Johne’s disease in Canada: Part I: Clinical symptoms, pathophysiology, diagnosis, and prevalence in dairy herds A Tiwari, JA VanLeeuwen, SLB McKenna, GP Keefe, HW Barkema The Canadian Veterinary Journal 47 (9), 874, 2006 | 327 | 2006 |
Direct production losses and treatment costs from bovine viral diarrhoea virus, bovine leukosis virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum J Chi, JA VanLeeuwen, A Weersink, GP Keefe Preventive veterinary medicine 55 (2), 137-153, 2002 | 281 | 2002 |
Johne’s disease in Canada part II: disease impacts, risk factors, and control programs for dairy producers SLB McKenna, GP Keefe, A Tiwari, J VanLeeuwen, HW Barkema The Canadian veterinary journal 47 (11), 1089, 2006 | 232 | 2006 |
Associations between stomach cancer incidence and drinking water contamination with atrazine and nitrate in Ontario (Canada) agroecosystems, 1987-1991. JA Van Leeuwen, D Waltner-Toews, T Abernathy, B Smit, M Shoukri International Journal of epidemiology 28 (5), 836-840, 1999 | 163 | 1999 |
Evolving models of human health toward an ecosystem context JA VanLeeuwen, D Waltner‐Toews, T Abernathy, B Smit Ecosystem Health 5 (3), 204-219, 1999 | 160 | 1999 |
The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, Canada P Arunvipas, IR Dohoo, JA VanLeeuwen, GP Keefe Preventive Veterinary Medicine 59 (1-2), 83-93, 2003 | 159 | 2003 |
Seroprevalence of infection with Mycobacterium avium subspecies paratuberculosis, bovine leukemia virus, and bovine viral diarrhea virus in maritime Canada dairy cattle. JA VanLeeuwen, GP Keefe, R Tremblay, C Power, JJ Wichtel The Canadian Veterinary Journal 42 (3), 193, 2001 | 143 | 2001 |
Lifetime effects of infection with bovine leukemia virus on longevity and milk production of dairy cows O Nekouei, J VanLeeuwen, H Stryhn, D Kelton, G Keefe Preventive Veterinary Medicine 133, 1-9, 2016 | 141 | 2016 |
A systematic review and meta-analysis of factors associated with anthelmintic resistance in sheep LC Falzon, TJ O’neill, PI Menzies, AS Peregrine, A Jones-Bitton, ... Preventive veterinary medicine 117 (2), 388-402, 2014 | 127 | 2014 |
Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosis A Tiwari, JA VanLeeuwen, IR Dohoo, GP Keefe, JP Haddad, R Tremblay, ... Journal of dairy science 90 (2), 659-669, 2007 | 123 | 2007 |
Anthelmintic resistance in sheep flocks in Ontario, Canada LC Falzon, PI Menzies, KP Shakya, A Jones-Bitton, J Vanleeuwen, ... Veterinary parasitology 193 (1-3), 150-162, 2013 | 121 | 2013 |
Effects of seropositivity for bovine leukemia virus, bovine viral diarrhoea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on culling in dairy … A Tiwari, JA VanLeeuwen, IR Dohoo, H Stryhn, GP Keefe, JP Haddad Veterinary microbiology 109 (3-4), 147-158, 2005 | 113 | 2005 |
Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herds A Tiwari, JA VanLeeuwen, IR Dohoo, GP Keefe, JP Haddad, HM Scott, ... Preventive veterinary medicine 88 (1), 32-41, 2009 | 106 | 2009 |
Cow-level prevalence of paratuberculosis in culled dairy cows in Atlantic Canada and Maine SLB McKenna, GP Keefe, HW Barkema, J McClure, JA VanLeeuwen, ... Journal of Dairy Science 87 (11), 3770-3777, 2004 | 103 | 2004 |
Seroprevalence of Mycobacterium avium subspecies paratuberculosis, Neospora caninum, Bovine leukemia virus, and Bovine viral diarrhea virus infection among dairy cattle and … HM Scott, O Sorensen, JTY Wu, EYW Chow, K Manninen, ... The Canadian veterinary journal 47 (10), 981, 2006 | 98 | 2006 |
Spatial analysis of land use impact on ground water nitrate concentrations VS Benson, JA VanLeeuwen, J Sanchez, IR Dohoo, GH Somers Journal of environmental quality 35 (2), 421-432, 2006 | 92 | 2006 |
The economics of controlling infectious diseases on dairy farms J Chi, A Weersink, JA VanLeeuwen, GP Keefe Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie …, 2002 | 87 | 2002 |
Seroprevalences of antibodies against bovine leukemia virus, bovine viral diarrhea virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum in beef and … JA VanLeeuwen, A Tiwari, JC Plaizier, TL Whiting The Canadian Veterinary Journal 47 (8), 783, 2006 | 86 | 2006 |
Herd-level risk factors for infection with bovine leukemia virus in Canadian dairy herds O Nekouei, J VanLeeuwen, J Sanchez, D Kelton, A Tiwari, G Keefe Preventive veterinary medicine 119 (3-4), 105-113, 2015 | 85 | 2015 |
Prevalence and distribution of gastrointestinal nematodes on 32 organic and conventional commercial sheep farms in Ontario and Quebec, Canada (2006–2008) A Mederos, S Fernández, J VanLeeuwen, AS Peregrine, D Kelton, ... Veterinary parasitology 170 (3-4), 244-252, 2010 | 82 | 2010 |