The role of teat skin contamination in the epidemiology of staphylococcus aureus intramammary infections
Articolo
Data di Pubblicazione:
2009
Citazione:
The role of teat skin contamination in the epidemiology of staphylococcus aureus intramammary infections / R. Piccinini, L. Cesaris, V. Daprà, V. Borromeo, C. Picozzi, C. Secchi, A. Zecconi. - In: THE JOURNAL OF DAIRY RESEARCH. - ISSN 0022-0299. - 76:1(2009), pp. 36-41.
Abstract:
Knowledge of the epidemiological pattern and the potential sources of infections is important to control Staphylococcus aureus in dairy herds. This paper reports the results of a study applying both pulse field gel electrophoresis (PGFE) and the assessment of a selected number of virulence genes to investigate the role of teat skin on Staph. aureus transmission among cows and on the contamination of milk. Overall 61 isolates were considered, 23 from teat skin, 33 from milk samples and 5 from curd samples. Teat swabs were taken in five herds, but in only three of them could Staph. aureus be isolated. Curd was sampled in three herds, but Staph. aureus could be isolated in only two herds. The distribution of isolates among herds confirmed the presence of herd-specific Staph. aureus strain in most of the herds. The same pattern was observed in teat skin samples, in quarter milk samples, and in the curd samples. Our findings are consistent with other studies showing the role of teat skin as a potential reservoir. Moreover, Staph. aureus was isolated from teat skin of confirmed Staph. aureus-negative cows that were segregated from infected ones. Our findings also suggest that some strains have higher chances to survive on teat skin and therefore to increase the risk for contamination of milk and milk products due to the persistence of intramammary infections.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Intramammary infections; Molecular epidemiology; PFGE; Staphylococcus aureus; Teat skin; Animals; Cattle; DNA Fingerprinting; Electrophoresis, Gel, Pulsed-Field; Female; Italy; Mammary Glands, Animal; Mastitis, Bovine; Milk; Skin; Staphylococcal Infections; Staphylococcus aureus; Animal Science and Zoology; Food Science
Elenco autori:
R. Piccinini, L. Cesaris, V. Daprà, V. Borromeo, C. Picozzi, C. Secchi, A. Zecconi
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