The effect of sample size and culture method on the recovery of salmonella spp. from naturally contaminated carcase meal.

The results of parallel examination by two methods of 223 consignment samples of carcase meal were compared. Selective pre-enrichment of 5 g of sample prior to plating on to a solid media disclosed that 2,7% of consignments were contaminated with Salmonella. Non-selective pre-enrichment of 100 g followed by selective enrichment prior to plating food 21,5% of the consignment to contain Salmonella.