fbpx
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.)
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

Vaccinating broilers against Salmonella can help reduce pathogen’s prevalence at processing

Vaccination of broilers against Salmonella can help poultry producers reduce the pathogen’s prevalence at processing and may also benefit bird performance, Kalen Cookson, DVM, director of clinical research, Zoetis, told Poultry Health Today.

Producers are under increased pressure to contain the prevalence of Salmonella at processing due to more stringent standards established by USDA’s Food Safety and Inspection Service (FSIS). “It’s put a lot more pressure than [producers] have been accustomed to,” Cookson said.

A successful Salmonella vaccination program has to start with breeders since “your broiler chick inherits sins from the breeder,” he said. That’s why most breeder flocks today receive a live Salmonella vaccine and many producers follow up with a killed vaccine.

The positive impact of vaccinating breeders against Salmonella, however, takes from six to 12 months. “In the meantime, if you need to make immediate changes, then you pretty much by default have to make those changes on the broiler side,” he said.

30% to 60% reduction

Experience with live Salmonella vaccines used in broilers indicates they can do a good job reducing levels of the pathogen at the processing plant. In fact, in field trials conducted by Zoetis over the past 18 months, vaccination of broilers yielded a 30% to 60% reduction in Salmonella at the plant based on sampling at rehang, Cookson reported.

Asked if Salmonella vaccination can positively affect broiler performance, the veterinarian indicated that it can. Both pen studies and field trials involving birds that were vaccinated then naturally exposed to wild type Salmonellae showed improved performance. In field trials, the adjusted feed conversion improved by one or two points (0.02).

It should be no surprise, Cookson continued, that young birds challenged with a pathogenic gut bacterium like Salmonella would have compromised body weight or that performance improves if vaccination takes the edge off an early challenge and minimizes Salmonella colonization.

Cookson cited other strategies — mainly in the area of gut health — that producers can implement during live production to help ensure better Salmonella control. He also mentioned that another key step is reducing or managing litter moisture. That in turn can help lower with the incidence of foot pad dermatitis — which is a route for Salmonella exposure — as well as decrease fecal contamination of feathers.

 




Posted on May 24, 2018

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.