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Quarter milk samples from cows were examined to determine the prevalence of
(SA) and different
antibiotic resistant pattern were determined in a cross-sectional study design.
The aim of this study was to isolate
from samples of cow?s milk obtained from Hawassa area and
to determine their antibiotic susceptibility patterns.
A total of 160 milk (CCP1-CCP5) samples were collected and screened for the presence of
. Gram staining,
oxidase, catalase, DNase, haemolysis and coagulase tests were employed for bacterial identification.
All the samples were contaminated with S. aureus. A total of 78
isolates were obtained during this study. The
levels of contamination with
were higher in milk obtained from CCP1, CCP2, CCP3, CCP4 and CCP5 at Hawassa
area farms (18.0%, 25.6%, 27.0%, 21.8% and 7.7%) respectively. A large percentage of the
isolates (25.6% and 27.0%)
were from CCP2 and CCP3. All strains were resistant to penicillin G (PG), Ampicillin (AP), Amoxicillin-Clavulanic acid (AC),
Ciprofloxacin (CIP), erythromycin (E), Ceftriaxone (CRO), Trimethoprime-Salfamethoxazole (TMP-SMZ) Oxacilin (Ox) and
vancomycin (V), 67.9%, 70.9%, 30.9%, 0%, 32.1%, 23.1%, 7.7%, 60.3% and 38.5% respectively.
The proportion of isolates resistant to CIP, TMP-SMZ, CRO, AC, E and V were low compared to AP, PG and Ox.
is normally resident in humans; therefore, the
present in the cow?s milk may have resulted from transmission
between the two species, emphasizing the need to improve sanitary conditions in the milking environment.
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