J
John R. Campbell
Researcher at Western University College of Veterinary Medicine
Publications - 104
Citations - 1612
John R. Campbell is an academic researcher from Western University College of Veterinary Medicine. The author has contributed to research in topics: Medicine & Beef cattle. The author has an hindex of 23, co-authored 95 publications receiving 1412 citations. Previous affiliations of John R. Campbell include University of Saskatchewan.
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Journal ArticleDOI
Evaluation of client compliance with short-term administration of antimicrobials to dogs.
TL;DR: The combination of reported missed doses and pill counts was a significant predictor of compliance as measured by electronic monitoring, and asking clients about missing doses and performing pill counts are the most practical assessments of compliance in practice.
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Cryptococcus gattii in wildlife of Vancouver Island, British Columbia, Canada.
TL;DR: The relative proportion of nasal colonization in wild mammal species is consistent with findings in domestic animals, suggesting that animals may be good indicators of environmental organisms.
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Effect of bovine viral diarrhea virus in the feedlot
TL;DR: The enormous impact of the virus on the livestock industry has led the Academy of Veterinary Consultants to draft a position statement that resolves that the beef and dairy industries adopt measures to control and target eventual eradicate of BVDV from North America.
Journal Article
The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cows
Ane Nødtvedt,Ian R. Dohoo,Javier Sánchez,Gary Conboy,Luc DesCĵteaux,Greg Keefe,Ken E. Leslie,John R. Campbell +7 more
TL;DR: The epidemiology of bovine gastrointestinal nematodes was investigated through a 1-year longitudinal study in 38 Canadian dairy herds from 4 different provinces, finding that in herds where pasture use was more extensive, the cattle had higher fecal egg counts.
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A longitudinal study of gastrointestinal parasites in Canadian dairy farms. The value of an indirect Ostertagia ostertagi ELISA as a monitoring tool.
Javier Sánchez,Ian R. Dohoo,Ane Nødtvedt,Greg Keefe,Fred Markham,Ken E. Leslie,Luc DesCôteaux,Luc DesCôteaux,John R. Campbell +8 more
TL;DR: A longitudinal study of gastrointestinal parasites in lactating dairy cows was carried out in 38 herds in four provinces of Canada (Prince Edward Island, Quebec, Ontario and Saskatchewan) from September 1999 to October 2000 as mentioned in this paper.