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Epidemiology of intramammary infections with Staphylococcus aureus and mastitis streptococci in a dairy cattle herd with a history of recurrent clinical mastitis.

Abstract The aim of the present work was to examine a dairy herd with an anamnesis of recurrent clinical mastitis and decreased milk production. A total of 239 individual cow milk samples originating from asymptomatic cows were collected at four-month intervals and examined mainly for the presence of Staphylococcus aureus and mastitis streptococci using standard cultivation methods. In total, 29.7% and 9.2% samples were positive for S. aureus and mastitis streptococci, respectively. Unlike for mastitis streptococci, the prevalence of animals positive for S. aureus had an increasing trend (p<0.05; Chi-squared test for trend) with rising parity. Despite in vitro susceptibility of S. aureus to potentiated penicillins and cephalosporins, the persistence of S. aureus was observed in cows undergoing intramammary treatment with amoxicillin/clavulanic acid (a potentiated penicillin antibiotic). All isolates of S. aureus were biofilm-positive and had the same macrorestriction pattern. Furthermore, no dependence was observed between the occurrence of S. aureus in milk and previous cases of clinical mastitis, reproductive and periparturient disorders and administration of antibiotics. In contrast to S. aureus, the occurrence of mastitis streptococci in milk was linked with previous cases of clinical mastitis and intramammary administration of antibiotics.
PMID
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Authors

Mayor MeshTerms
Keywords

Staphylococcus aureus

bovine

mastitis

mastitis streptococci

resistance

Journal Title polish journal of veterinary sciences
Publication Year Start




PMID- 28525325
OWN - NLM
STAT- In-Process
DA  - 20170519
LR  - 20170523
IS  - 1505-1773 (Print)
IS  - 1505-1773 (Linking)
VI  - 20
IP  - 1
DP  - 2017 Mar 28
TI  - Epidemiology of intramammary infections with Staphylococcus aureus and mastitis
      streptococci in a dairy cattle herd with a history of recurrent clinical
      mastitis.
PG  - 133-139
LID - 10.1515/pjvs-2017-0017 [doi]
LID - /j/pjvs.2017.20.issue-1/pjvs-2017-0017/pjvs-2017-0017.xml [pii]
AB  - The aim of the present work was to examine a dairy herd with an anamnesis of
      recurrent clinical mastitis and decreased milk production. A total of 239
      individual cow milk samples originating from asymptomatic cows were collected at 
      four-month intervals and examined mainly for the presence of Staphylococcus
      aureus and mastitis streptococci using standard cultivation methods. In total,
      29.7% and 9.2% samples were positive for S. aureus and mastitis streptococci,
      respectively. Unlike for mastitis streptococci, the prevalence of animals
      positive for S. aureus had an increasing trend (p&lt;0.05; Chi-squared test for
      trend) with rising parity. Despite in vitro susceptibility of S. aureus to
      potentiated penicillins and cephalosporins, the persistence of S. aureus was
      observed in cows undergoing intramammary treatment with amoxicillin/clavulanic
      acid (a potentiated penicillin antibiotic). All isolates of S. aureus were
      biofilm-positive and had the same macrorestriction pattern. Furthermore, no
      dependence was observed between the occurrence of S. aureus in milk and previous 
      cases of clinical mastitis, reproductive and periparturient disorders and
      administration of antibiotics. In contrast to S. aureus, the occurrence of
      mastitis streptococci in milk was linked with previous cases of clinical mastitis
      and intramammary administration of antibiotics.
FAU - Vlkova, H
AU  - Vlkova H
AD  - .
FAU - Babak, V
AU  - Babak V
AD  - .
FAU - Vrtkova, I
AU  - Vrtkova I
AD  - .
FAU - Cervinkova, D
AU  - Cervinkova D
AD  - .
FAU - Marosevic, D
AU  - Marosevic D
AD  - .
FAU - Moravkova, M
AU  - Moravkova M
AD  - .
FAU - Jaglic, Z
AU  - Jaglic Z
AD  - .
LA  - eng
PT  - Journal Article
PL  - Germany
TA  - Pol J Vet Sci
JT  - Polish journal of veterinary sciences
JID - 101125473
OTO - NOTNLM
OT  - Staphylococcus aureus
OT  - bovine
OT  - mastitis
OT  - mastitis streptococci
OT  - resistance
EDAT- 2017/05/20 06:00
MHDA- 2017/05/20 06:00
CRDT- 2017/05/20 06:00
AID - 10.1515/pjvs-2017-0017 [doi]
AID - /j/pjvs.2017.20.issue-1/pjvs-2017-0017/pjvs-2017-0017.xml [pii]
PST - ppublish
SO  - Pol J Vet Sci. 2017 Mar 28;20(1):133-139. doi: 10.1515/pjvs-2017-0017.

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