Decline of zoonotic agents in livestock waste and bedding heaps
Open Access
- 16 June 2005
- journal article
- Published by Oxford University Press (OUP) in Journal of Applied Microbiology
- Vol. 99 (2), 354-362
- https://doi.org/10.1111/j.1365-2672.2005.02591.x
Abstract
Aims: To measure the rates of decline of zoonotic agents introduced into heaps of spent bedding and faecal wastes generated by commercially farmed livestock and managed in a similar way to that of a working farm. Methods and Results: Livestock isolates of Salmonella, pathogenic Listeria, Campylobacter and Escherichia coli O157 were laboratory cultured and used to inoculate 5 m3 heaps of cattle, sheep or pig wastes mixed with bedding materials. Decline of each of the infectious agents was monitored with time as was the temperature inside each heap. Temperatures of >50°C were typically achieved at the core of the heaps. Pathogen decline was rapid, typically <3 days for a 1‐log reduction in levels. The longest time that zoonotic agents were isolated from the heaps was 93 days. Conclusions: Movement of heaps of livestock bedding waste from animal pens to a secondary store, and storing them under conditions conducive for increased temperature is a simple and cost‐effective treatment for rapidly lowering levels of zoonotic agents in solid farm wastes. Significance and Impact of the Study: This study demonstrates a simple and cheap treatment that can be used to help prevent the spread of zoonotic agents through agricultural environments.Keywords
This publication has 21 references indexed in Scilit:
- Fate of Pathogens Present in Livestock Wastes Spread onto Fescue PlotsApplied and Environmental Microbiology, 2005
- Levels of zoonotic agents in British livestock manuresLetters in Applied Microbiology, 2004
- A survey of the production and use of animal manures in England and Wales. III. Cattle manuresSoil Use and Management, 2001
- A survey of the production and use of animal manures in England and WalesSoil Use and Management, 2001
- A survey of the production and use of animal manures in England and Wales. I. Pig manureSoil Use and Management, 2000
- Strategies to encourage better use of nitrogen in animal manuresSoil Use and Management, 2000
- The-survival-characteristics-of-a-non-toxigenic-strain-of-Escherichia-coli-O157:H7Journal of Applied Microbiology, 1999
- Salmonella elimination during composting of spent pig litterBioresource Technology, 1998
- A 1-year study of Escherichia coli O157 in cattle, sheep, pigs and poultryEpidemiology and Infection, 1997
- A fifteen month study of Escherichia coli O157:H7 in a dairy herdEpidemiology and Infection, 1997