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Spores from three strains of Aspergillus parasiticus isolated in 1986 from acid treated grain were inoculated into newly harvested moist barley with the following treatments (I) propionic acid 0.3% by weight, (II) formic acid 0.5% by weight, (III) formic acid 0.5% and ethoxyquin 0.005% by weight, and (IV) no acid. The suboptimal doses of formic acid and propionic acid were used to study the risk for aflatoxin formation in connection with failures of acid preservation of moist grain. The results demonstrated a clear difference between formic acid and propionic acid treatment. Growth of A. parasiticus and aflatoxin production was restricted in propionic acid treated grain. In grain treated with formic acid alone or in combination with ethoxyquin, A. parasiticus totally dominated the fungal flora and produced high levels of aflatoxins. The highest aflatoxin content was found in grain treated with formic acid and ethoxyquin.

This survey describes the frequency of Salmonella in animals and feedstuffs isolated in Sweden 1983–1987. Since 1949 National Veterinary Institute (NVI) has published such reports every fifth year. During the period of this report 760 outbreaks of Salmonella were reported in animals. This includes both domestic and wild animals. The corresponding figure for the previous period was 1266 outbreaks. 56 different serovariants were reported, 17 of these were new to Sweden. In cattle and swine there were a decrease of outbreaks. In poultry 86 outbreaks were reported, compared with 220 outbreaks during the previous five-year periode.