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Please use this identifier to cite or link to this item: http://hdl.handle.net/11019/486

Title: Pathogen profile of clinical mastitis in Irish milk-recording herds reveals a complex aetiology
Authors: Keane, Orla M
Budd, Kathleen E
Flynn, James
McCoy, Finola
Keywords: Clinical mastitis
Pathogen
Bacterial isolates
Cows
Issue Date: 21-May-2013
Publisher: British Veterinary Association
Citation: Keane OM, Budd KE, Flynn J and McCoy F. Pathogen profile of clinical mastitis in Irish milk-recording herds reveals a complex aetiology. Veterinary Record, 2013, 173:17 doi:10.1136/vr.101308
Series/Report no.: Veterinary Record;vol 173
Abstract: Effective mastitis control requires knowledge of the predominant pathogen challenges on the farm. In order to quantify this challenge, the aetiological agents associated with clinical mastitis in 30 milk-recording dairy herds in Ireland over a complete lactation were investigated. Standard bacteriology was performed on 630 pretreatment quarter milk samples, of which 56 per cent were culture-positive, 42 per cent culture-negative and 2 per cent contaminated. Two micro-organisms were isolated from almost 5 per cent of the culture-positive samples. The bacteria isolated were Staphylococcus aureus (23 per cent), Streptococcus uberis (17 per cent), Escherichia coli (9 per cent), Streptococcus species (6 per cent), coagulase-negative Staphylococci (4 per cent) and other species (1 per cent). A wide variety of bacterial species were associated with clinical mastitis, with S aureus the most prevalent pathogen overall, followed by S uberis. However, the bacterial challenges varied widely from farm to farm. In comparison with previous reports, in the present study, the contagious pathogens S aureus and Streptococcus agalactiae were less commonly associated with clinical mastitis, whereas, the environmental pathogens S uberis and E coli were found more commonly associated with clinical mastitis. While S aureus remains the pathogen most commonly associated with intramammary infection in these herds, environmental pathogens, such as S uberis and E coli also present a considerable challenge.
Description: peer-reviewed
URI: http://hdl.handle.net/11019/486
http://dx.doi.org/10.1136/vr.101308
http://veterinaryrecord.bmj.com/content/173/1/17.abstract
ISSN: 0042-4900
Appears in Collections:Animal & Bioscience

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