The Epizootiology of<i>salmonella menston</i>infection of fowls and the effect of feeding poultry food artificially infected with salmonella

SUMMARYTwo small flocks of egg-laying hens, naturally infected with Salmonella enteritidis, were housed in individual cages so that their eggs could be identified.During a longitudinal study where the contents of 1119 eggs were examined, 11were positive for S. enteritidis. One isolate was phage type (PT) 33 the others were PT4. The production of infected eggs was clustered though intermittent. The positive eggs, which were produced by 10 of the 35 hens, were all found to contain fewer than 10 salmonellas. Some birds were also apparently carrying S. hadar PT14 as this organism was isolated from the contents of six cracked eggs.

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“…In this respect it differs from S. thompson (10), S. anatum (11) but behaves in a manner similar to S. pullorum (10) and S. menston (12).…”

Section: Discussionmentioning

confidence: 93%

Salmonella enteritidis phage type 4 from the contents of intact eggs: a study involving naturally infected hens

Baskerville²,

et al. 1989

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“…entérinais has previously been isolated from ovaries (Snoeyenbos et al, 1969). Other groups have found that other Salmonella serotypes, with the exception of 5. pullorum-S. gallinarum can also result in ovarian infections under experimental conditions (Gibbons & Moore, 1946;Gauger & Greaves, 1946;Mundt & Tugwell, 1958;Gordon & Tucker, 1965;Forsythe et al, 1967) in some cases following intravenous inoculation. All these workers report that the incidence of shell contamination was much higher than that of Sa/mone/Za-contaminated contents.…”

Section: Discussionmentioning

confidence: 99%

Experimental infection of egg‐laying hens withSalmonella enteritidisphage type 4

1991

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SUMMARYChickens were inoculated intravenously with 10 5 or 10 6 organisms. Heavy infection of the ovaries occurred and some infection persisted in this organ for several weeks. Most of the ovarian infections were confined to the interstitial tissues and not to the yolk contained in the large follicles. Infections of the ovary did not result from contamination from infected air sacs. None of 810 eggs laid contained S. enteritidis.Chickens infected orally gave similar results to those following intravenous inoculation although the number of isolations obtained from the caeca and cloaca were higher. S. enteritidis was isolated from two of 633 eggs in which the contents only were cultured and from 36 of 614 eggs in which both shell and contents were cultured.The serum IgG response to oral inoculation was monitored by an ELISA using a whole cell sonicate or lipopolysaccharide antigen. High titres of IgG were detected for 27 weeks after infection when the experiment was terminated.The experiments suggest that most infected eggs laid by 5. enteritidis-infected hens are surfacecontaminated and do not result from infected ovaries.

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“…The ease with which salmonellae in feedstuffs may colonize poultry flocks and lead to contamination of eggs with salmonellae is well documented (Gordon & Tucker, 1965;Crabb & Walker, 1971). There are several ways in which shell eggs can become contaminated, externally and internally, with microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Salmonella typhimuriumphage type 141 infections in Sheffield during 1984 and 1985: association with hens' eggs

Chapman

Rhodes²,

Rylands³

1988

Epidemiol. Infect.

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SUMMARYFood poisoning due toSalmonella typhimuriumphage type 141 was unusual inthe Sheffield area before 1984. The sudden increase in incidence of this phage type during 1984 and 1985, and its causative role in several small outbreaks in this period have been investigated. Epidemiological and laboratory investigations suggested that hens' eggs were the most likely source ofS. typhimuriumphage type 141.

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The Epizootiology ofsalmonella menstoninfection of fowls and the effect of feeding poultry food artificially infected with salmonella

Cited by 45 publications

References 11 publications

Salmonella enteritidis phage type 4 from the contents of intact eggs: a study involving naturally infected hens

Salmonella enteritidis phage type 4 from the contents of intact eggs: a study involving naturally infected hens

Experimental infection of egg‐laying hens withSalmonella enteritidisphage type 4

Salmonella typhimuriumphage type 141 infections in Sheffield during 1984 and 1985: association with hens' eggs

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