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Year : 2017
Tome : 168
Volume : 10-12
Pages : 213-218
Title : Investigation on Bacillus cereus and associated risk factors in bovine raw milk in Debre Zeit town, Ethiopia
Authors : A. KASSA, G. ZEWUDE, T. SISAY TESSEMA
Summary : A cross sectional study was carried out at eleven dairy farms to determine the prevalence and load of B. cereus in raw milk samples using standard bacteriological procedures. In addition, risk factors associated with B. cereus load and potential public health implications were assessed. The overall prevalence of B. cereus was 15.4% (59). B. cereus count ranged from 2.3 x 104 - 5.4 x 105 CFU/ml. From positive samples, 58 (15.1%) of total samples have significant counts (> 105 CFU/ml) which was above legal limit in raw milk. The mean of B. cereus counts differed significantly between farms and within parities of cows (p < 0.05). Raw milk samples collected from both zero-grazing and semi-intensive farm management systems were highly contaminated with B. cereus suggesting the need for introducing effective hygienic measures in milk value chains to avoid public health hazards.
Keywords : Bacillus cereus, count, Ethiopia, prevalence, public health, raw Milk
Correspondence : T. SISAY TESSEMA
Adress : Institute of Biotechnology, Addis Ababa University, P.O.Box= 1176, Addis Ababa, Ethiopia; E-mail: tesfu74@yahoo.com
Link : pdf

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