

Animal feeds can serve as a carrier for a range of microbial contaminants
such as moulds, mycotoxins and bacteria. Of particular concern for the safety
and health of both animals and consumers are Salmonella spp.
This is now very topical in Europe with the phased introduction of the
Control of salmonella and Other Specified Food Borne Zoonotic Agents Regulation
(2160/2003).
2008 saw the phased entry of layers into the control programme following
poultry breeders in 2007. Broilers will follow in 2009, followed by turkeys and
slaughter pigs in 2010.
This will affect third country imports, who must adhere to the same
standards. Food and feed producers are also required to implement HACCP (Hazard
Analysis and Critical Control Points) plans.
The importance of controlling moulds and mycotoxins in feed is widely known
and practised. The control of bacteria is less well understood and the
connection between salmonella found in animal feed and it’s importance in being
linked with potential human food product contamination unclear.
Recent publication by Bucher et al, "Occurrence and Charcterization of
Salmonella from Chicken Nuggets, Strips and Pelletized Broiler Feed" suggests a
strong connection.
This paper will examine bacterial contamination of feed ingredients, as well
as the potential for contamination and recontamination of feed during processing
and delivery to the animal. Measures to control bacteria in the feed, their
technological and economic advantages and importance for animal performance and
food safety will also be reviewed.