fbpx
Sign up now!
Don't show this again
Sweepstakes Rules

We’re glad you’re enjoying Poultry Health Today.
Access is free but you’ll need to register to view more content.
Already registered? Sign In
Tap to download the app
X
Share
X
REPORTSCollect articles and features into your own report to read later, print or share with others

Create a New Report

Favorites

Read Later

Create a new report

Report title (required) Brief description (optional)
CREATE
X
NEXT
POULTRY
follow us


You must be logged in to edit your profile.

Sponsored by Zoetis

Sponsored By Zoetis

.
PHT GLweb Persistent Salmonella 114366785

Study exposes Salmonella-contamination risks of integrated broiler production

Integrated broiler producers in Europe pose a risk of transmitting and maintaining clones of Salmonella throughout the production chain, according to researchers in Spain.

In a study, scientists intensively sampled a company slaughterhouse throughout processing and used genotypic characterization techniques to analyze Salmonella isolates. A total of 504 samples were collected from points including feces, environmental surfaces, neck skin and the internal cavities of the birds.

From these samples, 45% were positive for Salmonella. The scientists found very high genetic similarity between strains found on incoming flocks, during the slaughter process and on carcasses, while over 98% of positive samples were S. Enteritidis, with the remaining testing positive for S. Kentucky.

“Considering that the same genotypes could be isolated from different farms, owned by the same integrated company, it strongly suggests a cross-contamination throughout the broiler supply chain,” the scientists said.

Robust strains survive through processing

Notably, when the status of live flocks arriving at the slaughterhouse was negative, each stage of processing through exsanguination, defeathering and air-chilling saw more birds test positive.

“The same strain of S. Enteritidis was able to survive the cleaning and disinfection protocols, leading to cross-contamination among different slaughter stages,” they noted.

Salmonella forming biofilms, particularly in the crate-transportation stage due to the bacteria adhering to wet surfaces, is another “critical” area, they added, as biofilms are much more resistant to disinfectants and mechanical interventions.

The findings add further weight to observations in the broader industry of Salmonella clones linked to specific companies, they said. Such clones have a high resistance to conditions in production and processing, allowing them to continue recirculating.

About 80% of Spanish broiler production is controlled by integrated companies with farms, slaughterhouses, breeders and feed plants, which increases biosecurity risks.

With this in mind, improved biosecurity measures and vaccination protocols could tackle persistent Salmonella strains and reduce infection pressure in the slaughterhouse, the researchers said. Additionally, timely molecular diagnosis in the field could also help establish the source of strains and improve control measures.

The full research report is available in the journal Poultry Science.

Shareicon Pht 1
Share It
Integrated broiler producers in Europe pose a risk of transmitting and maintaining clones of Salmonella throughout the production chain, according to researchers in Spain.

Click an icon to share this information with your industry contacts.



Posted on November 22, 2022

tags: , ,
RELATED NEWS



You must be logged in to edit your profile.

Google Translate is provided on this website as a reference tool. However, Poultry Health Today and its sponsor and affiliates do not guarantee in any way the accuracy of the translated content and are not responsible for any event resulting from the use of the translation provided by Google. By choosing a language other than English from the Google Translate menu, the user agrees to withhold all liability and/or damage that may occur to the user by depending on or using the translation by Google.