Transmission of <i>Salmonella mbandaka</i> to cattle from contaminated feed

Jones, Philip W.; Collins, P.; Brown, Grafton Tyler; Aitken, Maureen M.

doi:10.1017/s002217240007011x

Cited by 50 publications

(34 citation statements)

References 11 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the original R medium is still used in epidemiological studies (Jones et al 1982(Jones et al , 1983 and even incubated at 43°C (Williams et al 1981). For this reason a comparative evaluation of R enrichinent media of different formulas, inoculated with different inocula, incubated at 37°C and at 43°C was made.…”

Section: Introductionmentioning

confidence: 99%

A comparison of the original Rappaport medium (R medium) and the Rappaport–Vassiliadis medium (RV medium) in the isolation of salmonellae from meat products

Vassiliadis

Kalapothaki

Mavrommati

et al. 1984

J. Hyg.

View full text Add to dashboard Cite

SUMMARYThe Rappaport-Vassiliadis enrichment medium (RV medium) in 10 ml quantities (RV/43°C, 10 ml) inoculated with 0-1 ml of pre-enrichment medium (P medium) was found more efficient in the isolation of salmonellae from 409 pre-enriched samples (mainly meat products), than the original Rappaport medium incubated at 43°C (R/43°C) and the RV medium in 5 ml quantities (RV/43°C, 5 ml) inoculated with 0-01 ml of P medium (P < 0-001, in both instances). Therefore, the inoculum from pre-enriched foods should not be less than 0-1 ml in 10 ml of RV medium.The RV/43°, 10 ml was also better (P < 0-01) in detecting samples containing salmonellas than the original Rappaport medium incubated at 37°C (R/37°C, 10 ml) and the modification R25 of R medium incubated at 37 'C. The R25 modification was used in 10 ml quantities (R25/37 'C, 10 ml) inoculated with 0-1 ml of P medium and in 5 ml quantities (R25/37°, 5 ml) inoculated with 0-01 ml of P medium. The last two R25 procedures were of the same efficiency in isolating salmonellas from meat products.

show abstract

Section: Introductionmentioning

confidence: 99%

A comparison of the original Rappaport medium (R medium) and the Rappaport–Vassiliadis medium (RV medium) in the isolation of salmonellae from meat products

Vassiliadis

Kalapothaki

Mavrommati

et al. 1984

J. Hyg.

View full text Add to dashboard Cite

show abstract

“…Animal feed is an important component in preharvest Salmonella control programs (3,7,13,17). Animal feed has been considered one transmission vehicle for food-borne pathogens such as Salmonella in various food animals, including cattle (6,14,16), swine (4,7,8,20,23), and poultry (2,15,21). Food-producing animals, including swine, are one of the primary sources of Salmonella enterica human infections, and contaminated feed is a recognized source of such infection of food animals (5) and thus present a potential public health hazard.…”

mentioning

confidence: 99%

Salmonella entericain Commercial Swine Feed and Subsequent Isolation of Phenotypically and Genotypically Related Strains from Fecal Samples

Molla

Sterman

Mathews

et al. 2010

Appl Environ Microbiol

View full text Add to dashboard Cite

The purpose of this study was to determine the occurrence and genotypic relatedness of Salmonella enterica isolates recovered from feed and fecal samples in commercial swine production units. Of 275 feed samples, Salmonella was detected in 10 feed samples that originated from 8 of 36 (22.2%) barns, with a prevalence of 3.6% (10/275 samples). In fecal samples, a prevalence of 17.2% was found at the early finishing stage (1,180/6,880 samples), with a significant reduction in prevalence (7.4%) when pigs reached market age (392/5,321 samples). Of the 280 Salmonella isolates systematically selected for further characterization, 50% of the feed isolates and 55.3% of the isolates of fecal origin showed similar phenotypes based on antimicrobial resistance patterns and serogrouping. About 44% of the isolates were multidrug resistant. Pulsed-field gel electrophoresis (PFGE) genotyping grouped the 46 representative isolates into five genotypic clusters, of which four of the clusters consisted of genotypically related isolates recovered from feed and fecal samples. The occurrence of genotypically related and, in some cases, clonal strains, including multidrug-resistant isolates in commercially processed feed and fecal samples, suggests the high significance of commercial feed as a potential vehicle of Salmonella transmission.

show abstract

“…The association of Salmonella enterica-contaminated feed with salmonellosis in humans, laboratory animals, poultry, cattle, horses, mink, swine, and dogs has been documented frequently in studies conducted in various countries (11,16,19,22,25,27,36,42,45). In addition, a recent review article has highlighted the association of animal feeds with human illness, and a recent opinion from the European Food Safety Authority (EFSA) recommended that microbiological criteria be implemented for Salmonella in feed (6,14).…”

mentioning

confidence: 99%

Accuracy and Sensitivity of Commercial PCR-Based Methods for Detection of Salmonella enterica in Feed

Koyuncu

Andersson

Häggblom

2010

Appl Environ Microbiol

View full text Add to dashboard Cite

The present study compared the performance of commercial PCR-based Salmonella enterica detection methods (BAX System Q7, the iQ-Check Salmonella II kit, and the TaqMan Salmonella enterica detection kit) with culturebased methods (modified semisolid Rappaport-Vassiliadis [MSRV] and NMKL71) in spiked and naturally contaminated samples of feed mill scrapings (FMS), palm kernel meal (PKM), pelleted feed (PF), rape seed meal (RSM), soybean meal (SM), and wheat grain (WG). When results from the various feeds were compared, the number of Salmonella enterica CFU/25 g required to produce a positive were as follows: PKM > FMS ‫؍‬ WG > RSM ‫؍‬ SM ‫؍‬ PF. These data are similar to those developed in earlier studies with culture-based Salmonella detection methods. PCR-based methods were performed similarly to culture-based methods, with respect to sensitivity and specificity. However, many PCR positives could not be confirmed by Salmonella isolation and for that reason the evaluated methods were found to be suitable only when rapid results were paramount. Nevertheless, PCR-based methods cannot presently replace culture-based methods when typing information is required for tracing studies or epidemiological investigations. The observed difference in detection levels is a potential problem when prevalence data are compared as well as when feed ingredients are tested for conformance with microbiological criteria. This paper also presents a statistical model that describes the detection probability when different levels (CFU) of Salmonella contamination are present in feed materials.

show abstract

Transmission of Salmonella mbandaka to cattle from contaminated feed

Cited by 50 publications

References 11 publications

A comparison of the original Rappaport medium (R medium) and the Rappaport–Vassiliadis medium (RV medium) in the isolation of salmonellae from meat products

A comparison of the original Rappaport medium (R medium) and the Rappaport–Vassiliadis medium (RV medium) in the isolation of salmonellae from meat products

Salmonella entericain Commercial Swine Feed and Subsequent Isolation of Phenotypically and Genotypically Related Strains from Fecal Samples

Accuracy and Sensitivity of Commercial PCR-Based Methods for Detection of Salmonella enterica in Feed

Contact Info

Product

Resources

About