The main objective was to estimate the bacteriological farm prevalence of Salmonella infections on 89 finishing farms in Alberta. Furthermore, the pattern of almonella farm infections over time, distribution within the farm environment and the serotype distribution were investigated. On a farm level, at least one Salmonella positive fecal sample was detected from 51.68% of participating farms. Finishing farms with no positive Salmonella samples on one sampling occasion might have one or more positive samples on other occasions. Classifying a farm based on a single sampling may not be adequate to understand the Salmonella farm status. More than 95% of Salmonella isolates belonged to the serogroups B, C I or D I, while the most frequent serotypes were S. derby, S. infantis and S. typhimurium. A good correlation between serology based on the mix- ELISA and culture based on pen fecal pools was observed on a farm level. High recovery rates from environmental samples suggest that an environment contaminated with Salmonella may contribute to the persistence of Salmonella within a farm.