Genomic characteristics of Staphylococcus aureus strains associated with high within-herd prevalence of intramammary infections in dairy cows

Staphylococcus aureus is one of the most important causes of mastitis in dairy cattle. Based on previous research, Staph. aureus genotypes with different pathogenic and contagious properties can cause intramammary infection (IMI) and coexist in the same herd. Our study aimed to compare Staph. aureus...

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Published in:Journal of dairy science 2015-10, Vol.98 (10), p.6828-6838
Main Authors: Cremonesi, P., Pozzi, F., Raschetti, M., Bignoli, G., Capra, E., Graber, H.U., Vezzoli, F., Piccinini, R., Bertasi, B., Biffani, S., Castiglioni, B., Luini, M.
Format: Article
Language:English
Subjects:
Animals
Cattle
DNA, Bacterial - analysis
Female
genotyping
Italy - epidemiology
mastitis
Mastitis, Bovine - epidemiology
Mastitis, Bovine - microbiology
Prevalence
Sequence Analysis, DNA - veterinary
Staphylococcal Infections - epidemiology
Staphylococcal Infections - microbiology
Staphylococcal Infections - veterinary
Staphylococcus aureus
Staphylococcus aureus - genetics
virulence gene
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Summary:Staphylococcus aureus is one of the most important causes of mastitis in dairy cattle. Based on previous research, Staph. aureus genotypes with different pathogenic and contagious properties can cause intramammary infection (IMI) and coexist in the same herd. Our study aimed to compare Staph. aureus strains from herds that differed in IMI prevalence using different molecular approaches such as ribosomal spacer (RS)-PCR, multilocus sequence typing (MLST), spa typing, ribotyping, pulsed-field gel electrophoresis (PFGE), and multiplex PCR. For this purpose, 31 dairy herds with Staph. aureus IMI were selected, and 16 of these were chosen for a comparison study: the 8 high-prevalence (HP) herds had Staph. aureus IMI prevalence >28% and the 8 low-prevalence (LP) herds had an IMI prevalence
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.2014-9074