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

por Kananub, Suppada, VanLeeuwen, John A., Arunvipas, Pipat
Publicado no 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

por Dohoo, Carolyn, Guernsey, Judith Read, Critchley, Kimberley, VanLeeuwen, John
Publicado em 2012

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

por Waltner-Toews, David, Stiles, Enid, VanLeeuwen, John, Fraser, Erin
Publicado no 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...

por VanLeeuwen, John A., Forsythe, LeeAnn, Tiwari, Ashwani, Chartier, Renee
Publicado em 2005

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

por Kananub, Suppada, Jawjaroensri, Wassana, VanLeeuwen, John, Stryhn, Henrik, Arunvipas, Pipat
Publicado no 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...

por VanLeeuwen, John A., Tiwari, Ashwani, Plaizier, Jan C., Whiting, Terry L.
Publicado em 2006

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

por Ashley-Martin, Jillian, VanLeeuwen, John, Cribb, Alastair, Andreou, Pantelis, Guernsey, Judith Read
Publicado em 2012

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

por Tiwari, Ashwani, VanLeeuwen, John A., Dohoo, Ian R., Keefe, Greg P., Weersink, Alfons
Publicado em 2008

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

por Kathambi, Emily. K., Van Leeuwen, John A., Gitau, George K., McKenna, Shawn L.
Publicado no 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...

por Okumu, Tequiero Abuom, John, Njenga Munene, Wabacha, James K., Tsuma, Victor, VanLeeuwen, John
Publicado no BMC Vet Res (2019)

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

por Kulkarni, Veerdhawal, Awad, John, Medlock, Adam, Monis, Paul, Lau, Melody, Drigo, Barbara, van Leeuwen, John
Publicado no MethodsX (2018)

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

por Vallejo-Timarán, Darío, Reyes-Vélez, Julián, VanLeeuwen, John, Maldonado-Estrada, Juan, Astaiza-Martínez, Juan
Publicado no Heliyon (2020)

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

por McKenna, Shawn L.B., Keefe, Greg P., Tiwari, Ashwani, VanLeeuwen, John, Barkema, Herman W.
Publicado em 2006

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

por Richards, Shauna, VanLeeuwen, John, Shepelo, Getrude, Gitau, George Karuoya, Kamunde, Collins, Uehlinger, Fabienne, Wichtel, Jeff
Publicado no Vet World (2015)

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

por Tiwari, Ashwani, VanLeeuwen, John A., McKenna, Shawn L.B., Keefe, Greg P., Barkema, Herman W.
Publicado em 2006

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

por Arunvipas, Pipat, VanLeeuwen, John A., Dohoo, Ian R., Keefe, Greg P., Burton, Shelley A., Lissemore, Kerry D.
Publicado em 2008

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

por Ratanapob, Niorn, VanLeeuwen, John, McKenna, Shawn, Wichtel, Maureen, Rodriguez-Lecompte, Juan C., Menzies, Paula, Wichtel, Jeffrey
Publicado no J Vet Diagn Invest (2018)

The selenium status of dairy herds in Prince Edward Island

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

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

por Scott, H. Morgan, Sorensen, Ole, Wu, John T.Y., Chow, Eva Y.W., Manninen, Ken, VanLeeuwen, John A.
Publicado em 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

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