In poultry production, there are eight areas that require attention in order to reduce bad bacterial contamination on-farm and aid in the prevention of foodborne Salmonella.
Residual contamination from previous flocks is a common reason for Salmonella-positive birds. Cleaning growing houses between flocks can significantly reduce the prevalence of Salmonella in live production. Effective biosecurity and pest control are also key to avoiding contamination.
Contaminated grains and feed ingredients can increase the risk of Salmonella in the final feed. Use heat-pelleted feed and source feed from mills operating with stringent quality standards.
Water management is a crucial part of any Salmonella control programme in poultry, since water can serve as a medium for the organism to spread from bird to bird. Chlorinated water and the use of organic acids in the water have been shown to reduce Salmonella levels in the flock.
Dust can also be a medium for Salmonella to spread. A system that keeps dust levels below 3 milligrams per cubic meter is an important prevention tool.
Poultry litter with high moisture and pH levels allows Salmonella to thrive. Managing the moisture and pH of the litter has been shown to be an effective way to control Salmonella in live poultry production.
Establishing and maintaining proper gut flora soon after hatching is very important to prevent Salmonella from colonising birds. Programmes that include the use of probiotics, organic acids, enzymes and yeast technologies have been shown to be effective at maintaining optimal gut health.
Intestinal challenges caused by poor gastrointestinal integrity can have a big impact on Salmonella levels in broilers. Strong cocci management needs to be part of every Salmonella control programme.
The use of vaccines, especially at the breeder level, has the potential to reduce the prevalence of Salmonella among day-old chicks.
Kayla Price, poultry technical manager for Alltech Canada