Eighty half carcasses were either: (a) hand-washed with tap water (15 C) or (b) washed (15 C) with an experimental beef carcass cleaning unit. Overall logarithmic mean reduction in aerobic plate counts were 0.99 for hand-washed carcasses and 1.07 for those machine-washed. No significant difference (P ⩽ 0.05) was noted in percentage dirt and smear reductions due to type of wash (hand or machine). However, 12.5% of the hand-washed carcasses and 22.5% of the machine-washed carcasses contained defects caused by hair. The authors concluded that the machine was at least as effective as the careful hand washing in this experiment.

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Author notes

1Contribution from USDA-SEA-AR in cooperation with the University of Missouri Experiment Station, Journal Series No. 8506.

2Mention of a trade name or proprietary product does not constitute a guarantee or warranty of the product by the U.S. Department of Agriculture or the University of Missouri Experiment Station and does not imply its approval to the exclusion of other products that may also be suitable.

3U.S. Department of Agriculture.

4Department of Food Science and Nutrition.