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Non-antimicrobial approaches at drying-off for treating and preventing intramammary infections in dairy cows. Part 1. Meta-analyses of efficacy of using an internal teat sealant without a concomitant antimicrobial treatment

Published online by Cambridge University Press:  26 November 2019

Simon Dufour ,
Vincent Wellemans ,
Jean-Philippe Roy ,
Pierre Lacasse ,
Alfredo Ordonez-Iturriaga  and
David Francoz
Simon Dufour*
Affiliation:
Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada Canadian Bovine Mastitis and Milk Quality Research Network, St-Hyacinthe, QC, J2S 2M2, Canada
Vincent Wellemans
Affiliation:
Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada
Jean-Philippe Roy
Affiliation:
Canadian Bovine Mastitis and Milk Quality Research Network, St-Hyacinthe, QC, J2S 2M2, Canada Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada
Pierre Lacasse
Affiliation:
Canadian Bovine Mastitis and Milk Quality Research Network, St-Hyacinthe, QC, J2S 2M2, Canada Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, 2000 Collège, Sherbrooke, QC, J1M 0C8, Canada
Alfredo Ordonez-Iturriaga
Affiliation:
Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada
David Francoz
Affiliation:
Département de Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada
*
Author for correspondence: Simon Dufour, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, J2S 2M2, Canada. E-mail: simon.dufour@umontreal.ca
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Abstract

Use of antimicrobial approaches at drying-off for preventing new intramammary infections (IMI) during the dry period in dairy cows could be replaced by non-antimicrobial approaches. Such approaches would be of interest not only for organic but also for conventional dairy producers. The objective of the current review was to quantify the effect of non-antimicrobial internal teat sealant (ITS)-based approaches at drying-off for treating and preventing IMI, when compared with no treatment or with an antimicrobial-based approach. The protocol for this review was published before initiating the review. A total of 18 trials from 16 articles could be used to investigate the effect of an ITS-based approach. With the available results, we conclude with a high level of confidence that non-antimicrobial ITS-based dry-off approaches are efficient for preventing new IMI during the dry period when compared with no treatment, and would reduce risk of new IMI by 52%. Moreover, we are relatively confident that a bismuth subnitrate-based ITS performed better than an antimicrobial for preventing new IMI during the dry period (a risk reduction of 23%). Similarly, we are relatively confident that an ITS-based approach would only slightly or not at all reduce the prevalence of IMI at calving compared with untreated quarters.

Keywords

Dairy cowsdry-off treatmentefficacyinternal teat sealantmeta-analysis
Type
Systematic Review
Information
Animal Health Research Reviews , Volume 20 , Issue 1 , June 2019 , pp. 86 - 97
Copyright
Copyright © Cambridge University Press 2019

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