Veterinarska stanica, Vol. 51 No. 1, 2020.
Izvorni znanstveni članak
https://doi.org/10.46419/vs.51.1.5
Isolation of bovine clinical mastitis bacterial pathogens and their antimicrobial susceptibility in the Zenica region in 2017
Jasmin Burović
orcid.org/0000-0002-7539-3000
; Veterinarska stanica „Zevet“ d.o.o. Zenica, Bosna i Hercegovina
Sažetak
This study provides data on the bacterial pathogens present in clinical mastitis of dairy cattle and their antimicrobial susceptibility profiles, collected by the Zevet Veterinary Station in the Zenica region in Bosnia and Herzegovina. A total of 52 samples were taken for laboratory isolation and 23 bacterial pathogens were isolated. The most common isolates were Staphylococcus aureus in 21.74% of samples and Streptococcus agalactiae (17.39%), followed by coagulase negative staphylococci (13.04%), Klebsiella pneumoniae (13.04%), Enterococcus spp. (8.70%), Escherichia coli (8.70%), Streptococcus spp., Enterobacter, Serratia spp. and Yersinia enterocolitica (4.35%). The highest antimicrobial resistance among isolates was observed with tested benzylpenicillin (56.25%) and oxytetracyline (46.15%) with an overall resistance of used medical agents of 25.99%. Three of the tested antimicrobial agents (neomycin, clindamycin and cefotaxim) did not show resistance. Other antibiotics with low total resistance were ciprofloxacin (5.56%) and ofloxacin (6.67%). Only one isolate showed no resistance to
the tested antimicrobials (S. aureus). The highest resistance between the isolates was shown by Enterococcus spp., showing sensitivity only to tetracycline. S. aureus showed resistance to benzylpenicillin and cephalexin in 60% of cases. All S. agalactiae isolates were resistant to tetracycline, oxytetracycline and gentamicin. Coagulase negative staphylococci showed resistance to cephalexin in two cases and resistance to benzylpenicillin, erythromycin and oxacillin in one isolate. Klebsiella pneumoniae showed resistance to cephalexin, amoxicillin and benzylpenicillin in all tested isolates, and showed resistance to tetracyclines in two isolates. All other isolates showed resistance to at least one of the antimicrobials tested. A total of 46 cases were treated immediately after clinical diagnosis with an 86.96% success rate, which was estimated based on the absence of clinical relapse and a decrease in the number of somatic cells within the permissible three week limit after therapy.
Ključne riječi
clinical mastitis; Staphylococcus aureus; Zenica; antimicrobial resistance
Hrčak ID:
233214
URI
Datum izdavanja:
29.1.2020.
Posjeta: 2.230 *