Prevalence and Genetic Diversity of Bacillus cereus Isolated from Raw Milk and Cattle Farm Environments

Bacillus cereus not only has adverse effects on the nutrition and shelf life of dairy products but also seriously endanger people’s health. This study was conducted to reveal the prevalence and genetic diversity of B. cereus strains isolated from raw milk and cattle farm environments. A total 56 of...

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Bibliographic Details
Published in:Current microbiology 2019-11, Vol.76 (11), p.1355-1360
Main Authors: Fei, Peng, Yuan, Xiujuan, Zhao, Shengjuan, Yang, Tongxiang, Xiang, Jinle, Chen, Xi, Zhou, Lianxin, Ji, Mengdi
Format: Article
Language:English
Subjects:
Air Microbiology
Animal Husbandry - instrumentation
Animals
Bacillus cereus
Bacillus cereus - classification
Bacillus cereus - genetics
Bacillus cereus - isolation & purification
Bedding
Biomedical and Life Sciences
Biotechnology
Bovidae
Buckets
Cattle
Cattle - microbiology
Cow's milk
Dairy cattle
Dairy products
Farms
Female
Fodder
Genetic diversity
Genetic Variation
Life Sciences
Livestock farming
Microbiology
Milk
Milk - microbiology
Milking
Milking machines
Multilocus Sequence Typing
Nutrition
Pasteurization
Phylogeny
Shelf life
Soil Microbiology
Soil water
Strains (organisms)
Water Microbiology
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Summary:Bacillus cereus not only has adverse effects on the nutrition and shelf life of dairy products but also seriously endanger people’s health. This study was conducted to reveal the prevalence and genetic diversity of B. cereus strains isolated from raw milk and cattle farm environments. A total 56 of B. cereus strains were detected from 300 environmental samples (soil, water, fodder, air, milk pails, milking machines, cowsheds, bedding, excrement, cow surfaces, udders, overalls, soles, and staff hand samples) and 50 raw milk samples, and divided into 18 sequence types (STs) using multilocus sequence typing method. These STs included ST27, ST61, ST92, ST142, ST168, ST208, ST378, ST427, ST766, ST 857, ST1098, ST1140, ST1194, ST1236, ST1336, ST1339, ST1341, and ST1348, among them, ST857 (7/56, 12.5%) was the dominant ST, and were detected from air, cowsheds, bedding, excrement, and raw milk samples. Our findings could reveal the distribution and genetic diversity of B. cereu s strains in raw milk and cattle farm environments, and provide a theoretical basis for controlling the potential harm of this pathogenic bacteria in dairy products.
ISSN:0343-8651
1432-0991
DOI:10.1007/s00284-019-01741-5