Evidence of sheep and abattoir environment as important reservoirs of multidrug resistant Salmonella and extended-spectrum beta-lactamase Escherichia coli

Atlaw, Nigatu Aklilu; Keelara, Shivaramu; Correa, María T.; Foster, Derek M.; Gebreyes, Wondwossen A.; Aı̈dara-Kane, Awa; Harden, Lyndy; Thakur, Siddhartha; Fedorka-Cray, Paula J.

doi:10.1016/j.ijfoodmicro.2021.109516

Cited by 16 publications

(12 citation statements)

References 55 publications

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“…Generally, L. monocytogenes serotype 4b is responsible for up to 50% of human listeriosis cases globally, whereas serotype 1/2a is more frequently isolated from food products [ 34 ]. Regarding ESBL E. coli , Atlaw et al [ 35 ] reported that the prevalence of ESBL E. coli isolated from sheep carcasses in the U.S. was 10.2%, which is lower compared to the prevalence in this study. The lower prevalence may be explained by the sanitary dressing procedures followed in U.S. abattoirs and the application of lactic acid carcass decontamination usually performed [ 13 , 22 , 23 ].…”

Section: Discussioncontrasting

confidence: 79%

A Comparative Study on Microbiological and Chemical Characteristics of Small Ruminant Carcasses from Abattoirs in Greece

Tsitsos

Εconomou

Chouliara

et al. 2022

Foods

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Meat quality dictates consumer preferences with hygiene forming a key component, especially in meat types with declining popularity, such as sheep and goat meat. Aiming to increase the marketability of sheep and goat meat, we examined 370 sheep and goat carcasses from two abattoirs in Greece. Tests included enumeration of the total mesophilic viable count, total psychrophilic viable count and coliform count, and detection of Salmonella spp., Listeria monocytogenes and presumptive ESBL Escherichia coli. Moreover, designated samples of meat were used to measure pH, moisture, total fat and protein content. Goat carcasses had significantly higher microbial counts compared to sheep carcasses. Lamb and kid carcasses had larger TMVC, TPVC and coliform counts compared to carcasses from adult animals. One strain of L. monocytogenes (0.8%), typed as serovar 1/2a (3a), was isolated from one adult sheep carcass. Twelve strains of ESBL Escherichia coli (25%) were isolated; there were not any strains of Salmonella spp. The average values of pH, moisture, total fat and total protein were 5.83%, 67.76%, 7.21% and 21.31%, respectively, for sheep carcasses and 5.70%, 68.2%, 5.69% and 24.10%, respectively, for goat carcasses. The results showed a small deviation in assessed parameters, implying the uniformity of the conditions concerning rearing and slaughtering.

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Section: Discussioncontrasting

confidence: 79%

A Comparative Study on Microbiological and Chemical Characteristics of Small Ruminant Carcasses from Abattoirs in Greece

Tsitsos

Εconomou

Chouliara

et al. 2022

Foods

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“…This is a startling discovery, as until now, sheep-origin E. coli resistance has been neglected. Recent studies have confirmed the presence of MDR ESBL-producing E. coli in sheep in Pakistan, Chile, Brazil, Portugal, and the United States ( 24 – 28 ). To the best of our knowledge, this is the first report of the multidrug resistance determinants of ESBL-producing E. coli isolates of sheep origin in China.…”

Section: Discussionmentioning

confidence: 90%

Characterization of Extended-Spectrum β-Lactamase-Producing Escherichia coli Isolates That Cause Diarrhea in Sheep in Northwest China

Zhao

Zhou

et al. 2022

Microbiol Spectr

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“…Another study of sheep lairage showed that both Salmonella spp. and ESBL‐producing E coli were more commonly isolated from the lairage environment than from the animals themselves, demonstrating the potential importance of reservoir status of the lairage (Atlaw et al., 2022 ).…”

Section: Assessmentmentioning

confidence: 99%

Transmission of antimicrobial resistance (AMR) during animal transport

Koutsoumanis¹,

Allende²,

Álvarez‐Ordóñez³

et al. 2022

EFS2

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The transmission of antimicrobial resistance (AMR) between food‐producing animals (poultry, cattle and pigs) during short journeys (< 8 h) and long journeys (> 8 h) directed to other farms or to the slaughterhouse lairage (directly or with intermediate stops at assembly centres or control posts, mainly transported by road) was assessed. Among the identified risk factors contributing to the probability of transmission of antimicrobial‐resistant bacteria (ARB) and antimicrobial resistance genes (ARGs), the ones considered more important are the resistance status (presence of ARB/ARGs) of the animals pre‐transport, increased faecal shedding, hygiene of the areas and vehicles, exposure to other animals carrying and/or shedding ARB/ARGs (especially between animals of different AMR loads and/or ARB/ARG types), exposure to contaminated lairage areas and duration of transport. There are nevertheless no data whereby differences between journeys shorter or longer than 8 h can be assessed. Strategies that would reduce the probability of AMR transmission, for all animal categories include minimising the duration of transport, proper cleaning and disinfection, appropriate transport planning, organising the transport in relation to AMR criteria (transport logistics), improving animal health and welfare and/or biosecurity immediately prior to and during transport, ensuring the thermal comfort of the animals and animal segregation. Most of the aforementioned measures have similar validity if applied at lairage, assembly centres and control posts. Data gaps relating to the risk factors and the effectiveness of mitigation measures have been identified, with consequent research needs in both the short and longer term listed. Quantification of the impact of animal transportation compared to the contribution of other stages of the food‐production chain, and the interplay of duration with all risk factors on the transmission of ARB/ARGs during transport and journey breaks, were identified as urgent research needs.

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Evidence of sheep and abattoir environment as important reservoirs of multidrug resistant Salmonella and extended-spectrum beta-lactamase Escherichia coli

Cited by 16 publications

References 55 publications

A Comparative Study on Microbiological and Chemical Characteristics of Small Ruminant Carcasses from Abattoirs in Greece

A Comparative Study on Microbiological and Chemical Characteristics of Small Ruminant Carcasses from Abattoirs in Greece

Characterization of Extended-Spectrum β-Lactamase-Producing Escherichia coli Isolates That Cause Diarrhea in Sheep in Northwest China

Transmission of antimicrobial resistance (AMR) during animal transport

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