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Statements

Subject Item
n2:RIV%2F00027162%3A_____%2F13%3A%230001052%21RIV14-MZE-00027162
rdf:type
skos:Concept n13:Vysledek
dcterms:description
A total of 669 individual cow milk samples originating from asymptomatic cows from 16 dairy farms were examined for the presence of microorganisms with the potential to cause mastitis. Coagulase-negative staphylococci clearly predominated (53.5% positive samples) followed by streptococci and enterococci (both occurring in 16.1% samples). Among streptococci, so-called mastitis streptococci (S. uberis, S. dysgalactiae and S. agalactiae) prevailed (11.7% positive samples). Enterobacteriaceae were found in 10.0% samples, most of which (6.6% samples) were positive for Escherichia coli. Yeasts (mainly Candida spp.) were found in 8.2% samples. One of the major mastitis pathogens, Staphylococcus aureus subsp. aureus, was isolated from 9.0% of samples. S. aureus isolates were further characterised in terms of their capability to form biofilm, antimicrobial susceptibility and clonality (PFGE). All S. aureus isolates were capable of biofilm formation and were generally susceptible to the majority of tested antibiotics. The exception was ampicillin, resistance to which was observed in 27.7% isolates. Therefore, the relatively frequent occurrence of S. aureus could be attributed to persistent intramammary infections due to biofilm formation rather than low efficacy of particular antibiotics. PFGE analysis revealed clonal spread of certain S. aureus isolates within and between farms indicating that certain lineages of S. aureus mastitis strains are particularly successful. A total of 669 individual cow milk samples originating from asymptomatic cows from 16 dairy farms were examined for the presence of microorganisms with the potential to cause mastitis. Coagulase-negative staphylococci clearly predominated (53.5% positive samples) followed by streptococci and enterococci (both occurring in 16.1% samples). Among streptococci, so-called mastitis streptococci (S. uberis, S. dysgalactiae and S. agalactiae) prevailed (11.7% positive samples). Enterobacteriaceae were found in 10.0% samples, most of which (6.6% samples) were positive for Escherichia coli. Yeasts (mainly Candida spp.) were found in 8.2% samples. One of the major mastitis pathogens, Staphylococcus aureus subsp. aureus, was isolated from 9.0% of samples. S. aureus isolates were further characterised in terms of their capability to form biofilm, antimicrobial susceptibility and clonality (PFGE). All S. aureus isolates were capable of biofilm formation and were generally susceptible to the majority of tested antibiotics. The exception was ampicillin, resistance to which was observed in 27.7% isolates. Therefore, the relatively frequent occurrence of S. aureus could be attributed to persistent intramammary infections due to biofilm formation rather than low efficacy of particular antibiotics. PFGE analysis revealed clonal spread of certain S. aureus isolates within and between farms indicating that certain lineages of S. aureus mastitis strains are particularly successful.
dcterms:title
Prevalence of mastitis pathogens in milk from clinically healthy cows Prevalence of mastitis pathogens in milk from clinically healthy cows
skos:prefLabel
Prevalence of mastitis pathogens in milk from clinically healthy cows Prevalence of mastitis pathogens in milk from clinically healthy cows
skos:notation
RIV/00027162:_____/13:#0001052!RIV14-MZE-00027162
n13:predkladatel
n17:ico%3A00027162
n4:aktivita
n8:Z n8:P
n4:aktivity
P(ED0006/01/01), P(QJ1210301), Z(MZE0002716202)
n4:cisloPeriodika
11
n4:dodaniDat
n16:2014
n4:domaciTvurceVysledku
n7:5202272 Maroševič, Durdica n7:2050986 n7:5780349 n7:5144523 n7:2380145 n7:1317121
n4:druhVysledku
n11:J
n4:duvernostUdaju
n10:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
99117
n4:idVysledku
RIV/00027162:_____/13:#0001052
n4:jazykVysledku
n18:eng
n4:klicovaSlova
mastitis; bovine; intramammary; IMI; etiology; epidemiology; macrorestriction
n4:klicoveSlovo
n5:epidemiology n5:intramammary n5:bovine n5:mastitis n5:macrorestriction n5:etiology n5:IMI
n4:kodStatuVydavatele
CZ - Česká republika
n4:kontrolniKodProRIV
[6BDE122ED392]
n4:nazevZdroje
VETERINÁRNÍ MEDICINA
n4:obor
n14:GJ
n4:pocetDomacichTvurcuVysledku
7
n4:pocetTvurcuVysledku
9
n4:projekt
n15:QJ1210301 n15:ED0006%2F01%2F01
n4:rokUplatneniVysledku
n16:2013
n4:svazekPeriodika
58
n4:tvurceVysledku
Lorencová, Alena Vlková, Hana Červinková, Dana Maroševič, Durdica Makovcová, Jitka Vrtková, I. Jaglič, Zoran Borodáčová, I. Babák, Vladimír
n4:wos
000329989500002
n4:zamer
n19:MZE0002716202
s:issn
0375-8427
s:numberOfPages
9