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

av Kananub, Suppada, VanLeeuwen, John A., Arunvipas, Pipat
I publikationen Vet World (2018)

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

av Dohoo, Carolyn, Guernsey, Judith Read, Critchley, Kimberley, VanLeeuwen, John
Publicerad 2012

Veterinarians without Borders/Vétérinaires sans frontières-Canada — The first 10 years (2005–2015)

av Waltner-Toews, David, Stiles, Enid, VanLeeuwen, John, Fraser, Erin
I publikationen Can Vet J (2015)

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

av VanLeeuwen, John A., Forsythe, LeeAnn, Tiwari, Ashwani, Chartier, Renee
Publicerad 2005

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

av Kananub, Suppada, Jawjaroensri, Wassana, VanLeeuwen, John, Stryhn, Henrik, Arunvipas, Pipat
I publikationen Vet World (2018)

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

av VanLeeuwen, John A., Tiwari, Ashwani, Plaizier, Jan C., Whiting, Terry L.
Publicerad 2006

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

av Ashley-Martin, Jillian, VanLeeuwen, John, Cribb, Alastair, Andreou, Pantelis, Guernsey, Judith Read
Publicerad 2012

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

av Tiwari, Ashwani, VanLeeuwen, John A., Dohoo, Ian R., Keefe, Greg P., Weersink, Alfons
Publicerad 2008

A cross-sectional study of the welfare of calves raised in smallholder dairy farms in Meru, Kenya, 2017

av Kathambi, Emily. K., Van Leeuwen, John A., Gitau, George K., McKenna, Shawn L.
I publikationen Vet World (2018)

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...

av Okumu, Tequiero Abuom, John, Njenga Munene, Wabacha, James K., Tsuma, Victor, VanLeeuwen, John
I publikationen BMC Vet Res (2019)

Field based pilot-scale drinking water distribution system: Simulation of long hydraulic retention times and microbiological mediated monochloramine decay

av Kulkarni, Veerdhawal, Awad, John, Medlock, Adam, Monis, Paul, Lau, Melody, Drigo, Barbara, van Leeuwen, John
I publikationen MethodsX (2018)

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

av Vallejo-Timarán, Darío, Reyes-Vélez, Julián, VanLeeuwen, John, Maldonado-Estrada, Juan, Astaiza-Martínez, Juan
I publikationen Heliyon (2020)

Johne’s disease in Canada Part II: Disease impacts, risk factors, and control programs for dairy producers

av McKenna, Shawn L.B., Keefe, Greg P., Tiwari, Ashwani, VanLeeuwen, John, Barkema, Herman W.
Publicerad 2006

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

av Richards, Shauna, VanLeeuwen, John, Shepelo, Getrude, Gitau, George Karuoya, Kamunde, Collins, Uehlinger, Fabienne, Wichtel, Jeff
I publikationen Vet World (2015)

Johne’s disease in Canada: Part I: Clinical symptoms, pathophysiology, diagnosis, and prevalence in dairy herds

av Tiwari, Ashwani, VanLeeuwen, John A., McKenna, Shawn L.B., Keefe, Greg P., Barkema, Herman W.
Publicerad 2006

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

av Arunvipas, Pipat, VanLeeuwen, John A., Dohoo, Ian R., Keefe, Greg P., Burton, Shelley A., Lissemore, Kerry D.
Publicerad 2008

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

av Ratanapob, Niorn, VanLeeuwen, John, McKenna, Shawn, Wichtel, Maureen, Rodriguez-Lecompte, Juan C., Menzies, Paula, Wichtel, Jeffrey
I publikationen J Vet Diagn Invest (2018)

The selenium status of dairy herds in Prince Edward Island

av Wichtel, Jeffrey J., Keefe, Gregory P., Van Leeuwen, John A., Spangler, Elizabeth, McNiven, Mary A., Ogilvie, Timothy H.
Publicerad 2004

Seroprevalence of Mycobacterium avium subspecies paratuberculosis, Neospora caninum, Bovine leukemia virus, and Bovine viral diarrhea virus infection among dairy cattle and herds i...

av Scott, H. Morgan, Sorensen, Ole, Wu, John T.Y., Chow, Eva Y.W., Manninen, Ken, VanLeeuwen, John A.
Publicerad 2006

A Population-Based Case-Control Study of Drinking-Water Nitrate and Congenital Anomalies Using Geographic Information Systems (GIS) to Develop Individual-Level Exposure Estimates

av Holtby, Caitlin E., Guernsey, Judith R., Allen, Alexander C., VanLeeuwen, John A., Allen, Victoria M., Gordon, Robert J.
Publicerad 2014