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Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
Faculty of Medicine >
Thesis - Medical Microbiology >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/2164
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| Title: | BACTERIOLOGICAL ANALYSIS OF COW MILK IN HAWASSA TOWN, SNNPRS ETHIOPIA |
| Authors: | Deresse, Daka |
| Advisors: | Dr. Solomon Gebre-Selassie |
| Keywords: | milk
bacterial plate count,
coliforms
milk hygiene,
raw milk,
pasteurized milk
antibiotic sensitivity. |
| Copyright: | May-2011 |
| Date Added: | 3-May-2012 |
| Abstract: | Abstract
Modern dairy processing is a recent phenomenon in Ethiopia for the very reason that the
country has not been producing enough milk at commercial scale. The establishment of state
owned and private dairy farms in big cities resulted in the realization of the few dairy processing
plants. In addition to poor transport system and infrastructure of the country, the dairy
processing plants are located far away from farms. This is further aggravated by other facts like
poor dairy management, poor milking hygiene and lack of good milk cooling and transport
facilities and therefore the quality of milk is greatly depreciated by the time it arrives to
processing plants.
Thus, the specific objectives of the study are to assess the bacteriological quality of raw milk
from the farm to the processing plant, to determine the bacteriological quality of pasteurized
milk, to identify public health important bacteria from the raw and pasteurized milk and to
identify the critical control points through the milk collection and processing practices.
The study was conducted mainly bacteriological quality tests and bacteriological isolation and
identification of sampled milk at different points before pasteurization and at different time
points of pasteurized milk and subordinately used questionnaire. Detailed microbiological
analysis was carried out on selected pathogens of public health importance. For selection of the
samples, simple random sampling technique was used. The data to be generated from the
questionnaire and the laboratory tests were summarized and analyzed using appropriate
descriptive and analytical statistics.
As the result of the study showing that 326 bacterial strains were isolated from CCP1 up to
CCP6. There was different species of bacteria in different HACCP levels of milk. In CCP1, there
were 51 bacteria of different species and in CCP2, CCP3, CCP4, CCP5 and CCP6, was 64, 73,
80, 20, and 38 respectively. The predominant bacteria species in all (CCP1-CCP5) levels of the
milk was S. aureus which accounts 14(27.5%), 20(31.3%), 21(28.8%), 17(21.3%), and 6(30.0%)
respectively.
In line with this the remedial solution for aforementioned identified findings the effective drugs
was Ciprofloxacin, Gentamycin, TMP-SMZ, and Ceftriaxone, whereas, Ampicillin and Penicillin
were resistant for many of |
| URI: | http://hdl.handle.net/123456789/2164 |
| Appears in: | Thesis - Medical Microbiology
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