Related Experiment Video
Updated: Sep 26, 2026
Modified Most Probable Number Assay to Quantify Salmonella in Raw and Ready-to-Cook Chicken Products
Published on: January 31, 2025
Comparison of three commercial competitive-exclusion products for controlling Salmonella colonization of broilers in
A J P Ferreira1, C S A Ferreira, T Knobl
1Department of Pathology, Faculty of Veterinary Medicine and Animal Husbandry, University of Sao Paulo, Avenida Corifeu de Azevedo Marques, 2720, Sao Paulo, Brazil.
Abstract:
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.
