ABSTRACT
The antibiotic sensitivity pattern of Echerichia coli isolated from faecal samples from healthy domestic livestock ( goats, local fowls and broilers) was determined. Inoculation was carried out using the streaking method of inoculation and he sensitive was determined using the Disc diffusion method .50 E.coli strains were isolated from the three locations. In location 1 16(35.7%) were resistance to Ampicillin, 10(35.7%) to Gentamycin and 1(3.6%) to Ciprofloxacin. In location 2, 6(50.0%) were resistant to Ampicillin, 5(41.7%) to Gentamycin and streptomycin, while all the isolates were susceptible to Ciprofloxacin. In location 3, 6(60.0%) showed resistance to Ampicillin, while there is no evidence of resistant against Oxytetracyclin and ciprofloxacin 0(0.00%). Comparing Resistance rates according to all spruces of samples, 10(66.7%) of Goat isolates were resistance to Ampicillin, 7(46.7%) to Gentamycin and streptomycin respectively, 19(76.0%) from Local fowl isolates showed resistance to Ampicillin while the least percentage was recorded against ciprofloxacin 2(8.00%). From the broilers isolates 5(50.0%) were resistant to Ampicillin and Gentamycin and there was no evidence of resistance recorded against ciprofloxacin. The use of antibiotics in this feeding of these animals should be checked so as to reduce the development of drug resistance.
TABLE OF CONTENTS
Title page i
Certification ii
Dedication iii
Acknowledgment iv
Table of content v
List of Tables vi
Abstract vii
CHAPTER ONE
INTRODUCTION
1.1 Introduction 1
1.2 Aims and Objectives 2
CHAPTER TWO
LITERATURE REVIEW 3
2.1
Classification of Escherichia Coli 4
2.2 Morphology
and Identification of Escherichia Coli 4
2.3 classification of
Echerichia coli 5
2.4 Escherichia Coli Strains 5
2.5 Antigens 6
2.6
Epidemiology 6
2.7 Antibiotic
Resistance of Escherichia Coli 7
CHAPTER THREE
MATERIALS AND
METHODS
3.1 Material
Used 10
3.2 Sample
Collection 10
3.3 Preparation
of Media 10
3.4 Sample
Cultivation 11
3.5 Characterization
and Identification of Bacterial Isolates 11
3.5.2 Gram
Staining 12
3.5.2 Indole
Test 12
3.5.3 Catalase
Test 12
3.5.4 Citrate
Test 13
3.5.5 Oxidase
Test 13
3.6 Antibiotic
Susceptibility Test 14
CHAPTER FOUR
Results 15
CHAPTER FIVE
Discussion 20
5.1 Conclusion 21
5.2 Recommendation 21
References
LIST OF TABLES
Table
Title Pages
1 Antimicrobial
susceptibility of E-coli Isolates
from Livestock in Umuwaoma
Ngor-Okpala L.G.A Imo state. 17
2 Frequency of Resistance of E. coli. Isolate from Different Families
to
Antimicrobial
Agents by Source of Sample. 18
3 Biochemical
Identification of Echerichia coli 19
CHAPTER ONE
1.1 INTRODUCTION
Antibiotic
usage is usually possibly the most important factors that promotes the emergence,
selection and dissemination of antibiotic resistant microorganisms in both veterinary
and human medicine (Daniels et al
2009).
This
acquired resistance occurs not only in pathological bacteria but also in the
endogenous flora if exposed individuals (animals and humans). In intensively
reared food animals antibiotics may be administered to whole flocks rather than
individual animals, and antimicrobial agents may be continuously feed to food
animals such as poultry, goats and cattle as growth promoter. Therefore the
antibiotic selection pressure for bacteria drug resistance in the animal is
high and invariably their faecal flora contains a relatively high proportion of
resistance bacteria (Whitworth et al;
2008, Literak et al; 2010). The
mechanism for spreading antibiotic resistance for animals to humans and verse
vice remains controversial. Colonization of the intestinal tract with
resistance to E. coli from chicken have been
shown in human volunteers and there is historical evidence that animals are a
reservoir for E.coli found in humans (A
kwar et al ;2008,Kikuvi et al 2010). Furthermore, spread of
antibiotic resistance plasmids in E.coli
from chickens to human handlers or of
antibiotics-resistance microorganisms from animals to human in various
countries has been reported (Fang et al;
2008).
Resistance
has been found in organisms common to both humans and animals such as E.coil (Davis et al ; 2009). Due to the intricate balance of micro flora of
different habitats within the ecosystem, the transfer of resistance genes among
bacteria occupying different habitats has the potential to occur frequently.
Since
transmission of resistance from animals to human (Kauiuki et al ; 1999) occur through various means, this study seeks to
evaluate the incidence of antimicrobial resistance in E.coli isolated from livestock and poultry living in close contact.
Antimicrobial
substances have been used for both treatment and prevention of bacterial
disease for decades. Because of their incorrect usage, bacteria have developed,
resistance to these substance (Singer et
al ; 2003, Jackson et al ; 2004).
However, even in the absence of heavy use of antibiotic .it is important to
identify and monitor susceptibility profiles of bacterial isolates, particular
of commensally organisms. This, according to John and Fishman (1997), will
provide information on resistance trends including emerging antibiotic
resistance. Healthy livestock used in this research which include goats, local
fowls and broilers where gotten from Umuwaoma and there is no documented
evidence of antibiotics use in the farm from which the samples were collected.
1.2 Aims
and Objectives
1. To
isolates E.coli from healthy domestic
livestock in Umuwaoma, Ngor-Okpala L.G.A Imo state.
2. To
determine the antibiotic susceptibility pattern of E.coli isolated from healthy
domestic livestock in Umuwaoma, Ngor-Okpala L.G.A Imo state.
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