Comparison of three commercial competitive-exclusion products for controlling Salmonella colonization of broilers in Brazil

J Food Prot. 2003 Mar;66(3):490-2. doi: 10.4315/0362-028x-66.3.490.


In this study, a new competitive-exclusion (CE) product, Mucosal Starter Culture (MSC), was compared with two other CE products (Aviguard and Avifree) commercially available in Brazil to evaluate their ability to protect newly hatched chicks against colonization by a strain of Salmonella Kedougou. This study was based on a previously published and recommended method for such products. Separate groups of the chicks were dosed orally with the respective treatment materials and challenged 24 h later, and their ceca were examined for Salmonella 5 days after challenge. Under the test conditions, only MSC and Aviguard gave statistically significant (P < 0.05) protection to the chicks, but the MSC treatment yielded the lowest mean level of cecal carriage and the smallest proportion of Salmonella-positive birds.

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • Brazil
  • Cecum / microbiology
  • Chickens*
  • Colony Count, Microbial
  • Food Microbiology
  • Poultry Diseases / microbiology
  • Poultry Diseases / prevention & control*
  • Salmonella / growth & development*
  • Salmonella Infections, Animal / microbiology
  • Salmonella Infections, Animal / prevention & control*