J. VanLeeuwen

发表

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.

I. Dohoo, J. Haddad, R. Tremblay, 2010, Preventive veterinary medicine.

Livelihood impacts of Calliandra calothyrsus and Sesbania sesban: Supplementary feed in smallholder dairy farms in Kenya

J. VanLeeuwen, S. McKenna, C. Walton, 2019, Journal of Development and Agricultural Economics.

Type 1 Diabetes Mellitus and Components in Drinking Water and Diet: A Population-Based, Case-Control Study in Prince Edward Island, Canada

J. VanLeeuwen, P. McKinney, V. Benson, 2010, Journal of the American College of Nutrition.

Bulk tank milk urea nitrogen: seasonal patterns and relationship to individual cow milk urea nitrogen values.

I. Dohoo, J. VanLeeuwen, G. Keefe, 2004, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.

Evaluation of the reliability and repeatability of automated milk urea nitrogen testing.

I. Dohoo, J. VanLeeuwen, G. Keefe, 2003, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.

Evaluation of milk urea nitrogen levels on bulk tank milk and individual cow milk

I. Dohoo, J. VanLeeuwen, G. Keefe, 2001 .

Pilot Study on the Impact of Biogas as a Fuel Source on Respiratory Health of Women on Rural Kenyan Smallholder Dairy Farms

J. VanLeeuwen, J. Guernsey, K. Critchley, 2012, Journal of environmental and public health.

EXPERT SYSTEMS FOR METHOD DEVELOPMENT IN HPLC

L.M.C. Buydens, Gerrit Kateman, M. Mulholland, 1990 .

Effect of nutrition education and dairy group membership on nutrition knowledge, practices and diet quality for rural Kenyan farm women

J. VanLeeuwen, S. Mbugua, D. Maclellan, 2017 .

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

H. Barkema, J. VanLeeuwen, G. Keefe, 2006, The Canadian veterinary journal = La revue veterinaire canadienne.

Seroprevalence of Mycobacterium avium subspecies paratuberculosis, Neospora caninum, Bovine leukemia virus, and Bovine viral diarrhea virus infection among dairy cattle and herds in Alberta and agroecological risk factors associated with seropositivity.

J. VanLeeuwen, John T. Y. Wu, E. Chow, 2006, The Canadian veterinary journal = La revue veterinaire canadienne.

Liver Parasites and Body Condition in Relation to Environmental Contaminants in Caribou (Rangifer tarandus) from Labrador, Canada

J. VanLeeuwen, N. Burgess, S. McBurney, 2009 .

Dairy producer satisfaction and knowledge transfer with the veterinary-administered risk assessment and management plan in a voluntary Johne's disease control program

J. VanLeeuwen, G. Keefe, S. McKenna, 2022, Journal of Dairy Science.

Making Tradeoffs for Agroecosystem Health

J. VanLeeuwen, M. Forsyth, 2008 .

Proposed Canadian Voluntary National Johne's Disease Prevention and Control Program.

H. Barkema, J. VanLeeuwen, J. Jansen, 2006, The Canadian veterinary journal = La revue veterinaire canadienne.

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.

H. Stryhn, I. Dohoo, J. Haddad, 2005, Veterinary microbiology.

Cow-level prevalence of paratuberculosis in culled dairy cows in Atlantic Canada and Maine.

H. Barkema, J. VanLeeuwen, G. Keefe, 2004, Journal of dairy science.

Effects of Calliandra and Sesbania on Daily Milk Production in Dairy Cows on Commercial Smallholder Farms in Kenya

J. VanLeeuwen, S. McKenna, C. Walton, 2020, Veterinary medicine international.

Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herds.

I. Dohoo, J. Haddad, J. VanLeeuwen, 2010, Preventive veterinary medicine.

Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosis.

I. Dohoo, J. Haddad, R. Tremblay, 2007, Journal of dairy science.

Estimate of the direct production losses in Canadian dairy herds with subclinical Mycobacterium avium subspecies paratuberculosis infection.

A. Weersink, I. Dohoo, J. VanLeeuwen, 2008, The Canadian veterinary journal = La revue veterinaire canadienne.

Comparison of Two Enzyme-Linked Immunosorbent Assays for Diagnosis of Mycobacterium Avium Subsp. Paratuberculosis

H. Barkema, J. VanLeeuwen, G. Keefe, 2005, Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc.

Communication skills training and assessment of food animal production medicine veterinarians: A component of a voluntary Johne's disease control program

C. Adams, J. VanLeeuwen, G. Keefe, 2022, Journal of Dairy Science.

Effects of Seropositivity for Bovine Leukemia Virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on Risk of Culling in Dairy Cattle

Haddad, H. Stryhn, I. Dohoo, 2019 .

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

J. VanLeeuwen, G. Keefe, J. Wichtel, 2001, The Canadian veterinary journal = La revue veterinaire canadienne.

Assessment of farmers' compliance in implementing recommended cow comfort changes and their effects on lying time, stall and cow cleanliness within smallholder dairy farms in Kenya.

C. Revie, J. VanLeeuwen, G. Gitau, 2019, Preventive veterinary medicine.

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

H. Stryhn, I. Dohoo, J. VanLeeuwen, 2003 .

Seroprevalence and productivity effects of infection with bovine leukemia virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in Maritime Canadian dairy cattle

J. VanLeeuwen, G. Keefe, A. Tiwari, 2002 .

Neospora then and now: prevalence of Neospora caninum in Maritime Canada in 1979, 1989, and 1998.

J. VanLeeuwen, G. Keefe, 2000, The Canadian veterinary journal = La revue veterinaire canadienne.

Seroprevalences of antibodies against bovine leukemia virus, bovine viral diarrhea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in beef and dairy cattle in Manitoba.

J. VanLeeuwen, A. Tiwari, J. Plaizier, 2006, The Canadian veterinary journal = La revue veterinaire canadienne.

Seroprevalence of antibodies against bovine leukemia virus, bovine viral diarrhea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in dairy cattle in Saskatchewan.

J. VanLeeuwen, A. Tiwari, L. Forsythe, 2005, The Canadian veterinary journal = La revue veterinaire canadienne.

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

H. Barkema, J. VanLeeuwen, G. Keefe, 2006, The Canadian veterinary journal = La revue veterinaire canadienne.

Seroprevalence of production limiting diseases in Ontario and Maritime dairy cattle

J. VanLeeuwen, G. Keefe, J. Wichtel, 2000 .

Short communication: Extended-spectrum cephalosporin-resistant Escherichia coli in colostrum from New Brunswick, Canada, dairy cows harbor blaCMY-2 and blaTEM resistance genes.

J. Sanchez, J. VanLeeuwen, G. Keefe, 2017, Journal of dairy science.

Incidence and effects of subacute ruminal acidosis and subclinical ketosis with respect to postpartum anestrus in grazing dairy cows

J. G. Estrada, J. VanLeeuwen, D. Vallejo-Timarán, 2020, Heliyon.

A systematic review-meta-analysis of primary research investigating the effect of selected alternative treatments on gastrointestinal nematodes in sheep under field conditions.

A. Rajić, A. Peregrine, J. VanLeeuwen, 2012, Preventive veterinary medicine.

Risk Factors for the Development of Shell Disease in Impounded Populations of the American Lobster, Homarus americanus

J. VanLeeuwen, R. Cawthorn, Michelle Theriault, 2008 .

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

D. Kelton, H. Stryhn, J. VanLeeuwen, 2016, Preventive veterinary medicine.

Predicting within-herd prevalence of infection with bovine leukemia virus using bulk-tank milk antibody levels.

D. Kelton, H. Stryhn, J. VanLeeuwen, 2015, Preventive veterinary medicine.

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

D. Kelton, Javier Sánchez, J. VanLeeuwen, 2015, Preventive veterinary medicine.

The association of serum β-hydroxybutyrate concentration with fetal number and health indicators in late-gestation ewes in commercial meat flocks in Prince Edward Island.

J. VanLeeuwen, S. McKenna, J. Rodríguez-Lecompte, 2018, Preventive veterinary medicine.

Comparison of targeted selective and whole flock treatment of periparturient ewes for controlling Haemonchus sp. on sheep farms in Ontario, Canada

Z. Poljak, T. Westers, A. Jones-Bitton, 2017 .

Identification of effective treatment criteria for use in targeted selective treatment programs to control haemonchosis in periparturient ewes in Ontario, Canada.

Z. Poljak, T. Westers, A. Jones-Bitton, 2016, Preventive veterinary medicine.

A systematic review and meta-analysis of factors associated with anthelmintic resistance in sheep.

A. Jones-Bitton, A. Peregrine, L. Falzon, 2014, Preventive veterinary medicine.

A survey of farm management practices and their associations with anthelmintic resistance in sheep flocks in Ontario, Canada

A. Jones-Bitton, A. Peregrine, L. Falzon, 2013 .

Comparison of serological methods for the diagnosis of Neospora caninum infection in cattle.

H. Barkema, J. VanLeeuwen, W. Wapenaar, 2007, Veterinary parasitology.

Prevalence estimates for paratuberculosis adjusted for test variability using Bayesian analysis.

C. Crainiceanu, Y. Schukken, J. VanLeeuwen, 2003, Preventive veterinary medicine.

Efficacy of targeted anthelmintic treatment for suppression of the peri-parturient egg rise in ewes and impact on 50-day lamb weights

A. Jones-Bitton, A. Peregrine, L. Falzon, 2014 .

Anthelmintic resistance in sheep flocks in Ontario, Canada.

A. Jones-Bitton, A. Peregrine, L. Falzon, 2013, Veterinary parasitology.

Evaluation of the utility of subjective clinical parameters for estimating fecal egg counts and packed cell volume in Canadian sheep flocks.

A. Peregrine, J. VanLeeuwen, D. Kelton, 2014, Veterinary parasitology.

Management factors associated with time-to-onset and fecal egg/oocyst counts of gastrointestinal parasites in heifer calves on Kenyan smallholder farms.

J. VanLeeuwen, P. Kimeli, G. Gitau, 2020, Veterinary parasitology.

Comparison of flow cytometry and immunofluorescence microscopy for the detection of Giardia duodenalis in bovine fecal samples

H. Barkema, J. VanLeeuwen, F. Uehlinger, 2008, Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc.

Direct Production Losses and Treatment Costs due to Four Dairy Cattle Diseases

A. Weersink, J. Chi, J. VanLeeuwen, 2002 .

Endoparasites in dogs and cats diagnosed at the Veterinary Teaching Hospital (VTH) of the University of Prince Edward Island between 2000 and 2017. A large-scale retrospective study.

R. Galuppi, S. Greenwood, J. VanLeeuwen, 2019, Preventive veterinary medicine.

Prevalence of Cryptosporidia, Eimeria, Giardia, and Strongyloides in pre-weaned calves on smallholder dairy farms in Mukurwe-ini district, Kenya

J. VanLeeuwen, C. Mulei, F. Uehlinger, 2015, Veterinary world.

Evaluation of a commercially available luteinizing hormone test for its ability to distinguish between ovariectomized and sexually intact bitches.

J. VanLeeuwen, Robert M Löfstedt, John A Vanleeuwen, 2002, Journal of the American Veterinary Medical Association.

Exploring factors associated with bulk tank milk urea nitrogen in Central Thailand

H. Stryhn, J. VanLeeuwen, P. Arunvipas, 2018, Veterinary world.

Risk factors associated with Cryptosporidia, Eimeria, and diarrhea in smallholder dairy farms in Mukurwe-ini Sub-County, Nyeri County, Kenya

J. VanLeeuwen, C. Mulei, F. Uehlinger, 2016, Veterinary world.

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

I. Dohoo, J. VanLeeuwen, G. Keefe, 2003, Preventive veterinary medicine.

Seroprevalence of antibodies for bovine viral diarrhoea virus, Brucella abortus and Neospora caninum, and their roles in the incidence of abortion/foetal loss in dairy cattle herds in Nakuru District, Kenya

J. VanLeeuwen, N. M. John, J. Wabacha, 2019, BMC Veterinary Research.

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.

A. Weersink, J. Chi, J. VanLeeuwen, 2002, Preventive veterinary medicine.

Food Consumption and the Risk of Type 1 Diabetes in Children and Youth: A Population-Based, Case-Control Study in Prince Edward Island, Canada

J. VanLeeuwen, P. McKinney, V. Benson, 2008, Journal of the American College of Nutrition.

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

A. Weersink, J. Chi, J. VanLeeuwen, 2002, Preventive veterinary medicine.

Evaluation of influence of milk urea nitrogen on reproductive performance in smallholder dairy farms.

H. Stryhn, J. VanLeeuwen, P. Arunvipas, 2020, Australian veterinary journal.

Association between milk urea nitrogen and first service conception in smallholder dairy farms under heat and humidity stress

J. VanLeeuwen, P. Arunvipas, S. Kananub, 2018, Veterinary world.

Factors influencing economic efficiency of milk production among small-scale dairy farms in Mukurweini, Nyeri County, Kenya

J. Mburu, J. VanLeeuwen, G. Gitau, 2019, Tropical Animal Health and Production.

Seroprevalence and risk factors of Neospora caninum and Bovine Viral Diarrhoea Virus in smallholder dairy cattle in Kenya

J. VanLeeuwen, S. McKenna, Dennis Makau, 2021, East African Journal of Science, Technology and Innovation.

Randomized controlled trial on impacts of dairy meal feeding interventions on early lactation milk production in smallholder dairy farms of Central Kenya.

J. VanLeeuwen, C. Kamunde, F. Uehlinger, 2016, Preventive veterinary medicine.

Associations of diet quality with dairy group membership, membership duration and non-membership for Kenyan farm women and children: a comparative study

F. Yeudall, J. VanLeeuwen, S. Mbugua, 2012, Public Health Nutrition.

Sero-prevalence and risk factors of infectious bovine rhinotracheitis virus (type 1) in Meru County, Kenya.

J. VanLeeuwen, P. Kimeli, D. Gakuya, 2019, Preventive veterinary medicine.

Spatial analysis of land use impact on ground water nitrate concentrations.

I. Dohoo, J. VanLeeuwen, V. Benson, 2006, Journal of environmental quality.

Mastitogenic bacteria isolated from dairy cows in Kenya and their antimicrobial sensitivity.

J. VanLeeuwen, C. Mulei, G. Gitau, 2014, Journal of the South African Veterinary Association.

New method for the calculation of the pair correlation function. I

J. VanLeeuwen, J Vanleeuwen, 1959 .

Use of in-stream reservoirs to reduce bacterial contamination of rural watersheds.

V. Gannon, S. Kienzle, J. Byrne, 2005, The Science of the total environment.

Effect of housing improvement and other factors on the growth of heifer calves on Kenyan smallholder dairy farms

S. Greenwood, J. VanLeeuwen, S. McKenna, 2021, Tropical Animal Health and Production.

Effect of housing improvement and other factors on the growth of heifer calves on Kenyan smallholder dairy farms

S. Greenwood, J. VanLeeuwen, S. McKenna, 2021, Tropical animal health and production.

Breast Cancer Risk, Fungicide Exposure and CYP1A1*2A Gene-Environment Interactions in a Province-Wide Case Control Study in Prince Edward Island, Canada

J. Ashley-Martin, J. VanLeeuwen, P. Andreou, 2012, International journal of environmental research and public health.

Association Between Duration of Community-based Group Membership and Sustainable Livelihoods for Kenyan Women Dairy Farmers

F. Yeudall, J. VanLeeuwen, Jennifer P. Taylor, 2012 .

Associations of farm management practices with annual milk sales on smallholder dairy farms in Kenya

J. VanLeeuwen, C. Kamunde, F. Uehlinger, 2015, Veterinary world.

Management factors associated with perinatal lamb mortality in Prince Edward Island flocks.

H. Stryhn, J. VanLeeuwen, S. McKenna, 2020, Preventive veterinary medicine.

Prevalence and distribution of gastrointestinal nematodes on 32 organic and conventional commercial sheep farms in Ontario and Quebec, Canada (2006-2008).

A. Peregrine, J. VanLeeuwen, D. Kelton, 2010, Veterinary parasitology.

Effects of Calliandra and Sesbania supplementation on weight gain in dairy calves on smallholder farms in Kenya.

J. VanLeeuwen, S. McKenna, C. Walton, 2019, Preventive veterinary medicine.

Animal and management factors associated with weight gain in dairy calves and heifers on smallholder dairy farms in Kenya.

J. VanLeeuwen, S. McKenna, C. Walton, 2018, Preventive veterinary medicine.

A comparison between indirect ELISA and tuberculin skin test in the diagnosis of bovine tuberculosis in Kenya

J. VanLeeuwen, P. Mbatha, D. Muasya, 2019, East African Journal of Science, Technology and Innovation.

Management, productivity and livelihood effects on Kenyan smallholder dairy farms from interventions addressing animal health and nutrition and milk quality

J. VanLeeuwen, C. Walton, J. Wichtel, 2011, Tropical Animal Health and Production.

Assessment of Effectiveness of Control Strategies Against Simulated Outbreaks of Highly Pathogenic Avian Influenza in Ontario, Canada

C. Dubé, J. Sanchez, J. VanLeeuwen, 2017, Transboundary and emerging diseases.

Evaluation of PetrifilmsTM as a diagnostic test to detect bovine mastitis organisms in Kenya

J. VanLeeuwen, C. Mulei, G. Gitau, 2012, Tropical Animal Health and Production.

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

I. Dohoo, J. Haddad, J. VanLeeuwen, 2009, Preventive veterinary medicine.

Monensin use against Neospora caninum challenge in dairy cattle.

J. VanLeeuwen, R. O'Handley, F. Markham, 2011, Veterinary parasitology.

Relationships among milk urea-nitrogen, dietary parameters, and fecal nitrogen in commercial dairy herds.

I. Dohoo, J. VanLeeuwen, G. Keefe, 2008, Canadian journal of veterinary research = Revue canadienne de recherche veterinaire.

The Economics Of Controlling Infectious Diseases On Dairy Farms

Junwook Chi, Alfons Weersink, A. Weersink, 2002 .

Ecosystem health: an essential field for veterinary medicine.

N O Nielsen, D Waltner-Toews, D. Waltner-Toews, 1998, Journal of the American Veterinary Medical Association.

Four Veterinary Colleges and a Common Vision: Ecosystem Health in Canadian Veterinary Colleges

J. Smits, D. Waltner-Toews, J. VanLeeuwen, 2004, EcoHealth.

Pilot project to investigate over-wintering of free-living gastrointestinal nematode larvae of sheep in Ontario, Canada.

A. Jones-Bitton, A. Peregrine, L. Falzon, 2014, The Canadian veterinary journal = La revue veterinaire canadienne.

Temporal analysis of groundwater nitrate concentrations from wells in Prince Edward Island, Canada: application of a linear mixed effects model

H. Stryhn, J. VanLeeuwen, V. Benson, 2007 .

Evolving Models of Human Health Toward an Ecosystem Context

David Waltner-Toews, B. Smit, D. Waltner-Toews, 1999 .

Impact of biogas digesters on cookhouse volatile organic compound exposure for rural Kenyan farmwomen

J. VanLeeuwen, M. Gibson, J. Guernsey, 2013, Journal of Exposure Science and Environmental Epidemiology.

Johne's disease in Canada part I

H. Barkema, J. VanLeeuwen, G. Keefe, 2006 .

Promoting Evidence-based Veterinary Medicine through the online resource ‘EBVM Learning’: User feedback

Laura R. Haddock, D. Grindlay, K. Verheyen, 2021, Veterinary Evidence.

A survey of demographics and information demands of dairy producers.

J. VanLeeuwen, G. Keefe, 2001, The Canadian veterinary journal = La revue veterinaire canadienne.

Evaluation of the Precision Xtra meter for monitoring blood β-hydroxybutyrate concentrations in late-gestation ewes

J. VanLeeuwen, S. McKenna, J. Rodríguez-Lecompte, 2018, Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc.

Management, productivity and livelihood effects on Kenyan smallholder dairy farms from interventions addressing animal health and nutrition and milk quality

J. VanLeeuwen, C. Walton, J. Wichtel, 2012, Tropical Animal Health and Production.

TYPE 1 DIABETES MELLITUS AND DRINKING WATER NITRATE CONCENTRATIONS ASSESSED AT THE LOT LEVEL

I. Dohoo, J. VanLeeuwen, P. McKinney, 2005 .

Evaluation of environmental and comfort improvements on affective welfare in heifer calves on smallholder dairy farms.

S. Greenwood, J. VanLeeuwen, S. McKenna, 2021, Preventive veterinary medicine.

Randomized Control Trial to Investigate Compliance with, and Impacts of, Cow Comfort Recommendations on Smallholder Dairy Farms in Kenya

J. VanLeeuwen, S. McKenna, G. Gitau, 2023, SSRN Electronic Journal.

Economic efficiency of milk production among small-scale dairy farmers in Mukurweini, Nyeri County, kenya

J. Mburu, J. VanLeeuwen, G. Gitau, 2018, Journal of Development and Agricultural Economics.

Impact of biogas digesters on wood utilisation and self-reported back pain for women living on rural Kenyan smallholder dairy farms

J. VanLeeuwen, J. Read Guernsey, M. Gibson, 2013, Global public health.

RES, AN EXPERT SYSTEM FOR THE SET-UP AND INTERPRETATION OF A RUGGEDNESS TEST IN HPLC METHOD VALIDATION .3. THE EVALUATION

Gerrit Kateman, M. Mulholland, F. A. Maris, 1991 .

Evaluation of a novel portable x-ray fluorescence screening tool for detection of arsenic exposure

J. VanLeeuwen, K. Alexander, J. Guernsey, 2015, Physiological measurement.