A Survey of Bovine Salmonellosis in Mid and West Wales

Field, H. J.

doi:10.1016/s0372-5545(17)30102-5

Cited by 7 publications

(24 citation statements)

References 7 publications

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“…In this study, Salmonella was most frequently isolated during the period August to October. This is in agreement with previous reports of variations in the seasonal incidence of Salmonella and may be related to husbandry practices such as pasture grazing and calving (Field 1948; Hughes et al. 1971; Taylor and Kilpatrick 1975; Hollinger et al.…”

Section: Discussionsupporting

confidence: 93%

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The prevalence of Salmonella spp. in bovine faecal, rumen and carcass samples at a commercial abattoir

et al. 2003

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Aims: To determine the prevalence, serotype and antibiotic resistance profile of Salmonella isolates in cattle and on carcasses at a commercial Irish abattoir. Methods and Results: Faecal, rumen and carcass samples were collected from a beef abattoir over a 12-month period and examined for the presence of Salmonella spp. Isolates were serotyped, phage typed (when serotype was found to be S. Typhimurium) and tested for susceptibility to a panel of antibiotics. Salmonella was isolated from 2% of faecal, 2% of rumen and 7AE6% of carcass samples. Salmonella was most frequently isolated from samples taken during the period August to October. S. Dublin was isolated from 72% of positive samples. S. Agona and S. Typhimurium definitive type (DT)104 were each isolated from 14% of positive samples. All S. Typhimurium DT104 isolates were resistant to ampicillin, chloramphenicol, streptomycin, sulphafurazole and tetracycline (ACSSuT). On occasion, from a single animal, the same serotype was isolated from more than one sample (i.e. faeces and rumen; faeces and carcass; rumen and carcass; faeces, rumen and carcass). Conclusions: Salmonella is present in cattle at slaughter and on beef carcasses at an Irish abattoir, with a higher frequency of occurrence during the period August to October. Most isolates from the study are not commonly associated with human clinical infection, with the exception of S. Typhimurium DT104 (R-type ACSSuT). Significance and Impact of the Study: This study provides epidemiological data that is necessary for the understanding of beef as a source of human Salmonella infection.

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Section: Discussionsupporting

confidence: 93%

“…Salmonella has been widely reported in cattle (Field 1948; Hughes et al. 1971; Wray and Sojka 1977; Hollinger et al.…”

Section: Introductionmentioning

confidence: 99%

The prevalence of Salmonella spp. in bovine faecal, rumen and carcass samples at a commercial abattoir

et al. 2003

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“…Fecal culture-positive animals were sampled repeatedly in order to identify active carriers. Active carriers were defined as animals with at least three successive serovar Dublin-positive fecal cultures with a sampling interval of at least 14 days, according to the definition of Field (2). Eighteen active carriers were identified.…”

Section: Study Design (I) Infected and Control Farmsmentioning

confidence: 99%

“…Five fecal culture-positive animals, from two farms, were purchased for moredetailed studies on fecal shedding and serology and for postmortem examination. Two animals from farm A and one animal from farm B were active carriers according to the definition of Field (2). The other two animals from farm B were on two occasions fecal culture-positive for serovar Dublin, with an interval of 7 months, and could not be classified as active carriers.…”

Section: Study Design (I) Infected and Control Farmsmentioning

confidence: 99%

Evaluation of Three Newly Developed Enzyme-Linked Immunosorbent Assays and Two Agglutination Tests for DetectingSalmonella entericasubsp.entericaSerovar Dublin Infections in Dairy Cattle

Veling

Zijderveld²,

Bemmel³

et al. 2000

J Clin Microbiol

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In this study test characteristics of three newly developed enzyme-linked immunosorbent assays (ELISAs) for Salmonella enterica subsp. enterica serovar Dublin were evaluated and compared with two agglutination tests. The ELISAs involved were an indirect ELISA with serovar Dublin lipopolysaccharide (LPS ELISA), an indirect ELISA with serovar Dublin flagellar antigen (GP ELISA), and a double-antibody sandwich blocking ELISA that uses monoclonal antibodies against S. enterica subsp.enterica serovar Enteritidis flagellin (GM-DAS ELISA). The agglutination tests involved were two routine serum agglutination tests with either somatic (O) or flagellar (H) antigen. Diagnostic specificity of the three ELISAs was determined using 840 serum samples from seven dairy herds without any history of serovar Dublin infection. Cutoff values at a titer of 100, 100, and 10, respectively, for the LPS ELISA, GP ELISA, and GM-DAS blocking ELISA resulted in a specificity of 99.3, 100, and 100%, respectively. Using these cutoff values the LPS ELISA, GP ELISA, and GM-DAS ELISA were able to detect, respectively, 30, 46, and 38% of 50 fecal culture-positive animals from 13 herds with a recent serovar Dublin infection. With the same cutoff values, active carriers (n = 18) were detected for 94.4% with the LPS ELISA and for 100% with the GP and GM-DAS ELISAs. Kappa values determined on the results of all tests from 8 of the 13 serovar Dublin-infected herds and the 7 control herds demonstrated a good correlation between the results of all ELISAs and the H-agglutination test. The results of the O-agglutination test failed to correlate with those of the other tests. Using a set of sera from 170 aborting cows (with 25 abortions due to serovar Dublin), test results of the ELISAs and the H-agglutination test were comparable. The H-agglutination test may be used successfully for single sample testing, especially to diagnose abortion due to serovar Dublin. It is concluded that the ELISAs are useful diagnostic tools in serovar Dublin control programs and that they are preferred to agglutination tests for reasons of automation and costs.

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“…Agglutinating antibodies to 8. dublin have been measured in serum from naturally infected cows affected with dysentery (Field, 1948) and abortion (Hinton, 1973), and from 'carrier' animals (Field, 1948;Richardson, 1973;Sojka, Thompson & Hudson, 1974). In the last situation they have been found to be of limited diagnostic value.…”

Section: Introductionmentioning

confidence: 99%

The serology of experimental Salmonella dublin infections of cattle

Hall

Jones

Aitken

et al. 1978

J. Hyg.

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Agglutinating antibodies to somatic "O" and flagellar "H" antigens of S. dublin were measured in the serum of 43 pregnant heifers before intravenous or oral infection with S. dublin and in the serum of 21 uninfected control animals. The data from these animals were analysed statistically and a titre of 1/80, to both antigens, has been interpreted as of doubtful significance and a titre of 1/160 to both antigens, has been interpreted as significantly raised. Animals in which fetal infection occurred after challenge by either the intravenous or oral route developed significant increases in "H" and "O" titres indicating the value of measure "H" titres in the diagnosis of S. dublin abortion. In animals which were infected orally and in which infection appeared to be confined to the alimentary tract the "H" titre did not become significantly raised. Lack of correlation between antibody titres and faecal excretion of S. dublin and persistence of infection in carcasses confirms that the serum agglutination test is of no value in detecting latent carriers.

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A Survey of Bovine Salmonellosis in Mid and West Wales

Cited by 7 publications

References 7 publications

The prevalence of Salmonella spp. in bovine faecal, rumen and carcass samples at a commercial abattoir

The prevalence of Salmonella spp. in bovine faecal, rumen and carcass samples at a commercial abattoir

Evaluation of Three Newly Developed Enzyme-Linked Immunosorbent Assays and Two Agglutination Tests for DetectingSalmonella entericasubsp.entericaSerovar Dublin Infections in Dairy Cattle

The serology of experimental Salmonella dublin infections of cattle

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