Fate of pathogens in a simulated bioreduction system for livestock carcasses
- School of Environment, Natural Resources and Geography, College of Natural Sciences, Bangor University, Gwynedd LL57 2UW (United Kingdom)
- School of Biological Sciences, College of Natural Sciences, Bangor University, Gwynedd LL57 2UW (United Kingdom)
Highlights: Black-Right-Pointing-Pointer Bioreduction is a novel on-farm storage option for livestock carcasses. Black-Right-Pointing-Pointer Legislation demands that pathogens are contained and do not proliferate during carcass storage. Black-Right-Pointing-Pointer We examined the survival of key pathogens in lab-scale bioreduction vessels. Black-Right-Pointing-Pointer Pathogen numbers reduced in the resulting liquor waste and bioaerosols. Black-Right-Pointing-Pointer The results indicate that bioreduction should be validated for industry use. - Abstract: The EU Animal By-Products Regulations generated the need for novel methods of storage and disposal of dead livestock. Bioreduction prior to rendering or incineration has been proposed as a practical and potentially cost-effective method; however, its biosecurity characteristics need to be elucidated. To address this, Salmonella enterica (serovars Senftenberg and Poona), Enterococcus faecalis, Campylobacter jejuni, Campylobacter coli and a lux-marked strain of Escherichia coli O157 were inoculated into laboratory-scale bioreduction vessels containing sheep carcass constituents. Numbers of all pathogens and the metabolic activity of E. coli O157 decreased significantly within the liquor waste over time, and only E. faecalis remained detectable after 3 months. Only very low numbers of Salmonella spp. and E. faecalis were detected in bioaerosols, and only at initial stages of the trial. These results further indicate that bioreduction represents a suitable method of storing and reducing the volume of livestock carcasses prior to ultimate disposal.
- OSTI ID:
- 21612970
- Journal Information:
- Waste Management, Vol. 32, Issue 5; Other Information: DOI: 10.1016/j.wasman.2011.10.031; PII: S0956-053X(11)00494-6; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0956-053X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AGRICULTURE
BY-PRODUCTS
COMBUSTION
CONTAINERS
COST
ESCHERICHIA COLI
FARMS
LEGISLATION
PATHOGENS
REGULATIONS
SALMONELLA
SHEEP
SIMULATION
WASTES
ANIMALS
BACTERIA
CHEMICAL REACTIONS
DOMESTIC ANIMALS
LAWS
MAMMALS
MICROORGANISMS
OXIDATION
RUMINANTS
THERMOCHEMICAL PROCESSES
VERTEBRATES