Laboratory heating studies with Salmonella spp. and Escherichia coli in organic matter, with a view to decontamination of poultry houses

Gradel, Kim Oren; Jørgensen, J.Chr.; Andersen, Jens S.; Corry, Janet E L

doi:10.1046/j.1365-2672.2003.01933.x

Cited by 22 publications

(16 citation statements)

References 31 publications

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“…This difference in the inhibitory effect between feed and feces could be attributed to the protective effect of fats [38,39], carbohydrates [38,40,41], or proteins in the feed on bacteria. Previously, Gradel et al [42] reported a greater relative survivability of Salmonella in dried feed than in dried feces. The antibacterial effect of TC was more pronounced (P ≤ 0.001) on C. jejuni than S. Enteritidis, particularly in water samples containing 1% feces or feed ( Figure 1B, 1C, 2B, 2C, 3B, 3C, 4B, and 4C) compared with Salmonella.…”

Section: Resultsmentioning

confidence: 98%

Antibacterial Effect of Trans-Cinnamaldehyde on Salmonella Enteritidis and Campylobacter jejuni in Chicken Drinking Water ,

Johny

Darre

Hoagland

et al. 2008

Journal of Applied Poultry Research

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Primary Audience: Flock Supervisors, Quality Assurance and Laboratory Personnel, Researchers and Veterinarians SUMMARYSalmonella Enteritidis and Campylobacter jejuni are 2 major foodborne pathogens in the United States, estimated to cause more than 3 million cases of human illness annually. Chickens are the natural hosts of these bacteria, and their drinking water can be a source of S. Enteritidis and C. jejuni, contributing to the colonization of birds. In this study, trans-cinnamaldehyde (TC), a natural, generally recognized as safe ingredient in cinnamon oil was evaluated for its efficacy to inactivate S. Enteritidis and C. jejuni in the drinking water of chickens. Well water containing 0, 0.016, 0.03, and 0.06% TC was inoculated with a 5-strain mixture of S. Enteritidis or C. jejuni (~6 log 10 cells/mL). Water samples containing 1% chicken feces or feed were also included. The samples were incubated at 12.5 or 25°C for 7 d and analyzed for bacterial populations on d 0, 1, 3, 5, and 7. Duplicate samples of treatments and control were included, and the study was replicated 3 times. Trans-cinnamaldehyde at 0.06% inactivated Salmonella completely after 24 h in water with 1% feces at both temperatures. In water containing 1% feed, TC (0.06%) reduced S. Enteritidis to undetectable levels after 3 d at 12.5°C or 7 d at 25°C. Presence of feed or feces in water reduced the antibacterial effect (P < 0.001) of TC. The effect of TC on C. jejuni was more pronounced than that on S. Enteritidis. The TC at 0.06% completely inactivated the pathogen after 1 d of incubation at both temperatures. The presence of feces or feed did not have any effect (P > 0.001) on the antibacterial property of TC on C. jejuni. Results indicate that TC is effective in killing S. Enteritidis and C. jejuni in chicken drinking water and may decrease the likelihood that water will contribute to colonization of chickens by these pathogens.

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Section: Resultsmentioning

confidence: 98%

Antibacterial Effect of Trans-Cinnamaldehyde on Salmonella Enteritidis and Campylobacter jejuni in Chicken Drinking Water ,

Johny

Darre

Hoagland

et al. 2008

Journal of Applied Poultry Research

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“…Because of the profound ability to irreversibly bind to different types of biotic and abiotic surfaces, J HELLENIC VET MED SOC 2018, 69(2) ΠΕΚΕ 2018, 69 (2) processing and storage facilities of poultry products (Gradel et al, 2003;Gradel et al, 2004;McKee et al, 2008;Díez-García et al, 2012). Biofilm is an important risk factor in feed contamination, and one of the critical points of controlling Salmonella spp.…”

Section: B I O F I L M F O R M I N G C a Pa C I T Y O F Salmonella Spmentioning

confidence: 99%

Salmonella spp. in poultry: a constant challenge and new insights

Velhner

Milanov

Kozoderović

2018

J Hellenic Vet Med Soc

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ABSTRACT. The knowledge about virulence mechanisms, resistance to antimicrobial agents and the biofilm formation ability of Salmonella spp. in poultry industry has been expanded over the years. However, in spite of the research efforts and significant investments to improve management systems in poultry industry, it has become evident that none of the methods applied in all stages of food production chain are 100% effective in eliminating Salmonella spp. Different serovars are manifesting different mechanisms of invasiveness which depend on their ability to invade lower zones of the lamina propria, their ability to gain accesses to parenchymatous organs and survive in macrophages. The ubiquitous nature of Salmonella spp. due to their adaptation to animal and plant hosts, as well as their survival in hostile environments and their enhanced capacity to produce biofilms, contribute to a long lasting contamination of the environment, feed and animals. The emergency and spread of antimicrobial resistances in Salmonella spp. raise additional concerns.

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“…Consequently, the growth and survival of an organism is also influenced by temperature. The killing action of heat is a time-temperature dependent process (Gradel et al, 2003). Practical procedures by which heat is employed are divided into two categories: (a) moist heat and (b) dry heat.…”

Section: ×10mentioning

confidence: 99%

Drying of Poultry Manure for Use as Animal Feed

Ghaly¹,

MacDonald²

2012

American Journal of Agricultural and Biological Sciences

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The poultry industry is one of the largest and fastest growing sectors of livestock production in the world. The estimated 2010 world flock was over 18 billion birds with a yearly manure output of 22 million tonnes. Storage and disposal of raw poultry manure have become an environmental problem because of the associated air, water and soil pollution. Environmental and health problems such as odor and pathogens that may arise during and after land application of raw manure can be eliminated by drying. Dried manure can be utilized as a feed for ruminants because of its high nitrogen content. The aim of this study was to investigate the effects of drying temperature and depth, as well as the nutritional profile of dried manure and its suitability as an animal feed. Dried poultry manure contained sufficient levels of digestible energy, crude fiber, crude protein, crude fat, cobalt and iodine. Although dried poultry manure did not meet the dietary requirements for calcium, chloride, magnesium, phosphorus, potassium, sodium, copper, iron, manganese, selenium, sulfur or zinc it could be used as a feed stuff for ruminants after supplementation with the required nutrients. Heated air drying was most efficient at 60°C and at a depth of 3 cm. During drying poultry manure decreased in pH (8.4-6.9), protein content (43 to 39-43%) and amino acid content. The greatest reductions in microbial population occurred at the highest temperature (60°C) and the lowest manure depth (1cm). Reductions in the number of bacteria, mold/yeast and E. coli were 65-99, 74-99 and 99.97% respectively, Salmonellae was not detected in the dried product. Dried poultry manure was found to have a non-offensive odor. Odor intensity and offensiveness were reduced by 65 and 69% respectively during drying. Thin layer heated air drying of poultry manure between 40 and 60°C created a safe and nutritionally appropriate feed for ruminants.

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Laboratory heating studies with Salmonella spp. and Escherichia coli in organic matter, with a view to decontamination of poultry houses

Cited by 22 publications

References 31 publications

Antibacterial Effect of Trans-Cinnamaldehyde on Salmonella Enteritidis and Campylobacter jejuni in Chicken Drinking Water ,

Antibacterial Effect of Trans-Cinnamaldehyde on Salmonella Enteritidis and Campylobacter jejuni in Chicken Drinking Water ,

Salmonella spp. in poultry: a constant challenge and new insights

Drying of Poultry Manure for Use as Animal Feed

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