Dairy farmers’ considerations for antimicrobial treatment of clinical mastitis in British Columbia and Alberta, Canada

Ellen de Jong, Inge van der Velden, Anne-Marieke C Smid, Jennifer A Ida, Kristen K Reyher, David F Kelton, Herman Barkema*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

Introduction:
Clinical mastitis (CM) treatment decision-making is a multifaceted process that remains relatively understudied, despite CM being one of the most prevalent diseases on dairy farms worldwide, contributing greatly to the use of antimicrobials in the dairy industry. This study aimed to gain insights into decision-making mechanisms employed by dairy farmers in British Columbia and Alberta, Canada, when dealing with CM.

Methods:
Interviews were held with 15 dairy farmers in the Canadian provinces of British Columbia and Alberta and analyzed using reflexive thematic analysis to develop both the decision-pathway and overarching themes influencing the CM decisions by farmers in this region.

Results and discussion:
The analysis generated a decision-making process that begins with identification and classification of CM, guided by visual characteristics of milk and the udder, available milk production and quality data, presence of systemic signs, and additional diagnostics. Subsequently, CM cases are assessed based on the likelihood of cure, value of the cow, and herd goals to decide whether antimicrobial treatment is desired. Next, a treatment choice is made by evaluating severity and urgency of the case, availability of drugs and timing of the case. Finally, definition of treatment success and progression over time following the treatment decision guides the termination of treatment. Three overarching themes were generated that shape the decision-making process: ‘Personal attributes’, including personal approach and experiential knowledge; ‘Inter-actor dynamics’, such as shared decision-making and dynamics among producers, veterinarians, and milkers; and ‘Moving beyond protocols’, which highlights the dynamic nature of mastitis decision-making. These insights have the potential to inform the development of effective interventions to improve CM antimicrobial use that align with the reality of farming operations within Western Canada, and potentially beyond.
Original languageEnglish
Article number1417958
Number of pages13
JournalFrontiers in Veterinary Science
Volume11
Early online date8 Aug 2024
DOIs
Publication statusE-pub ahead of print - 8 Aug 2024

Bibliographical note

Publisher Copyright:
© 2024 de Jong, van der Velden, Smid, Ida, Reyher, Kelton and Barkema.

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