Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1990-11 edition. Excerpt: ...carcasses of similar source and type slaughtered under similar conditions. o Hypothesis 2: Bacterial contamination does (or does not) correlate with carcass error rates, as determined by organoleptic techniques. o Hypothesis 3: Bacterial contamination rates are (or are not) more dependent on line speed than on inspection strategy. To evaluate these hypotheses statistically, it would be desirable to determine the sample sizes required to provide acceptable alpha(a)' and beta(/?)2 risk levels and also to consider possible confounding effects such as type of cattle being slaughtered. A preliminary study, such as one performed by Agriculture Canada (Appendix F), could provide data for sample size determinations. After methods have been established, a continuing program of data collection should be developed and hypotheses retested to provide ongoing assessment of quality control programs and inspection processes. Sudden occurrence of high aerobic bacterial counts (e.g., standard plate counts, coliform counts, or Salmonella counts) in a plant might indicate a breakdown in the control of bacterial contamination that is detectable by quality control procedures and inspection processes. Sudden increases in the incidence of enteric bacterial pathogens might indicate an increase in fecal contamination of carcasses by carrier animals. Similarly, a sudden increase in chemical contamination or residues would indicate the need for traceback to sources of contamination. To accomplish these goals, FSIS should identify the most effective methods and should use rapid diagnostic tests, such as enzyme-linked immunosorbant assays (ELISA) and DNA probes for pathogenic microorganisms, as previously recommended by FNB committees. Programs of this type could...
