Peer-reviewed veterinary case report
Molecular characterization of Prototheca strains isolated from Italian dairy herds.
- Journal:
- Journal of dairy science
- Year:
- 2010
- Authors:
- Ricchi, M et al.
- Affiliation:
- Istituto Zooprofilattico Sperimentale of Lombardia and Emilia Romagna · Italy
Abstract
One hundred sixty-one Prototheca spp. strains isolated from composite milk and barn-surrounding environmental samples (bedding, feces, drinking, or washing water, surface swabs) of 24 Italian dairy herds were characterized by genotype-specific PCR analysis. Overall, 97.2% of strains isolated from composite milk samples were characterized as Prototheca zopfii genotype 2, confirming its role as the main mastitis pathogen, whereas Prototheca blaschkeae was only sporadically isolated (2.8%). Regarding environmental sampling, 84.9% of isolates belonged to P. zopfii genotype 2, 13.2% to P. blaschkeae, and 1.9% to P. zopfii genotype 1. The data herein contradict previous hypotheses about the supposed exclusive role of P. zopfii genotype 2 as the causative agent of protothecal mastitis and, on the contrary, confirm the hypothesis that such pathology could be caused by P. blaschkeae in a few instances.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/20854996/