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Fate of pathogens in a simulated bioreduction system for livestock carcasses

Gwyther, Ceri L.; Jones, David L.; Golyshin, Peter N.; Edwards-Jones, Gareth and Williams, A. Prysor (2012). Fate of pathogens in a simulated bioreduction system for livestock carcasses. Waste Management, 32(5) pp. 933–938.

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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 three 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.

Item Type: Journal Item
Copyright Holders: 2011 Elsevier
ISSN: 0956-053X
Keywords: Agriculture; Animal slaughterhouse waste; Fallen stock; Meat waste; Zoonoses
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 50910
Depositing User: Ceri Gwyther
Date Deposited: 13 Sep 2017 13:54
Last Modified: 08 Dec 2018 14:28
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