Nocardia spp. are an uncommon cause of mastitis, and outbreaks have typically been reported in dairy farms with poor hygienic and management conditions. The outbreak described herein involved a dairy farm with 43 lactating cows that, after a long period with low bulk milk somatic cell counts (<180,000 cells/mL), experienced an increasing incidence of clinical mastitis with bulk milk somatic cell counts greater than 300,000 cells/mL. Fifteen mastitic quarters milk samples from 9 dairy cows were found to be infected by a member of the genus Nocardia, as identified on the basis of se-lected phenotypic and chemotaxonomic characteristics. The isolates were confirmed as Nocardia neocaledo-niensis by 16S rDNA gene sequencing. Average quarter milk somatic cell count for infected udders was 863,057 cells/mL, significantly greater than the average value in noninfected quarters (189,710 cells/mL).
|Titolo:||Outbreak of Nocardia neocaledoniensis mastitis in a Italian dairy herd [short communication]|
|Settore Scientifico Disciplinare:||Settore VET/03 - Patologia Generale e Anatomia Patologica Veterinaria|
Settore VET/05 - Malattie Infettive degli Animali Domestici
|Data di pubblicazione:||gen-2008|
|Digital Object Identifier (DOI):||10.3168/jds.2007-0477|
|Appare nelle tipologie:||01 - Articolo su periodico|