ArticleBMC veterinary research2024
Identification of Enterococcus spp. by MALDI-TOF mass spectrometry isolated from clinical mastitis and bulk tank milk samples.
Article in BMC veterinary research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Genomic Insights Into Antimicrobial Resistance and Virulence of Enterococcus avium Strains From Bovine Mastitis in Some Selected Dairy Farms of Bangladesh.Veterinary medicine and science · 2026Article
- A pilot study on MALDI-TOF MS-based discrimination of Enterococcus faecalis and Lactococcus spp. isolated from bovine milk samples.World journal of microbiology & biotechnology · 2025Article
- Comprehensive Prevention and Control of Mastitis in Dairy Cows: From Etiology to Prevention.Veterinary sciences · 2025Review
- Enterococcus species identified by MALDI-TOF MS in milk from dairy cow mastitis cases and herd surveys.Veterinary research communications · 2025Article
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Authors and funding
15 authors.
Funding
Abstract
backgroundThroughout a three-year study period, 1,577 bovine clinical mastitis samples and 302 bulk tank samples were analyzed from ten Brazilian dairy herds. Enterococcus spp. was isolated and identified in 93 (5.9%) clinical mastitis samples. In addition, 258 Enterococcus spp. were isolated from the bulk tank samples of the same herds. The identification of Enterococcus spp. isolated from bulk tanks and milk samples of clinical mastitis were accomplished by phenotypic characteristics and confirmed by MALDI-TOF Mass Spectrometry (MS). Fisher test was performed to verify the difference between bulk tanks and mastitis samples.
resultsThe following species were identified from clinical mastitis: E. saccharolyticus (62.4%), E. faecalis (19.4%), E. faecium (15.1%), E. hirae (1.1%), E. mundtii (1.1%), E. durans (1.1%). Furthermore, from 258 bulk tank milk samples, eight enterococci species were isolated: E. faecalis (67.8%), E. hirae (15.1%), E. faecium (4.6%), E. saccharolyticus (4.6%), E. mundtii (3.1%), E. caseliflavus ( 2.7%), E. durans (1.2%), E. galinarum (0.8%).
conclusionsThe difference in species predominance in bulk tank samples (67.8% of E. faecalis) and clinical mastitis (62.4% of E. saccharolyticus) was unexpected and caught our attention. Although Enterococcus spp. are traditionally classified as an environmental mastitis agent, in the present study, E. saccharolyticus behaved as a contagious agent of mastitis, which consequently changed the control patterns to be implemented.
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