Assessing the biosafety risks of pig manure for use as a feedstock for composting

McCarthy, G. and Lawlor, P. G. and Gutierrez, M. and Gardiner, G. E. (2013) Assessing the biosafety risks of pig manure for use as a feedstock for composting. Science of the Total Environment, 463-46. pp. 712-719. ISSN 0048-9697

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Abstract

The objective was to assess the biosafety risks of pig manure for use as a feedstock for composting. Salmonella was detected in the manure from half of the 30 pig farms sampled, with 52% of isolates recovered identified as multi-drug resistant S. Typhimurium. The highest prevalence (60%) was found on Salmonella category 2 and 3 farms i.e. those with medium and high Salmonella seroprevalence, respectively, although this was not statistically significant. Escherichia coli counts were, however, significantly higher in manure from Salmonella category 3 farms. Manure separation may be useful as a means of reducing/eliminating pathogens from manure prior to composting, as manure solids generated using a decanter centrifuge had lower E. coli and Enterococcus counts than manure. These findings should be taken into consideration when selecting pig manure for use as a feedstock for compost or other marketable manure by-products.

Item Type:	Article
Additional Information:	Funding Information: We thank the Teagasc pig advisors; Ciaran Carroll, Ger McCutcheon, Michael McKeon and Seamus Clarke for manure sampling as well as the pig farmers for allowing us access to their farms. We also thank Tony O'Brien from the Central Veterinary Research Laboratory for technical assistance and John Hannon from Teagasc, Moorepark for help with the construction of dendrograms. Funding was provided by the Higher Education Authority Technological Sector Research Strand I Programme and the Department of Agriculture Food and the Marine's Research Stimulus Fund Programme . G. Mc Carthy's PhD is funded by the Teagasc Walsh Fellowship Scheme .
Uncontrolled Keywords:	/dk/atira/pure/subjectarea/asjc/2300/2305
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Depositing User:	Admin SSL
Date Deposited:	19 Oct 2022 23:04
Last Modified:	07 Jun 2023 18:42
URI:	http://repository-testing.wit.ie/id/eprint/3890

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