The role of visible faecal material as a vehicle for generic Escherichia coli, coliform, and other enterobacteria contaminating poultry carcasses during slaughtering

Jiménez, S.M.; Tiburzi, M.C.; Salsi, M.S.; Pirovani, María Élida; Moguilevsky, M. A.

doi:10.1046/j.1365-2672.2003.01993.x

Cited by 43 publications

(28 citation statements)

References 8 publications

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“…Recorded counts after evisceration of chicken (C2) varied among slaughterhouses, without a coherent pattern (Table 3), while the microbiological counts in the chicken carcasses after pre-chilling (C3) were higher in Sl2 when compared to Sl1 and Sl3 for all researched microbiological groups (p<0.0.5, Table 3). The higher temperatures in the chilling tanks from Sl2 when compared to Sl1 and Sl3 can explain these results (Table 5), showing that temperature and water renewal were more important as factors of microbiological control than chlorine, which on its own showed no effect, as also observed by Allen et al (2000), Jimenez et al (2003), Matias et al (2010), and Rodrigues et al (2008). Chilling is considered to play a major role in microbiological contamination during chicken slaughtering, and studies assessing the use of alternative procedures and equipment, such as spraying of cold air instead of immersion in cold water, indicate its relevance in reducing the counts in chicken carcasses (Hutchison et al, 2006;Vaidya et al, 2005;Zweifel et al, 2015).…”

Section: Methodsmentioning

confidence: 59%

Self-Monitoring Microbiological Criteria for the Assessment of Hygienic Procedures During Chicken Slaughtering

Dias

Dianin

Bersot

et al. 2017

Rev. Bras. Cienc. Avic.

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Self-monitoring procedures are adopted by food industries to ensure the quality and safety of final products, considering hygiene and processing criteria. This study aimed to evaluate contamination in chicken processing, considering the microbiological criteria proposed by self-monitoring systems. Environmental samples from reception, slaughtering and processing were collected from three chicken slaughterhouses (Sl1, Sl2, Sl3), and subjected to microbiological analysis to enumerate hygiene indicators microorganisms: mesophilic aerobes, enterobacteriaceae, coliforms and Escherichia coli. The obtained counts were converted to log 10 , compared by ANOVA (p<0.05) and self-monitoring microbiological criteria for each slaughterhouse were considered. In reception, the mean counts of hygiene indicator microorganisms in Sl3 were significantly higher than mean counts observed in Sl1 and Sl2 (p<0.05). During slaughtering, the chilling was enough to decrease the mean counts of all hygiene indicator microorganisms in Sl1, Sl2 and Sl3 (p<0.05). Based on self-monitoring criteria, in the first stages of slaughtering the facilities presented higher frequencies of chicken carcasses with counts above their respective reference values. Sl02 presented carcasses with higher counts after final washing, resulting in environmental samples with higher counts when compared to Sl1 and Sl3 (p<0.05). Even considering the high counts observed in the initial steps of chicken processing and slaughtering, the results indicated the efficacy of hygienic procedures in providing chicken carcasses and cuts with low microbiological contamination. Self-monitoring criteria supported these results, and the high levels of microbial contamination during the initial steps of slaughtering require subsequent antimicrobial hygienic procedures.

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Section: Methodsmentioning

confidence: 59%

Self-Monitoring Microbiological Criteria for the Assessment of Hygienic Procedures During Chicken Slaughtering

Dias

Dianin

Bersot

et al. 2017

Rev. Bras. Cienc. Avic.

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“…In addition, studies have also revealed that strains of E. coli can be isolated within 40 feet radius outside the poultry house (Davis and Morishita, 2005). Thus, indicating that the reason why the pathogen is considered as a major contaminant in poultry processing plant ( Jimenez et al, 2003).The findings further provides substantial evidence as to the reason why E. coli is the most predominantly isolated bacteria obtained from the liver samples. Furthermore, the presence of the isolated pathogens can also be due to carcass contamination or the presence of ongoing infection prior to slaughter.…”

mentioning

confidence: 72%

Survey of Hepatic Lesions and Incriminating Pathogens in Rural Scavenger Chickens in Maiduguri, North-Eastern Nigeria

Gambo¹

2016

Adv. Anim. Vet. Sci.

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| The survey of hepatic lesions in rural scavenger chickens was carried out in Maiduguri live chicken market. A total of 100 liver tissue and swab samples were collected for histopathological and bacteriological analysis. The result obtained revealed that 20 % of the liver were enlarged, 57% have variable degree of hemorrhage while 77% were pale. In addition, friability and fibrin deposits were observed in 3% and 5% of the liver respectively. Similarly, histopathologic lesions observed, includes varying degree of severe congestion of the central veins, severe mononuclear cellular infiltration around the portal triad, necrosis and degeneration of the hepatocytes. Bacteriological analysis revealed that out of the hundred liver swabs collected, 77 showed positive growth. However, 63 out of the 77 bacteria isolated showed mixed growth while the remaining 14 isolates showed single growths on both MacConkey and blood agar respectively. In addition, out of the 115 bacteria isolated, 37 (32.2%) were Enterococcus specie, 27 (23.5%) were Escherichia coli, 29 (25.2%) were Corynebacteria specie while 15 (13%) and 7(6.1%) of the isolates were Bacillus subtilis and Staphylococcus aureus respectively. Varying degrees of hepatic lesions and incriminating pathogens were observed in all liver samples.

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“…Jimenez et al (2003) reported that 11.3% of carcasses showed faecal material and 5.2% showed bile on the surface after the evisceration step. The absence of Escherichia coli over the entire period of storage or of other coliform microflora at the beginning of storage is indicative of a good hygienic profile of samples (Zeitoun et al 1994).…”

Section: Discussionmentioning

confidence: 99%

Formation of Biogenic Amines in Chicken Meat Stored under Modified Atmosphere

et al. 2010

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The aim of the study was to investigate the effects of two modified atmospheres with a different combination of gases on selected groups of microorganisms and on concentrations of biogenic amines (BAs) in samples of poultry breast muscle. The samples were packaged under modified atmosphere A (75% O 2 a 25% CO 2 ) or B (75% N 2 and 25% CO 2 ) and stored at temperatures from +2 to +4 °C for 14 days. During the storage period, O 2 concentrations in modified atmosphere A (MA A) decreased from the initial 74.8 ± 0.3% to 55.9 ± 6.6% at the end of the storage period. In all samples, counts of psychrotrophic bacteria counts, Brochothrix thermosphacta, lactic acid bacteria and coliform microorganism were determined. The tests were made on the packaging day, and then after three, nine and fourteen days of storage. At the end of the storage period, higher numbers of psychrotrophic bacteria (6.5 ± 0.7 log 10 cfu·g -1 ), Brochothrix thermosphacta (4.8 ± 0.3 log 10 cfu·g -1 ) and lactic acid bacteria (1.7 ± 0.4 log 10 cfu·g -1 ) were found on samples packaged under MA A. Samples packaged under modified atmosphere B on the other hand contained higher numbers of coliform bacteria (4.1 ± 0.6 log 10 cfu·g -1 ) at the end of the storage period. In addition to microbiological indicators, concentrations of biogenic amines (putrescine, cadaverine, histamine, tyramine, spermine, spermidine and β-phenylethylamine) were also determined. In fresh samples and after three days of storage, only spermine and spermidine were found. After 9 and 14 days, also other BAs were detected. The biogenic amine totals at the end of the storage period was 60.0 ± 13.2 mg·kg -1 in samples packaged under MA A and 129.0 ± 41.3 mg·kg -1 in samples packaged under MA B. The most abundantly represented biogenic amines in samples packaged under MA A were putrescine and spermine (49.7 and 24.8%, respectively, at the end of the storage period), and putrescine and cadaverine in samples packaged under MA B (47.0 and 32.9 %, respectively, at the end of the storage period).

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The role of visible faecal material as a vehicle for generic Escherichia coli, coliform, and other enterobacteria contaminating poultry carcasses during slaughtering

Cited by 43 publications

References 8 publications

Self-Monitoring Microbiological Criteria for the Assessment of Hygienic Procedures During Chicken Slaughtering

Self-Monitoring Microbiological Criteria for the Assessment of Hygienic Procedures During Chicken Slaughtering

Survey of Hepatic Lesions and Incriminating Pathogens in Rural Scavenger Chickens in Maiduguri, North-Eastern Nigeria

Formation of Biogenic Amines in Chicken Meat Stored under Modified Atmosphere

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