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Eugene D. Janzen

Eugene D. Janzen

D-Index & Metrics

Animal Science and Veterinary

D-Index
33
Citations
3916
World Ranking
2012
National Ranking
128

Overview

Eugene D. Janzen is affiliated with the University of Calgary in Canada and has a research focus primarily in Agricultural and Biological Sciences and Veterinary fields. Their work spans several interdisciplinary areas, notably Small Animals, Animal Science and Zoology, and Agronomy and Crop Science.

Their research topics cover a range of subjects related to animal health, behavior, and production including:

  • Animal Behavior and Welfare Studies
  • Meat and Animal Product Quality
  • Animal Disease Management and Epidemiology
  • Animal Nutrition and Physiology
  • Effects of Environmental Stressors on Livestock
  • Veterinary Pharmacology and Anesthesia

Janzen has coauthored with several frequent collaborators, such as Sònia Martí, K. S. Schwartzkopf-Genswein, Edmond A. Pajor, Daniela M Meléndez, and Murray Jelinski, reflecting a broad network within their research community.

Their publication record includes papers in venues like the Canadian Journal of Animal Science, the Journal of Dairy Science, and the American Association of Bovine Practitioners Conference Proceedings. Notable recent papers are:

  • A prospective longitudinal study of risk factors associated with cattle lameness in southern Alberta feedlots (2021), Canadian Journal of Animal Science
  • Characterizing the diagnostic sensitivity and specificity of pain biomarkers in cattle using receiver operating characteristic curves (2022), Journal of Dairy Science
  • What we know that just ain't so (2020), American Association of Bovine Practitioners Conference Proceedings

Their work contributes to understanding animal welfare, particularly in cattle, by examining risk factors for conditions like lameness and assessing diagnostic tools such as pain biomarkers. This research integrates epidemiological approaches with animal science to address health and productivity challenges in livestock systems.

Janzen's research is situated at the intersection of animal health management and production science, with a consistent emphasis on welfare and disease epidemiology. Their collaboration across multiple coauthors and publication venues highlights engagement with both clinical and applied aspects of veterinary and agricultural sciences.

Best Publications

  • Mycoplasma bovis infections in cattle

    F. P. Maunsell;A. R. Woolums;D. Francoz;R. F. Rosenbusch

  • Microbiological and histopathological findings in cases of fatal bovine respiratory disease of feedlot cattle in Western Canada.

    Calvin W Booker;Sameeh M Abutarbush;Paul S Morley;G Kee Jim

  • Coinfection with bovine viral diarrhea virus and Mycoplasma bovis in feedlot cattle with chronic pneumonia.

    Farshid M. Shahriar;Edward G. Clark;Eugene Janzen;Keith West

  • Diagnosis of Persistent Bovine Viral Diarrhea Virus Infection by Immunohistochemical Staining of Formalin-Fixed Skin Biopsy Specimens:

    Brad L. Njaa;Edward G. Clark;Eugene Janzen;John A. Ellis

  • The Haemophilus somnus disease complex (Hemophilosis): A review.

    Frederick W. Harris;Eugene D. Janzen

  • Pain mitigation after band castration of beef calves and its effects on performance, behavior, Escherichia coli, and salivary cortisol.

    L. A. González;K. S. Schwartzkopf-Genswein;N. A. Caulkett;E. Janzen

  • The immunohistochemical detection of Mycoplasma bovis and bovine viral diarrhea virus in tissues of feedlot cattle with chronic, unresponsive respiratory disease and/or arthritis.

    D M Haines;K M Martin;E G Clark;G K Jim

  • A review of morbidity and mortality rates and disease occurrence in north american feedlot cattle.

    Andrew P. Kelly;Eugene D. Janzen

  • Performance, survival, necropsy, and virological findings from calves persistently infected with the bovine viral diarrhea virus originating from a single Saskatchewan beef herd.

    L F Taylor;E D Janzen;J A Ellis;J V van den Hurk

  • A comparison of the clinical field efficacy and safety of florfenicol and tilmicosin for the treatment of undifferentiated bovine respiratory disease of cattle in western Canada.

    B R Hoar;M D Jelinski;C S Ribble;E D Janzen

  • Effect of time of year, weather, and the pattern of auction market sales on fatal fibrinous pneumonia (shipping fever) in calves in a large feedlot in Alberta (1985-1988).

    C S Ribble;A H Meek;E D Janzen;P T Guichon

  • Estrus synchronization and pregnancy rates in beef cattle given CIDR-B, prostaglandin and estradiol, or GnRH.

    M F Martínez;J P Kastelic;G P Adams;E Janzen

  • Efficacy of vaccination against Fusobacterium necrophorum infection for control of liver abscesses and footrot in feedlot cattle in western Canada.

    Sylvia L. Checkley;Eugene D. Janzen;John R. Campbell;John J. McKinnon

  • Outbreak of abortion associated with Neospora caninum infection in a beef herd.

    Waldner Cl;Janzen Ed;Henderson J;Haines Dm

  • EFFICACY AND STRESS OF CHEMICAL VERSUS SURGICAL CASTRATION OF CATTLE

    Unknown

  • Polioencephalomalacia in cattle consuming water with elevated sodium sulfate levels: A herd investigation.

    Heidi Hamlen;Edward Clark;Eugene Janzen

  • The prevalence of bovine viral diarrhea virus infection in a population of feedlot calves in western Canada.

    L F Taylor;J Van Donkersgoed;E J Dubovi;R J Harland

  • Prophylactic tilmicosin medication of feedlot calves at arrival.

    Fritz J. Schumann;Eugene D. Janzen;John J. McKinnon

  • The effect of age and method of castration on plasma cortisol in beef calves

    B. D. King;R. D. H. Cohen;C. L. Guenther;E. D. Janzen

  • Associations between antimicrobial use and the prevalence of antimicrobial resistance in fecal Escherichia coli from feedlot cattle in western Canada.

    Sylvia L. Checkley;John R. Campbell;Manuel Chirino-Trejo;Eugene D. Janzen

  • Effect of anti-gonadotropin-releasing factor vaccine and band castration on indicators of welfare in beef cattle.

    S. Marti;M. Devant;S. Amatayakul-Chantler;J. A. Jackson

  • Effect of band and knife castration of beef calves on welfare indicators of pain at three relevant industry ages: I. Acute pain.

    D. M. Meléndez;S. Marti;E. A. Pajor;D. Moya

  • Epidemiological features of calf mortality due to hemophilosis in a large feedlot.

    J. van Donkersgoed;E. D. Janzen;R. J. Harland

  • LOSSES OVER A 2-YEAR PERIOD ASSOCIATED WITH FETAL INFECTION WITH THE BOVINE VIRAL DIARRHEA VIRUS IN A BEEF COW-CALF HERD IN SASKATCHEWAN

    L F Taylor;E D Janzen;J Van Donkersgoed

  • Interstitial pneumonia in feedlot cattle: concurrent lesions and lack of immunohistochemical evidence for bovine respiratory syncytial virus infection.

    Steven D. Sorden;Robert W. Kerr;Eugene D. Janzen

  • Effects of castration method and frequency of intramuscular injections of ketoprofen on behavioral and physiological indicators of pain in beef cattle.

    D. Moya;L. A. González;E. Janzen;N. A. Caulkett

  • Associations between oil- and gas-well sites, processing facilities, flaring, and beef cattle reproduction and calf mortality in western Canada.

    C.L Waldner;C.S Ribble;E.D Janzen;J.R Campbell

Frequent Co-Authors

Karen S. Schwartzkopf-Genswein
Karen S. Schwartzkopf-Genswein Agriculture and Agriculture-Food Canada
Edmond A. Pajor
Edmond A. Pajor University of Calgary
John R. Campbell
John R. Campbell University of Saskatchewan
Cheryl L. Waldner
Cheryl L. Waldner University of Saskatchewan
Luciano A. González
Luciano A. González University of Sydney
John J. McKinnon
John J. McKinnon University of Saskatchewan
Karin Orsel
Karin Orsel University of Calgary
John P. Kastelic
John P. Kastelic University of Calgary
Jan K. Shearer
Jan K. Shearer Iowa State University
Joseph M. Stookey
Joseph M. Stookey Western University of Health Sciences

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