Antimicrobial susceptibility of mastitis pathogens of dairy cows in Switzerland

Rüegsegger, F.; Ruf, Jeannette; Tschuor, A; Sigrist, Y.; Rosskopf, M.; Hässig, Michael

doi:10.1024/0036-7281/a000635

Cited by 20 publications

(10 citation statements)

References 16 publications

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“…Subclinical IMI caused by CNS are highly prevalent in European dairy herds (Roesch et al, 2007;Sampimon et al, 2009;Rüegsegger et al, 2014), including herds with a high bulk milk SCC (Piepers et al, 2007). With improved control of major mastitis pathogens, minor pathogens, such as CNS, are coming more into focus as causative agents of increased SCC Tomazi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows

Dolder

Borne

Traversari

et al. 2017

Journal of Dairy Science

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Bacteriological status, evaluation of udder symmetry, udder hygiene, and teat end scores of 92 dairy cows were assessed on 3 Swiss dairy farms in a longitudinal 1-yr study to determine risk factors for intramammary infection (IMI) with coagulase-negative staphylococci (CNS) species. Farm visits were performed monthly including sterile quarter milk sampling and udder evaluation of all lactating cows. Milk samples were evaluated for the presence of staphylococci using selective agar plates. Species identification was performed using MALDI-TOF mass spectrometry. Intramammary infection was defined as milk samples having ≥100 cfu per mL of milk according to culture results. Overall, 3,151 quarter samples were included in the statistical analysis. Staphylococcus chromogenes, Staphylococcus haemolyticus, Staphylococcus xylosus, and a Staphylococcus warneri-like species were the 4 most prevalent CNS species found. Hierarchical multivariable logistic regression models were built to evaluate risk factors for species-specific CNS IMI. Risk factors for Staph. chromogenes IMI were presence in herd B, the period from June 2014 to August 2014 and December 2014 to February 2015, and presence of udder edema. For Staph. haemolyticus, the relevant risk factor included coinfection with Staph. xylosus coinfection with other than the above-mentioned CNS species ("others") and the period from June 2014 to November 2014. Coinfection with Staph. haemolyticus and "others," the periods from June 2014 to August 2014 and December 2014 to February 2015, early phase of lactation (1-60 d in milk), and belonging to herd B were significantly associated with Staph. xylosus IMI. Mid and late lactation, coinfection with Staph. xylosus, and the period September 2014 to May 2015 were identified as significant risk factors for Staph. warneri-like IMI. For Staph. chromogenes, 60.6 and 26% of the variance was observed at the quarter and cow level, respectively, whereas for the other investigated species the highest variance was observed at the sample level. The predominant species within herds differed and was most pronounced for the Staph. warneri-like species.

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Section: Introductionmentioning

confidence: 99%

Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows

Dolder

Borne

Traversari

et al. 2017

Journal of Dairy Science

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“…Rüegsegger et al [14] evaluated the antimicrobial resistance of 3954 milk samples isolated from samples collected from animals with subclinical and clinical mastitis diagnoses from various regions of Switzerland between 2011 and 2013. Staphylococcus spp, 598 (15%) coliform, 490(12%) S. aureus and 270(7%) Enterococcus sp.…”

Section: Discussionmentioning

confidence: 99%

Isolation of Major Pathogens from Cattle with Subclinical Mastitis and Determination of Antibiotic Susceptibilities

Parın

2018

APDV

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Bacterial factors of bovine mastitis have two groups according to origin and transmission routes. The primary contagious agents are S. aureus, Streptococcus sp. and E. coli. These factors are spread widely, especially with handling and milking units. The scope of this study was to determine the isolation and antibiotic susceptibility of S. aureus, Streptococcus sp. and E. coli, which are very important for milk production and frequent agents of subclinical mastitis. In our study, 138 samples of dairy cows were taken aseptically from Aydin province with subclinical mastitis case. In conclusion, 102 (18.5%) S. aureus, 21 (3.8%) Streptococcus sp., and 15 (2.7%) E. coli were isolated from the 552 milk samples examined. After PCR with specific primers in the genotypic identification, all isolates were confirmed about bacterial identification. S. aureus, Streptococcus sp., and E. coli isolates were susceptible to antibiotics of amoxicillin-clavulanic acid, oxytetracycline, cefoperazone and cephalexin-kanamycin.

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“…(2012) reporting no penicillin resistance among isolates from mixed European countries, but with 29.8% of isolates being intermediate. An earlier Swiss study found only 7.8% of 1,228 S. uberis isolates resistant to penicillin (Rüegsegger et al., 2014). As this value is also %RI, it appears as if there has been a national temporal increase in resistance over the 6–9 years between isolates were obtained in these two studies.…”

Section: Assessmentmentioning

confidence: 99%

“…In Europe, the Swiss study by Rüegsegger et al. (2014) stood out with high proportions of S. uberis and S. dysgalactiae isolates (36.2% and 39.9%, respectively) being spiramycin resistant. As for other antimicrobials, this study reported %RI, meaning data may not be comparable with those of other studies, especially as a Portuguese study found a massive 30.8% of S. uberis isolates to be spiramycin intermediate (Simoes et al., 2020).…”

Section: Assessmentmentioning

confidence: 99%

Assessment of animal diseases caused by bacteria resistant to antimicrobials: cattle

Nielsen¹,

Bicout²,

Calistri³

et al. 2021

EFS2

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In this opinion, the antimicrobial resistant bacteria responsible for transmissible diseases that constitute a threat to the health of cattle have been assessed. The assessment has been performed following a methodology based on information collected by an extensive literature review and expert judgement. Details of the methodology used for this assessment are explained in a separate opinion. A global state of play on antimicrobial resistance in clinical isolates of Escherichia coli (non‐VTEC), Klebsiella pneumoniae, Staphylococcus aureus, Streptococcus uberis, Streptococcus dysgalactiae, Pasteurella multocida, Mannheimia haemolytica, Histophilus somni, Mycoplasma bovis, Moraxella bovis, Fusobacterium necrophorum and Trueperella pyogenes is provided. Among those bacteria, EFSA identified E. coli and S. aureus with ≥ 66% certainty as being the most relevant antimicrobial resistant bacteria in cattle in the EU based on the available evidence. The animal health impact of these most relevant bacteria, as well as their eligibility for being listed and categorised within the animal health law framework will be assessed in separate scientific opinions.

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Antimicrobial susceptibility of mastitis pathogens of dairy cows in Switzerland

Cited by 20 publications

References 16 publications

Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows

Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows

Isolation of Major Pathogens from Cattle with Subclinical Mastitis and Determination of Antibiotic Susceptibilities

Assessment of animal diseases caused by bacteria resistant to antimicrobials: cattle

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