Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms
ABSTRACT: As clinical mastitis (CM) treatments are responsible for a large portion of antimicrobial use on dairy farms, many selective CM treatment protocols have been developed and evaluated against a blanket treatment approach of CM cases. Selective treatment protocols use outcomes of diagnostic t...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Dairy Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0022030223006586 |
| _version_ | 1797356111125282816 |
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| author | Ellen de Jong Kayley D. McCubbin Tamaki Uyama Carmen Brummelhuis Julia Bodaneze David F. Kelton Simon Dufour Javier Sanchez Jean-Philippe Roy Luke C. Heider Daniella Rizzo David Léger Herman W. Barkema |
| author_facet | Ellen de Jong Kayley D. McCubbin Tamaki Uyama Carmen Brummelhuis Julia Bodaneze David F. Kelton Simon Dufour Javier Sanchez Jean-Philippe Roy Luke C. Heider Daniella Rizzo David Léger Herman W. Barkema |
| author_sort | Ellen de Jong |
| collection | DOAJ |
| description | ABSTRACT: As clinical mastitis (CM) treatments are responsible for a large portion of antimicrobial use on dairy farms, many selective CM treatment protocols have been developed and evaluated against a blanket treatment approach of CM cases. Selective treatment protocols use outcomes of diagnostic tests to exclude CM cases from antimicrobial treatment when they are unlikely to benefit. To tailor interventions to increase uptake of selective treatment strategies, a comprehension of current on-farm treatment practices and factors affecting treatment decisions is vital. Two questionnaires were conducted among 142 farms across 5 provinces participating in the Canadian Dairy Network for Antimicrobial Stewardship and Resistance in this cross-sectional study. Self-reported adoption of selective CM treatments by dairy farmers was 64%, with median of 82% of cows treated in those herds using selective treatment. Using logistic regression models, the odds to implement a selective CM treatment protocol increased with a decreasing average cow somatic cell count. No other associations were identified between use of a selective CM treatment protocol and farm characteristics (herd size, CM incidence, province, milking system, and housing system). Three subsets of farmers making cow-level CM treatment decisions were identified using a cluster analysis approach: those who based decisions almost exclusively on severity of clinical signs, those who used various udder health indicators, and farmers who also incorporated more general cow information such as production, age, and genetics. When somatic cell count was considered, the median threshold used for treating was >300,000 cells/mL at the last Dairy Herd Improvement test. Various thresholds were present among those considering CM case history. Veterinary laboratories were most frequently used for bacteriological testing. Test results were used to start, change, and stop treatments. Regardless of protocol, reasons for antimicrobial treatment withheld included cow being on a cull list, having a chronic intramammary infection, or being at end of lactation (i.e., close to dry off). If clinical signs persisted after treatment, farmers indicated that they would ask veterinarians for advice, stop treatment, or continue with the same or different antibiotics. Results of this study can be used to design interventions targeting judicious mastitis-related antimicrobial use, and aid discussions between veterinarians and dairy producers regarding CM-related antimicrobial use. |
| first_indexed | 2024-03-08T14:22:00Z |
| format | Article |
| id | doaj.art-32857aa090c84488ba5a786316b864cc |
| institution | Directory Open Access Journal |
| issn | 0022-0302 |
| language | English |
| last_indexed | 2024-03-08T14:22:00Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Dairy Science |
| spelling | doaj.art-32857aa090c84488ba5a786316b864cc2024-01-14T05:34:52ZengElsevierJournal of Dairy Science0022-03022024-01-011071463475Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farmsEllen de Jong0Kayley D. McCubbin1Tamaki Uyama2Carmen Brummelhuis3Julia Bodaneze4David F. Kelton5Simon Dufour6Javier Sanchez7Jean-Philippe Roy8Luke C. Heider9Daniella Rizzo10David Léger11Herman W. Barkema12Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada, T2N 4N1; One Health at UCalgary, University of Calgary, Calgary, AB, Canada, T2N 4N1Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada, T2N 4N1; One Health at UCalgary, University of Calgary, Calgary, AB, Canada, T2N 4N1Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada, N1G 2W1Faculty of Veterinary Medicine, Utrecht University, 3584CS Utrecht, the NetherlandsFaculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada, T2N 4N1; One Health at UCalgary, University of Calgary, Calgary, AB, Canada, T2N 4N1Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada, N1G 2W1Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Canada, J2S 2M2Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, Canada, C1A 4P3Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Canada, J2S 2M2Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, Canada, C1A 4P3Public Health Agency of Canada, Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Guelph, ON, Canada, N1H 8J1Public Health Agency of Canada, Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Guelph, ON, Canada, N1H 8J1Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada, T2N 4N1; One Health at UCalgary, University of Calgary, Calgary, AB, Canada, T2N 4N1; Corresponding authorABSTRACT: As clinical mastitis (CM) treatments are responsible for a large portion of antimicrobial use on dairy farms, many selective CM treatment protocols have been developed and evaluated against a blanket treatment approach of CM cases. Selective treatment protocols use outcomes of diagnostic tests to exclude CM cases from antimicrobial treatment when they are unlikely to benefit. To tailor interventions to increase uptake of selective treatment strategies, a comprehension of current on-farm treatment practices and factors affecting treatment decisions is vital. Two questionnaires were conducted among 142 farms across 5 provinces participating in the Canadian Dairy Network for Antimicrobial Stewardship and Resistance in this cross-sectional study. Self-reported adoption of selective CM treatments by dairy farmers was 64%, with median of 82% of cows treated in those herds using selective treatment. Using logistic regression models, the odds to implement a selective CM treatment protocol increased with a decreasing average cow somatic cell count. No other associations were identified between use of a selective CM treatment protocol and farm characteristics (herd size, CM incidence, province, milking system, and housing system). Three subsets of farmers making cow-level CM treatment decisions were identified using a cluster analysis approach: those who based decisions almost exclusively on severity of clinical signs, those who used various udder health indicators, and farmers who also incorporated more general cow information such as production, age, and genetics. When somatic cell count was considered, the median threshold used for treating was >300,000 cells/mL at the last Dairy Herd Improvement test. Various thresholds were present among those considering CM case history. Veterinary laboratories were most frequently used for bacteriological testing. Test results were used to start, change, and stop treatments. Regardless of protocol, reasons for antimicrobial treatment withheld included cow being on a cull list, having a chronic intramammary infection, or being at end of lactation (i.e., close to dry off). If clinical signs persisted after treatment, farmers indicated that they would ask veterinarians for advice, stop treatment, or continue with the same or different antibiotics. Results of this study can be used to design interventions targeting judicious mastitis-related antimicrobial use, and aid discussions between veterinarians and dairy producers regarding CM-related antimicrobial use.http://www.sciencedirect.com/science/article/pii/S0022030223006586antimicrobial useantimicrobial stewardshipdecision makingprotocolbovine mastitis |
| spellingShingle | Ellen de Jong Kayley D. McCubbin Tamaki Uyama Carmen Brummelhuis Julia Bodaneze David F. Kelton Simon Dufour Javier Sanchez Jean-Philippe Roy Luke C. Heider Daniella Rizzo David Léger Herman W. Barkema Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms Journal of Dairy Science antimicrobial use antimicrobial stewardship decision making protocol bovine mastitis |
| title | Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms |
| title_full | Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms |
| title_fullStr | Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms |
| title_full_unstemmed | Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms |
| title_short | Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms |
| title_sort | adoption and decision factors regarding selective treatment of clinical mastitis on canadian dairy farms |
| topic | antimicrobial use antimicrobial stewardship decision making protocol bovine mastitis |
| url | http://www.sciencedirect.com/science/article/pii/S0022030223006586 |
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