Analysis of ESAM data
| Project start date: | 28 April 2006 |
| Project end date: | 30 November 2006 |
| Publication date: | 01 December 2006 |
| Project status: | Completed |
| Livestock species: | Sheep, Goat, Lamb, Grassfed cattle, Grainfed cattle |
| Relevant regions: | National |
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Download Report
(1.6 MB)
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Summary
The Australian Quarantine Inspection Service provided ESAM data for the period 1 January 2000 to 31 December 2005.
Initially data were screened for correctable errors, collated into a single file, and formatted for analysis by statistical software.
Graphical analyses were used to explore data, generate a descriptive overview for the entire study period, and evaluate the variability of measurements over the study period as a time series. Analyses were performed for each microbiological outcome: presence or absence of generic E. colitotal viable count (TVC) per unit areapresence or absence of Salmonellatype of carcase
A more sophisticated time series approach was used to decompose variations in log TVC cfu.cm-2 into long-term trend, monthly effects and weekly effects for several establishments. The performance of attribute sampling plans were studied by developing computer algorithms for analysis and applying these to the six years of ESAM data at an individual establishment and industry-wide level.
More information
| Project manager: | Rajesh Margapuram |
| Primary researcher: | NSW Department t of Primary Industr |
