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.
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Stott et al. (1975) studied this question.
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