:614935006:29:38 2014-07-22
The PEI Milk Off-flavours Project 2001-2004. For the Dairy Farmers of PEI, April 2005 - ir:ir-batch6-584237216:46:32 2014-07-22
Evaluation of the sensitivity of three ELISA tests for the detection of Mycobacterium avium paratuberculosis infection using tissue culture as a gold standard - ir:ir-batch6-550931314:47:03 2014-07-22
A slaughterhouse study on the cow-level prevalence of paratuberculosis in dairy cow in Atlantic Canada - ir:ir-batch6-555925611:47:06 2014-07-22
Selenium in dairy cows in PEI - ir:ir-batch6-558920406:36:27 2014-07-22
The economics of controlling infectious diseases on dairy farms - ir:ir-batch6-432013706:44:18 2014-07-22
Transmitted flavours in milk in PEI dairy herds - ir:ir-batch6-570729307:22:14 2014-07-22
Sensory evaluation and factors associated with transmitted flavours in milk in PEI dairy herds - ir:ir-batch6-557230310:27:06 2014-07-22
Transmitted flavours in milk in PEI dairy herds - ir:ir-batch6-570832607:22:19 2014-07-22
The selenium status of lactating cows in Prince Edward Island - ir:ir-batch6-571723706:55:21 2014-07-22
The selenium status of dairy herds in Prince Edward Island - ir:ir-batch6-231128906:59:47 2014-07-22
The Selenium Status of Dairy Herds in Prince Edward Island. - ir:ir-batch6-584321907:00:16 2014-07-22
Factors associated with off-flavors in milk from PEI dairy herds - ir:ir-batch6-552126507:22:20 2014-07-22
Relationships among milk urea-nitrogen, dietary parameters, and fecal nitrogen in commercial dairy herds - ir:84424910:32:09 2014-07-22
Off-flavours in unpasteurized milk in PEI dairy herds - ir:ir-batch6-561928513:50:54 2014-07-22
Milk urea-nitrogen negatively affected first-service breeding success in commercial dairy cows in Prince Edward Island, Canada - ir:84337907:50:35 2014-07-22
Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farms - ir:501920206:23:58 2014-07-22