Sign up now!
Don't show this again

Thank you for confirming your subscription!

(And remember, if ever you want to change your email preferences or unsubscribe, just click on the links at the bottom of any email.)

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

REPORTS

Collect 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 PORK
follow us


You must be logged in to edit your profile.

Favorites Read Later My Reports PHT Special Reports
Poultry Health Today is equipped with some amazing (and free) tools for organizing and sharing content, as well as creating your own magazines and special reports. To access them, please register today.
Sponsored by Zoetis

Sponsored By Zoetis

.
Featured Video Play Icon

Better management, biosecurity could mean lower Salmonella levels in NAE farms

New research has suggested that Salmonella levels in no-antibiotics-ever (NAE) poultry systems could be lower than those on conventional broiler farms.

Estefania Novoa Rama, a graduate research assistant at the University of Georgia, told Poultry Health Today that the difference could be due to better biosecurity and a sharper focus on management on NAE units.

In her study, Novoa Rama looked at four different farms — two with NAE systems and two that followed conventional practices.

On each farm, samples were taken from hatch to transport and at the processing plant, with testing done just after feed changes.

“We wanted to get a clean slate,” Novoa Rama said. “Every time there’s a feed change, we sampled right after. So we get kind of a representation of what’s happening in the microbiota with that feed change.”

A total of 15 birds were sampled at random each time, with contents taken from the cecum and ileum. Feed, water and litter were also sampled, with 229 samples taken from each farm in total.

The study used the same Salmonella sampling method as the Food Safety and Inspection Service uses in processing plants so that the results could be directly compared with that existing dataset.

Lower prevalence

Overall, the birds reared in conventional systems had a higher prevalence of Salmonella compared with the NAE-reared flocks.

The difference was most pronounced when birds were very young, but there was also a peak as they approached slaughter weight and when feed withdrawals and transport come into play, Novoa Rama said.

“[We expected this] because of the stress associated with those practices and also because of the increased shedding of pathogens that can create more opportunities for cross-contamination between flocks,” she said.

Rates were higher still in the slaughterhouse, she added. “Again, there’s a lot of potential for cross-contamination, and if the birds are shedding during transport and they’re in very confined places, it just creates a better environment for Salmonella to spread between birds.”

No Salmonella was found in feed and water samples.

Higher biosecurity reliance

Novoa Rama said the difference could be caused by NAE systems’ higher reliance on biosecurity to maintain bird health.

While it’s unlikely to be the only factor, not having antibiotics available as an intervention can focus farmers’ attention on management, she added.

“Usually, the NAE farms are just pristine. They’re very well managed,” she said.

“I don’t want to generalize; this is not all conventional farmers. But I do believe that to reduce the numbers of pathogen prevalence, a ‘multiple’-hurdles approach is the best way to go.

“So, as much as you were relying on an antibiotic or an anticoccidial, just paying attention to biosecurity and management will contribute to those low numbers.”

 

Share It
Salmonella levels in no-antibiotics-ever systems could be lower than those on conventional broiler farms, researchers at the University of Georgia have discovered.

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



Posted on November 3, 2020

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.