Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/28945
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: High resolution characterisation of E. coli proliferation profiles in livestock faeces
Author(s): Porter, Kenneth D H
Quilliam, Richard S
Reaney, Sim M
Oliver, David M
Keywords: Agricultural waste management
diffuse pollution
faecal indicator organism
microbial die-off
survival curves
Issue Date: 15-Mar-2019
Citation: Porter KDH, Quilliam RS, Reaney SM & Oliver DM (2019) High resolution characterisation of E. coli proliferation profiles in livestock faeces. Waste Management, 87, pp. 537-545. https://doi.org/10.1016/j.wasman.2019.02.037
Abstract: Agricultural intensification can lead to high volumes of livestock faeces being applied to land, either as solid or liquid manures or via direct defecation, and can result in reservoirs of faecal indicator organisms (FIOs) persisting within farmland. Understanding the survival of FIOs, e.g. E. coli, in agricultural environments, and in particular within different livestock faeces, is key to developing catchment management practices for the protection of ecosystem services provided by clean water. Frequently, controlled laboratory studies, under constant temperature regimes, are used to determine the impact of environmental factors on E. coli persistence in livestock faeces; however, such studies oversimplify the diurnal variations and interactions of real world conditions. The aim of this study was to investigate the survival of E. coli using a controlled environment facility, which simulated diurnal variation of temperatures typically experienced during a British spring and summer. The approach provided a comparison of E. coli persistence profiles within faeces of sheep, beef cattle and dairy cattle to allow novel interpretations of E. coli regrowth patterns in contrasting livestock faeces in the period immediately post-defecation. Thus, the coupling of a tightly controlled environment facility with high resolution monitoring enabled the development of a new non-linear, asymptotic description of E. coli proliferation in livestock faeces, with increased potential for E. coli growth observed during warmer temperatures for all livestock types. While this study focused on temperatures typical of the UK, the occurrence of a phase of E. coli regrowth has implications for microbial water quality management worldwide.
DOI Link: 10.1016/j.wasman.2019.02.037
Rights: Copyright 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Licence URL(s): http://creativecommons.org/licenses/by/4.0/

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