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Bovine subclinical mastitis caused by different types of coagulase-negative staphylococci
Örebro universitet, Restaurang- och hotellhögskolan - Grythytte akademi.ORCID-id: 0000-0003-0154-9452
2009 (engelsk)Inngår i: Journal of Dairy Science, ISSN 0022-0302, E-ISSN 1525-3198, Vol. 92, nr 10, s. 4962-4970Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Subclinical mastitis caused by intramammary infections (IMI) with coagulase-negative staphylococci (CNS) is common in dairy cows and may cause herd problems. Control of CNS mastitis is complicated by the fact that CNS contain a large number of different species. The aim of the study was to investigate the epidemiology of different CNS species in dairy herds with problems caused by subclinical CNS mastitis. In 11 herds, udder quarter samples were taken twice 1 mo apart, and CNS isolates were identified to the species level by biochemical methods. The ability of different CNS species to induce a persistent infection, and their associations with milk production, cow milk somatic cell count, lactation number, and month of lactation in cows with subclinical mastitis were studied. Persistent IMI were common in quarters infected with Staphylococcus chromogenes, Staphylococcus epidermidis, and Staphylococcus simulans. The results did not indicate differences between these CNS species in their association with daily milk production, cow milk somatic cell count, and month of lactation in cows with subclinical mastitis. In cows with subclinical mastitis, S. epidermidis IMI were mainly found in multiparous cows, whereas S. chromogenes IMI were mainly found in primiparous cows.

sted, utgiver, år, opplag, sider
Amsterdam: American Dairy Science Association , 2009. Vol. 92, nr 10, s. 4962-4970
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URN: urn:nbn:se:oru:diva-8758DOI: 10.3168/jds.2009-2184ISI: 000269927500027PubMedID: 19762813Scopus ID: 2-s2.0-70349911879OAI: oai:DiVA.org:oru-8758DiVA, id: diva2:280905
Tilgjengelig fra: 2009-12-12 Laget: 2009-12-12 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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