Observations on the distribution and control of Salmonella species in two integrated broiler companies

Abstract

The effectiveness of cleaning and disinfecting broiler farms and the persistence of Salmonella species in two integrated broiler companies was investigated for two years. Both companies used a cleaning and disinfection regime which included the application of a spray of phenolic disinfectant followed by fogging with formaldehyde solution, and this was highly effective in preventing carry-over of infection in the broiler houses. The disinfection of service areas and areas outside the houses was less effective but it had no influence on the Salmonella status of later flocks. Both companies had persistent problems with the contamination of pellet cooling systems in their feedmills with Salmonella 4, 12:d:- in company A, and with Salmonella binza and Salmonella ohio in company B. The hatcher incubators of both companies were also persistently contaminated with Salmonella livingstone and Salmonella thomasville in company A and with Salmonella senftenberg in company B. At both companies sites Salmonella enteritidis and Salmonella typhimurium Tr104 were also isolated occasionally from various locations.

Strategies to control Salmonella in the broiler production chain

“…Floors were not disinfected in 15 out of 85 farms (Rose et al, 2003). In a study in the UK using floor sweepings, 25 and 42% of analyzed samples were found Salmonella positive in 2 Salmonella infected broiler farms (Davies et al, 2001). The number of positive samples was reduced to 1 and 6% after cleaning and disinfection, respectively.…”

Prévalence de la contamination parSalmonellades élevages de poulet de chair au Maroc

“…La viande de volaille est un vecteur important de la transmission, responsable de la plupart des cas humains de salmonelloses (Davies et al, 2001).…”

Salmonella contamination of cereal ingredients for animal feeds

“…The presence of Salmonella in animal feeds is well-established as a public health issue (EFSA, 2008), and links have been documented between Salmonella contamination of animal feed and the carriage of Salmonella by important livestock species (Newell et al, 1959;Zecha et al, 1977;Glickman et al, 1981;Shapcott, 1985;Primm, 1998;Davies et al, 2001;Davis et al, 2003;Österberg et al, 2006). Salmonella is isolated regularly from cereal ingredients (EFSA, 2006(EFSA, , 2012 but in the absence of systematic, representative sampling of all raw materials it is not possible to evaluate with confidence the relative frequency of Salmonella contamination in cereals compared with other ingredients.…”