Prevalence of Salmonella and Campylobacter on Broiler Chickens from Farm to Slaughter and Efficiency of Methods To Remove Visible Fecal Contamination

Abstract

A study was conducted to investigate the prevalence of Salmonella and Campylobacter from farm to slaughter. The efficiency of trimming and water spray (490 to 588 kPa pressure) on the removal of visible fecal contamination from broiler carcasses before chilling was also investigated. Drag swabs were used to sample litter from the farm houses. Samples of ceca and carcasses without and with visible fecal contamination before and after trimming or spray washing of fecal contamination were taken during slaughter of the flocks previously visited at the farms. There was a low prevalence of Salmonella on the litter from the farms (5%) and cecum and carcasses (0%). However, Campylobacter jejuni and Campylobacter coli were present in farms' litter (100 and 58.8%, respectively), cecum samples (100 and 70.6%, respectively), and carcasses with (58.8 and 11.6%, respectively) and without (17.6 and 9.8%, respectively) visible fecal contamination. There was high prevalence of C. jejuni but at low counts and low prevalence and high counts of C. coli. Campylobacter lari was not detected in any sample. Trimming the visible fecal contamination decreased the prevalence of C. jejuni but increased occurrence of C. coli. Trimming did not reduce the counts of Campylobacter and of hygiene indicator microorganisms on the carcasses. Water shower reduced the counts of hygiene indicator microorganisms by 20%. Therefore, control measures for preventing introduction of Campylobacter and the use of good hygienic conditions are needed to warrant the microbiological quality and safety of broiler carcasses.

Prevalência e susceptibilidade antimicrobiana de sorotipos de Salmonella spp. isolados de frangos vivos e carcaças no estado do Rio de Janeiro

“…Entretanto, pesquisas que utilizaram suabes de arrasto para isolar Salmonella spp. em outras granjas obtiveram resultados positivos, com a prevalência variando entre 1,95% e 11,4% (Boni et al 2011, Giombelli & Gloria 2014, Voss-Rech et al 2015, Pandini et al 2015. O método de coleta com auxílio de suabes de cloaca pode ter influenciado na baixa positividade observada nas amostras de frangos vivos desse estudo e naqueles com resultados semelhantes.…”

“…A ocorrência de Salmonella spp. também é descrita na granja, com variações entre 1,95% e 11,4% (Boni et al 2011, Ravagnani et al 2012, Giombelli & Gloria 2014, Voss-Rech et al 2015, Pandini et al 2015. Em relação aos frangos vivos, a frequência relatada é muito baixa, cerca de 0,2% (Ravagnani et al 2012, Mezalira et al 2014, Bezerra et al 2016.…”

Prevalence and Diversity of Salmonella Serotypes in Ecuadorian Broilers at Slaughter Age

“…This result is similar to the prevalence reported in Venezuela (23%; n = 332) [ 32 ]. In contrast prevalence in Brazil was only of 5% (n = 40) [ 33 ] and in Colombia 65% (n = 315) [ 34 ]. On the other hand, for the European Union member states and 3 European non-member states an overall Salmonella prevalence of 3.37% at farm level was reported with rates varying from 0.08% in Norway to 13.48% in Hungary in 2014 [ 35 ].…”

Salmonella Enteritidis predominance determined by serotyping andreal-time PCR in poultry-derived food and avian isolates

“…Apart from the high detection rate of SE in chicken feces and cloacal swab isolates, some isolates were found to be in serogroups B and C1, whereas only 2 isolates (crow and chick intestine) were NS with the available antisera (Table). In previous studies, which used similar avian sample types such as cloacal swabs, feces, and intestine, detection of SE was previously indicated by Kinde et al (28), while a higher prevalence of other serogroups such as B (29) and C1 (26) was also reported. As another serotyping finding in our study, all chicken drag swab isolates were SE, which, although contrasted to the relatively lower SE incidences of Kinde et al (28) and Kahya et al (11), is in agreement with other previous reports that suggested the drag swab as an effective sample type in SE detection from environmental samples of layer flocks (28,29).…”