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Antibiotic-resistance Staphylococcus Aureus Isolated From Cow?s Milk In The Hawassa Area, South Ethiopia | 9540
ISSN: 2155-9910
Journal of Marine Science: Research & Development
Open Access
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Quarter milk samples from cows were examined to determine the prevalence of
Staphylococcus aureus
(SA) and different
antibiotic resistant pattern were determined in a cross-sectional study design.
Objective:
The aim of this study was to isolate
Staphylococcus aureus
from samples of cow?s milk obtained from Hawassa area and
to determine their antibiotic susceptibility patterns.
Method:
A total of 160 milk (CCP1-CCP5) samples were collected and screened for the presence of
S. aureus
. Gram staining,
oxidase, catalase, DNase, haemolysis and coagulase tests were employed for bacterial identification.
Results:
All the samples were contaminated with S. aureus. A total of 78
S. aureus
isolates were obtained during this study. The
levels of contamination with
S. aureus
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
S. aureus
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.
Conclusion:
The proportion of isolates resistant to CIP, TMP-SMZ, CRO, AC, E and V were low compared to AP, PG and Ox.
S. aureus
is normally resident in humans; therefore, the
S. aureus
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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