Decline of Salmonella Enteritidis in poultry

Abstract

Purpose – The aim of this study was to serotype strains of Salmonella isolated from poultry and raw poultry meat from 2006 to 2010 and to correlate the results with data from the Health Department of Parana State. Design/methodology/approach – A total of 1.165 Salmonella spp. strains isolated from commercial broiler breeders and laying hens (cloacal swabs, dragging swabs and faeces) and from one-day-old chicks (liver, spleen and cecum) and 310 strains isolated from raw chicken meat were serotyped between 2006 and 2010. Findings – The results showed a decline in the isolation of S. Enteritidis (SE) of poultry and chicken meat in the studied period. The most prevalent serovar isolated from raw chicken meat was Minnesota (n=73; 23.02%), followed by Mbandaka (n=33; 10.41%) and Enteritidis (n=30; 9.46%). The decrease in frequency of isolation of SE may be related to the broiler breeder hens vaccination and to the National Program for the Reduction of Pathogens of the Brazilian Agriculture Ministry and Food Supply, established in 2003. Originality/value – The results reinforce the importance of improving bio-safety programs for the control and eradication of Salmonella spp. in the poultry industry.

Occurrence of Salmonella sp. in poultry carcasses evaluated from the retail trade between 2007 and 2013 in Paraná state, Brazil

“…Nevertheless, the measures implemented by the National Poultry Health Program (PNSA) and the PRP had some specific serotypes of this pathogen, such as Gallinarum, Pullorum, Enteritidis and Typhimurium. Some studies have shown that after the implementation of these control measures established by these programs the decline of these serotypes occurred (Kottwitz et al, 2013;Voss-Rech et al, 2015;Mion et al, 2016). However, as a reflection of a competitive exclusion, the emergence and reemergence of new serotypes may explain the reason the occurrence of Salmonella sp.…”

“…This serotype was prominent in the country after the Gallinarum and Pullorum serotypes were controlled (Rabsch et al, 2001). However, data compiled by Kottwitz et al (2013) show that, in the following years, there was a decline of S. Enteritidis in biological samples of chicken, which fell from 77% in 2006 to 9% in 2010, demonstrating the control of this serotype.…”