title: Reduction of subclinical Salmonella infection in fattening pigs after dietary supplementation with a ß-galactomannan oligosaccharide.
abstract: OBJECTIVE
  To assess the efficacy of a β-galactomannan oligosaccharide (ß-GMOS) for the control of Salmonella infection in fattening pigs.
  
  
  RESULTS
  Three different doses (0.5, 3 and 2 kg ß-GMOS per ton of feed) were used during the entire period of growing in three similar and independent field trials carried out in a small fattening unit (≈ 100 pigs). Treatment was randomly assigned to half of the pens. Individual serum samples (20-25 per group) were collected at different times during the fattening period and a similar number of faecal samples during the fattening period and at slaughter. In addition, mesenteric lymph nodes were collected at slaughter. Herdcheck(®) Swine Salmonella ELISA was used for serological analyses, the ISO 6579:2002/Amd 1 : 2007 for bacteriology and the PFGE for molecular characterization of Salmonella strains. The addition of ≥ 2 kg t(-1) of ß-GMOS to the pig diet during the entire fattening period was associated with a reduction in Salmonella prevalence, shedding and seroconversion.
  
  
  CONCLUSIONS
  Feed supplementation with ß-GMOS may be a useful complementary tool for the control of salmonellosis in fattening pigs.
  
  
  CONCLUSIONS
  ß-GMOS may be a complementary way of reducing Salmonella shedding and infection in fattening pigs.
authors.affiliation: Centro de Investigación y Tecnología Agroalimentaria de Aragón, Zaragoza, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Andrés-Barranco
authors.forename: J P
authors.initials: JP
authors.lastname: Vico
authors.forename: M J
authors.initials: MJ
authors.lastname: Grilló
authors.forename: R C
authors.initials: RC
authors.lastname: Mainar-Jaime
mesh_terms: D000818:Animals; D057138:Bacterial Shedding; D019587:Dietary Supplements; D005690:Galactose / Q000031:analogs & derivatives; D008351:Mannans / Q000008:administration & dosage* / Q000627:therapeutic use; D009844:Oligosaccharides / Q000008:administration & dosage / Q000627:therapeutic use; D012475:Salmonella / Q000145:classification / Q000276:immunology / Q000302:isolation & purification; D012481:Salmonella Infections, Animal / Q000178:diet therapy* / Q000382:microbiology; D016036:Seroepidemiologic Studies; D013552:Swine; D013553:Swine Diseases / Q000178:diet therapy* / Q000382:microbiology
chemical_list: D008351:Mannans; D009844:Oligosaccharides; C012990:galactomannan; D005690:Galactose
keywords: Salmonella; control; food safety; mannan oligosaccharides; pigs; pulsed-field gel electrophoresis