Incidence of Salmonellae in Animal Feed and the Effect of Pelleting on Content of Enterobacteriaceae



During a survey of meat and bone meals, fish meals and poultry feeds salmonellae were found only in samples of meat and bone meal, for which 19% were Salmonella-positive. MPN estimations on 2 meat and bone meal samples gave figures of 6 and 39 salmonellae/ 100 g, respectively. Sampling of poultry feed before and after pelleting showed that this process gave up to 1000-fold reduction in numbers of Enterobacteriaceae depending on the type of processing involved.