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Bacteriological Identification And Biotyping Of Escherichia Coli From Diarrheic Lambs In And Around Debre Berhan Town, Ethiopia | 9467
ISSN: 2155-9910
Journal of Marine Science: Research & Development
Open Access
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Background:
Infectious diarrhea is the most significant cause of morbidity and mortality in neonatal dairy sheep throughout
the world. This is the first study conducted on isolation and biotyping of
E. coli
from lamb diarrhea in and around Debre Birhan.
The present study was undertaken with the objective of isolation, omnilog characterization and biotyping of
E. coli
isolates from
faecal samples around Debrebrhan .
Methods:
A cross-sectional study was conducted from October, 2012 to April, 2013. The study involved in lambs less than three
months of age showing clinical symptoms of diarrhea. Standard cultural and Omnilog tests were done to identify
E. coli
species
and biotypes; descriptive statistics and Chi-square were used to analyze the collected data.
Results:
From a total of 100 diarrheic lambs examined 84% were found to be positive for
E. coli
. On the basis of fermentation
reactions of sugars viz. dulcitol, raffinose, rhamnose, salicin, starch and sucrose, 70 isolates utilized one or more sugar while 14
isolates failed to utilize any of the sugars. 70
E. coli
isolates were biotyped into 15 different combinations. Association between
different age groups and occurrence of lamb diarrhea caused by
E. coli
strains showed a significant association (p < 0.05). From
the questionnaire findings, 60% of all the health problems in lambs were due to diarrhea where young sheep were more affected.
Conclusion:
pathogenic
E. coli
has the potential to cause sheep diarrhea. The distribution of the
E. coli
isolates in to different
biotypes indicates the diverse nature of the organism. Therefore, further detailed study should be carried out in understanding
the role of
E. coli
in lamb diarrhea and identify the virulent strains involved.
Key words:
Biotyping, Debre Birhan, Lamb diarrhea, Omnilog, Sugars,Ethiopia
Biography
Metasebia Aklilu has completed her M.Sc at the age of 25 years from Addis Ababa University and she is the researcher of Addis Ababa University.
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