Microbiological Quality of Farm Bulk Milk

A cross-sectional study was conducted from January 2021 to February 2022 to assess factors affecting the microbiological quality and contamination of farm bulk milk by S. aureus in dairy farms in Asella, Ethiopia. A total of 434 samples were collected from 50 dairy farms. Of this, 50 were farm bulk milk, 102 pooled udder milk, 50 water for cleaning of udder and hands, 50 milking container swabs, 30 bulking bucket swabs, 50 hand swabs and 102 teat swab samples. Asella was purposively selected based on milk production potential and accessibility. Kebeles (the smallest administrative units) were selected by the simple random sampling technique, and dairy farms or households were selected randomly within the Kebeles. The study animals included crossbred lactating dairy cows (Holstein-Friesian x Zebu) of all age categories kept under intensive and semi-intensive management systems. The sampling was limited to 50 farms because of limitations related to time and logistics.

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Deddefo A., Mamo G., Asfaw M, & Amenu K. (2023). Factors affecting the microbiological quality and contamination of farm bulk milk by Staphylococcus aureus in dairy farms in Asella, Ethiopia. BMC Microbiology, 23, 65.

Publication 2023

Animals Dairy cows Households Milk Teat Udder Zebu

Corresponding Organization :

Other organizations : Asossa University, Addis Ababa University

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Variable analysis

independent variables

Dairy farm location (Asella, Ethiopia)
Dairy farm management system (intensive and semi-intensive)

dependent variables

Microbiological quality of farm bulk milk
Contamination of farm bulk milk by S. aureus

control variables

Lactating dairy cows (crossbred Holstein-Friesian x Zebu) of all age categories

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