Antimicrobial susceptibility of streptococci most frequently isolated from Czech dairy cows with mastitis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027162%3A_____%2F19%3AN0000011" target="_blank" >RIV/00027162:_____/19:N0000011 - isvavai.cz</a>

Alternative codes found

RIV/00027014:_____/19:N0000163

Result on the web

<a href="https://content.sciendo.com/view/journals/aoas/19/3/article-p679.xml" target="_blank" >https://content.sciendo.com/view/journals/aoas/19/3/article-p679.xml</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/aoas-2019-0015" target="_blank" >10.2478/aoas-2019-0015</a>

Result language

angličtina

Original language name

Antimicrobial susceptibility of streptococci most frequently isolated from Czech dairy cows with mastitis

Original language description

The objective was to investigate the antimicrobial susceptibility of most frequently isolated streptococci from Czech dairy herds. A total of 3,719 quarter milk samples were collected between January 2017 and June 2018 from cows with clinical or subclinical mastitis from 112 farms. One isolate of each species collected from the same farm per a six-month period was included in the susceptibility testing. The susceptibilities of Streptococcus uberis (163 isolates) and S. dysgalactiae (25 isolates) to 10 antimicrobials (penicillin - PEN, amoxicillin/clavulanic acid - AMC, ceftiofur - EFT, clindamycin - CLI, gentamicin - GEN, streptomycin - STR, trimethoprim/sulfamethoxazole - SXT, enrofloxacin - ENR, tetracycline - TET, rifampicin - RIF) from 9 groups were determined by measuring their minimum inhibitory concentrations. Bacteriological cultivation produced 648 isolates of S. uberis, 41 isolates S. dysgalactiae and 19 isolates S. agalactiae. The percentages of resistant S. uberis isolates to the antimicrobials were as follows: TET (63.2%), STR (52.1%), CLI (30.1%), RIF (2.5%). We found intermediate susceptibility to RIF (63.2%), PEN (35%), ENR (2.5%), EFT (1.8%) and AMC (1.2%). All the isolates tested were susceptible to GEN and SXT (100%). However, only 6.7% isolates were susceptible to all the antimicrobials and 38.7% isolates were multidrug resistant (≥3 groups of antimicrobials). All the S. dysgalactiae isolates were susceptible to PEN, AMC, EFT, GEN, SXT and ENR (100%). The resistant isolates found were to TET (60%), STR (28%), CLI (12%), and intermediate to TET (24%) and RIF (20%). Multidrug resistant isolates represented 16%. Only 8% of isolates were sensitive to all the antimicrobials. A relatively high occurrence of (multiple) resistance in mastitis pathogens highlights the importance of its monitoring in dairy herds.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

40301 - Veterinary science

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Annals of Animal Science

ISSN

2300-8733

e-ISSN

—

Volume of the periodical

19

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

16

Pages from-to

679-694

UT code for WoS article

000478645400008

EID of the result in the Scopus database

2-s2.0-85064386663