Implementation of recommended mastitis prevention ...

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Paper title Implementation of recommended mastitis prevention management practices and the herd level prevalence of contagious mastitis pathogens on Canadian dairy farms
Paper author(s) R. G. M. O. Riekerink, H. W. Barkema, D. T. Scholl, D. F. Kelton, Gregory P. Keefe
Proceedings title Proceedings of the 4th IDF International Mastitis Conference, Maastricht, The Netherlands, 12-15 June 2005
Date 2005
Conference H., Hogeveen
Abstract Although research and extension programs have stressed implementation of certain mastitis management practices, the level of compliance is often undocumented. Additionally, herd-level prevalence of Staphylococcus aureus and Streptococcus agalactiae has been estimated in the past in Canada, but studies were limited geographically. The objectives of this study were, therefore, to estimate the level of implementation of mastitis prevention management practices on Canadian dairy farms and the herd-level prevalence of contagious mastitis pathogens. Also, the association between herd-level pathogen-specific prevalence, application of management practices and presence of risk factors was studied. A total of 291 randomly selected farms enrolled in the study submitted bulk milk samples. Of these farms, 262 completed a questionnaire on the adoption of mastitis management practices recommended by the NMC. Herd-level prevalence of Staph. aureus and Strep. agalactiae was 48.4 and 2.5%, respectively. Of the farms 95% applied post-milking teat disinfection, 73% treated all cows with antibiotics at drying off, 58% milked clinical mastitis cows last or with a separate unit, and 52% of farmers did not record new cases of mastitis on permanent records. Prevalence of Staph. aureus was in agreement with earlier studies, but prevalence of Strep. agalactiae was lower than expected. Many producers have adopted good udder health management practices, but some practices need to be promoted further..

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