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| Antimicrobial Susceptibilities of Escherichia coli Isolates
from Food Animals and Wildlife Animals in Sarawak, East Malaysia |
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K. Apun,
Y.L. Chong,
M.T. Abdullah and V. Micky |
Abstract:
A total of 133 E. coli strains isolated from
different food animals and wildlife sources in Sarawak, Malaysia were
screened to determine their antibiotic-resistance pattern using the disk
diffusion methods. The animal sources were broiler and village chickens,
cattle, bats and rodents. All E. coli isolates were tested for
their resistance patterns towards 12 commonly used antibiotics: ampicillin,
carbenicillin, cephalothin, chloramphenicol, gentamicin, nalidixic acid,
neomycin, nitrofurantoin, ofloxacin, streptomycin, sulfamethoxazole-trimethoprim
and tetracycline. In general, the most frequently encountered form of
resistance in all samples was resistance to tetracycline (41.35%) and
sulphamethoxazole-trimethoprim (19.55%). Low levels of resistance were
for gentamicin, nitrofurantoin and ofloxacin, which demonstrated less
than 7% resistance of the total samples being assessed. The Multiple Antibiotic
Resistance (MAR) indices were highest for broiler chicken isolates (0.479)
and low for bat isolates (0.013). All isolates from both broiler chicken
samples were multidrug-resistant E. coli. A high percentage of
the isolates from bat (84.62%) and rodent (68.57%) samples were not resistant
(totally susceptible) to all the antibiotics tested. The results in this
study thus suggest that wildlife do not present a high risk of spreading
antibiotic-resistant E. coli to the environment. The higher value
of MAR indices as well as prevalence of multiple-resistance patterns of
E. coli isolates from food animals demonstrated that indiscriminate
use of antibiotics should be discouraged in food animals to overcome future
resistance problem.
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How to cite this article:
K. Apun, Y.L. Chong, M.T. Abdullah and V. Micky, 2008. Antimicrobial Susceptibilities of Escherichia coli Isolates
from Food Animals and Wildlife Animals in Sarawak, East Malaysia. Asian Journal of Animal and Veterinary Advances, 3: 409-416.
DOI: 10.3923/ajava.2008.409.416
URL: https://scialert.net/abstract/?doi=ajava.2008.409.416
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