Effect of stacking method on Salmonella elimination from recycled poultry bedding

Bush, Dawn J.; Poore, M. H.; Rogers, G.W.; Altier, Craig

doi:10.1016/j.biortech.2006.02.017

Cited by 14 publications

(15 citation statements)

References 13 publications

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“…Factors such as temperature, ammonia concentration, pH, moisture and competition from indigenous microorganisms were potential factors affecting Salmonella survival (Bush et al, 2007). The decline occurred in the Salmonella population in our study was in agreement to that result reported by Kwak et al (2005).…”

Section: Biological Analysissupporting

confidence: 92%

Effect of deep-stacking broiler litter on pathogenic bacteria, intake, digestibility, microbial protein supply and rumen parameters in sheep

Baluch-Gharaei

Rouzbehan

Fazaeli

et al. 2015

Animal Feed Science and Technology

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Section: Biological Analysissupporting

confidence: 92%

Effect of deep-stacking broiler litter on pathogenic bacteria, intake, digestibility, microbial protein supply and rumen parameters in sheep

Baluch-Gharaei

Rouzbehan

Fazaeli

et al. 2015

Animal Feed Science and Technology

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“…1998; Himathongkham and Riemann 1999). Bush et al. (2007) determined that temperature gradients formed within compost heaps, and the temperatures near the outside edges of stacked poultry litter changed with the ambient temperature and likely explains the persistence of coliforms and pathogenic micro‐organisms at the compost surface.…”

Section: Discussionmentioning

confidence: 99%

Microbiological analysis of composts produced on South Carolina poultry farms

Shepherd

Ping

Jiang

et al. 2009

Journal of Applied Microbiology

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Aims: The purpose of this study was to determine whether the methods used in compost operations of small and medium‐sized poultry forms resulted in the production of an amendment free of foodborne pathogens. Methods and Results: Nine compost heaps on five South Carolina poultry farms were surveyed at different stages of the composting process. Compost samples were analysed for coliforms and enriched for Escherichia coli O157:H7, Salmonella spp. and Listeria monocytogenes. The waste materials and composting practices differed among the surveyed farms. On two farms, new materials were added to heaps that had previously completed the active composting phase. Five compost heaps did not reach an internal temperature of 55°C, and c. 62% of all internal samples in the first composting phase contained moisture contents <40%. Escherichia coli was detected in 63% of the surface samples (n = 38) and 9·8% of the internal samples (n = 82) from the first composting phase, as compared with 16·7% of the surface samples (n = 12) and 0% internal samples (n = 24) from the second composting phase. Salmonella was detected in 26 and 6·1% of all surface and internal samples collected from heaps in the first composting phase, respectively, but was absent in all compost samples undergoing a second composting phase. The predominant Salmonella serotypes were Thompson, Montevideo and Anatum. Neither E. coli O157:H7 nor L. monocytogenes was detected in any of the samples. Conclusions: Our results indicate that the conditions at the compost surface are suitable for pathogen survival, and the complete composting process can result in the elimination of pathogens in poultry wastes. Significance and Impact of the Study: This research provides information regarding the effectiveness of the composting practices and microbiological quality of poultry compost produced by small‐ and medium‐sized farms. Ensuring the safety of compost that may be applied to soils should be an integral part of preharvest food safety programme.

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“…Deep stacking or ensiling poultry litter is commonly recommended as a pretreatment to improve its safety and palatability as a feed for ruminants (Capucille et al, 2004;Bush et al, 2007). Bush et al (2007) showed that despite the wide variation of temperature within the stacks, Salmonella was eliminated in 98.7% of all inoculated sites. Furthermore, Salmonella organisms were reduced by at least 5 log in the remaining sites where it was still viable.…”

Section: Introductionmentioning

confidence: 98%

Effect of heating and aging of poultry litter on the persistence of enteric bacteria

Wilkinson¹,

Tee²,

Tomkins³

et al. 2011

Poultry Science

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Food-borne illnesses have rarely been associated with the reuse of poultry litter as an organic fertilizer and soil amendment in agriculture. Yet farming practices in many countries have come under increased scrutiny because of heightened consumer awareness of food safety and environmental issues. This study was conducted to determine whether simple on-farm management practices could improve the microbiological safety of poultry litter. First, the effects of heat and moisture on the survival of Escherichia coli and Salmonella enterica serovar Typhimurium in poultry litter were investigated under laboratory conditions. Second, the persistence and regrowth of enteric bacteria were examined in poultry litter that had been aged for up to 12 wk in either a turned or static (unturned) windrow. Escherichia coli and Salmonella counts in poultry litter were reduced by >99% in 1 h at 55 or 65°C under laboratory conditions. At 35°C, both persisted longer under moist (65% wt/wt, wet basis) than dry (30% wt/wt) conditions. Poultry litter aged for 3 wk in a turned windrow, and up to 6 wk in a static windrow, supported increased E. coli densities when incubated in the laboratory at 37°C for 21 d. Peak temperatures >65°C were observed in both windrows within the first 3 wk of aging; after this point, the turned windrow was more consistently exposed to temperatures >45°C than the static windrow. By 12 wk, however, E. coli counts were very similar (3 to 3.6 log(10)) in the outside edge of both windrows. This study highlights the need for a better understanding of the interrelationship between spontaneous heating in organic waste streams, organic matter stabilization, and pathogen reduction.

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Effect of stacking method on Salmonella elimination from recycled poultry bedding

Cited by 14 publications

References 13 publications

Effect of deep-stacking broiler litter on pathogenic bacteria, intake, digestibility, microbial protein supply and rumen parameters in sheep

Effect of deep-stacking broiler litter on pathogenic bacteria, intake, digestibility, microbial protein supply and rumen parameters in sheep

Microbiological analysis of composts produced on South Carolina poultry farms

Effect of heating and aging of poultry litter on the persistence of enteric bacteria

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