<i>Salmonella</i> in sows: a longitudinal study 
in farrow-to-finish pig herds

Nollet, Nathalie; Houf, Kurt; Dewulf, Jeroen; Kruif, Aart de; Zutter, Lieven De; Maes, Dominiek

doi:10.1051/vetres:2005022

Cited by 50 publications

(51 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This analysis of Salmonella status in the latently infected farrow-to-finish herds corresponds with the findings of other authors (Nollet et al 2005;Farzan et al 2007;Rajic et al 2007) who demonstrated a low correlation between seropreva-lence of specific Salmonella antibodies and their isolation from swine faeces. The presence of high titre of specific antibodies does not always signify infection, but is indicative of previous exposure.…”

Section: Discussionsupporting

confidence: 90%

“…Breeding pigs, predominantly sows, may be an important source of dissemination of Salmonella throughout the pig production chain. After farrowing, faecal shedding of Salmonella increases in sows, contaminating pens and the environment which creates potential sources of infection for piglets (Nollet et al 2005). A direct relationship has been confirmed between breeder pig herd Salmonella prevalence in faeces (above 100) and findings of the same serotypes in ileocaecal lymph nodes and swabs from carcasses of fattening pigs at slaughter.…”

Section: Discussionmentioning

confidence: 81%

See 1 more Smart Citation

Serological and bacteriological evaluation of Salmonella status in swine herds

Šišák¹,

Havlíčková²,

Matiašovic³

et al. 2011

Czech J. Food Sci.

View full text Add to dashboard Cite

AbstractŠišák F., Havlíčková H., Matiašovic J., Karpíšková R. (2011): Serological and bacteriological evaluation of Salmonella status in swine herds. Czech J. Food Sci., 29 (Special Issue): S102-S108.The sera from 690 slaughtered fattening pigs from 15 farrow-to-finish swine herds (12 herds of unknown Salmonella status, 3 herds known as latently infected) in the Czech Republic were examined for Salmonella antibodies in a cross sectional study using an ELISA test. Salmonella seroprevalence ranging from 0% to 20% was found in 14 herds. Seroprevalence of 73.9 was found in 1 herd with previously unknown Salmonella status. A longitudinal study of the three previously identified latently infected herds found seroprevalence ranging from 23.9% to 83.4% in sows after farrowing. Salmonella findings from faeces in the farrowing sections ranged between 1.8 and 24.5, and in the environmental samples between 0 and 25. In weaned piglets, Salmonella findings from faeces ranged from 6.3 to 48.0, and in environmental samples from 0 to 90%. The most prevalent serotypes were S. Derby (56.8) and S. Typhimurium, phage type DT104 (18.5). The seroprevalence comparison in sows and slaughtered fattening pigs revealed variations in the course of Salmonella infection in swine herds.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 81%

Serological and bacteriological evaluation of Salmonella status in swine herds

Šišák¹,

Havlíčková²,

Matiašovic³

et al. 2011

Czech J. Food Sci.

View full text Add to dashboard Cite

show abstract

“…This information complements existing evidence, indicating that Salmonella spp. infection can occur in young pigs (Nollet et al, 2005a;Griffith et al, 2006). The percentage of seropositive piglets (48.8%) at 21 AE 3 days old may reflect the passive immune protection against Salmonella spp.…”

Section: Discussionmentioning

confidence: 99%

“…The association between stress and Salmonella spp. excretion has been previously described (Kranker et al, 2003;Nollet et al, 2005a;Griffith et al, 2006). Although there is no information about the degree of impact of transportation and commingling of litters, in three separate sites with all-in=all-out management systems, it was determined that transportation and litter commingling should be diminished to reduce Salmonella spp.…”

Section: Salmonella Pigs Serology Pfge and Multidrug Resistancementioning

confidence: 99%

Salmonella entericaSubclinical Infection: Bacteriological, Serological, Pulsed-Field Gel Electrophoresis, and Antimicrobial Resistance Profiles—Longitudinal Study in a Three-Site Farrow-to-Finish Farm

Vigo

Cappuccio

Piñeyro

et al. 2009

Foodborne Pathogens and Disease

View full text Add to dashboard Cite

The aim of this surveillance was to study both Salmonella spp. shedding patterns and the time course of serological response in farrow-to-finish reared pigs from a subclinically infected farm. Antimicrobial resistance profile, molecular subtyping, and the relationship among the isolates were determined by pulsed-field gel electrophoresis (PFGE). A farrow-to-finish farm of 6000 sows, with a history of Salmonella Typhimurium septicemia, was selected. A longitudinal bacteriological and serological study was conducted in 25 sows before farrowing (M=S1) and in 50 offspring at 21 (M=S2), 35 (M=S3), 65 (M=S4), 86 (M=S5), 128 (M=S6), and 165 (M=S7) days of age. Serum antibodies were tested using Herdcheck Ò Swine Salmonella antibody test kit (Idexx Laboratories, ME). Bacteria were isolated from pooled fecal samples. Suspected isolates were confirmed by conventional biochemical assays, and those identified as Salmonella spp. were serotyped. A variation between seropositive percentages and positive fecal samples was observed. Serologically positive pigs decreased from S1 to S4, and subsequently increased from S4 to S7. The percentages of fecal positive culture increased from M1 to M3, and then declined in M4, increased in M5, and were negative in M6 and M7.In the study three serovars, Salmonella 3,10:e,h:-, Salmonella Muenster, and Salmonella Bovismorbificans, were identified with low pathogenicity for swine. Three multidrug resistance strains (one belonged to Salmonella 3,10:e,h:-and two belonged to Salmonella Muenster) were found. PFGE results showed three different but closely related patterns among the 13 isolates of Salmonella Bovismorbificans, and two patterns for the three Salmonella Muenster and Salmonella 3,10:e,h:-isolates.This longitudinal study established critical points of Salmonella spp. infection in the farm and the production stages, where appropriate control measures must be taken. PFGE showed clonal relationships in each serovar. Antibiotic resistance profiles should be periodically included due to public health concerns.

show abstract

“…Es por esto que estos tratamientos en la actualidad son poco efectivos, como por ejemplo el uso de amoxicilina en personas 29 . Según el análisis exploratorio observado en la construcción del MCA, la variabilidad de el origen alimentario y animal indica que la mantención y diseminación de cepas resistentes se explicaría por factores como sistemas de producción, manejos de tratamientos antibióticos, contacto con reservorios naturales, entre otros 30,31 . Los valores de CMI que superan los niveles mí-nimos de interpretación de resistencia antibiótica, se relacionan con la expresión de ciertas enzimas que deben ser detectadas mediante estudios moleculares 32 .…”

Section: Discussionunclassified