Ma. Grant et al., MONITORING DAIRY SILAGE FOR 5 BACTERIAL GROUPS WITH POTENTIAL FOR HUMAN PATHOGENESIS, Journal of food protection, 58(8), 1995, pp. 879-883
Two types of silage routinely used at a dairy research facility were m
onitored over a 20-month period for five bacterial groups which have b
een associated with human pathogenesis. Those monitored were Listeria
monocytogenes, Yersinia enterocolitica (motile), motile aeromonads, Ca
mpylobacter sp., and enterohemorrhagic Escherichia coli. Of 46 total s
ilage samples, 8.7% were positive for L. monocytogenes, 6.5% for Y. en
terocolitica, and 10.9% for motile aeromonads. Campylobacter spp, and
enterohemorrhagic E. coli were not isolated. The presence of pathogens
was associated with elevated pH in silage samples.