Use of Three Rapid Detection Systems to Evaluate the Prevalence and Dissemination of Salmonella in a Brazilian Poultry Slaughterhouse (original) (raw)

2003, Journal of Rapid Methods and Automation in Microbiology

Prevalence and dissemination of Salmonella in a Brazilian poultry slaughterhouse were evaluated by three rapid detection systems (SS/SVrM, WCM, OSRTm, Unipath/Oxoid, andREVEAL.m, Neogen), plus the conventional procedure. The carcasses were sampled afler bleeding (PI). de$eathering (P2), evisceration (P3), washing (F4}, chilling {F5} and the packaged end-product (P6). In the first set of carcasses, the Salmonella incidence determined by the conventional method was 38.3% and 22.5% by SS/Svu. In the set for evaluation of OSRTm, the number of positive samples was the same detected by the cultural procedure (49.0%). In the third set, the positivity by the conventional procedure was 33.3%, and 5.0% by REVEALTM. The comparisons ofpositives in the first and third sets of carcasses were significantly different (P < 0.05). The positivity for Salmonella, in carcasses at PI to P6, as determined ' Corresponding author. Address: Caixa Postal 572, Dismto de RubiBo Jdnior, 245 246 J.P.A.N. PINTO ETAL. by at least one of the methods, was 47.5%, 47.5%, 32.5% 30.0%, 30.0% and 37.7%, respectively.