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.)

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

Wet bulb reservoirs can be source of bacterial contamination for hatching eggs

Wet bulb reservoirs in hatchery incubators should be included in the bacterial-monitoring program to ensure they aren’t the source of egg-shell contamination, Jean Sander, DVM, senior technical services veterinarian, Zoetis, told Poultry Health Today.

Her advice is based on recent experience with a US poultry company that wanted to figure out why bacterial counts on the surface of hatching eggs was high and, in some cases, actually increased during incubation when it should have declined.

Testing pre-set in both the egg-storage room and pre-transfer within the setter revealed that wet bulb reservoirs — which generally aren’t included in bacterial-monitoring programs — were “teeming with bacteria” that matched the bacteria on the surface of eggs. There was also a hose used to wash floors that carried the same bacteria, Sander said.

Only eggs without gross contamination were tested. The types of bacteria found were primarily enteric in nature such as Enterococcus, Escherichia coli and Bacillus. In some cases, the bacterial counts were so high they were too numerous to count, Sander said.

“A good wet bulb reservoir-sanitation program should be implemented,” and when hoses are used to clean floors where eggs are incubating, care needs to be taken to make sure eggs in racks aren’t contaminated, she said.

Other preventive steps

The quality of the chick coming out of the hatchery is critical to the productivity of broilers — and to food safety, Sander emphasized in the interview with Poultry Health Today, and suggested other steps to prevent bacterial contamination of eggs and chicks.

Hens should be trained to lay eggs in nest boxes; one way to do this is by avoiding dark areas that might attract hens so they’re more likely to go to nest boxes, she said.

If any eggs are laid on the floor, where the risk of bacterial contamination is greater, “It’s best not to use them if you can,” she said.

Vaccinating breeders against Salmonella is another way to prevent bacterial infections at hatcheries. And at the hatchery, make sure the eggs set are clean and that the overall hatchery-sanitation program is thorough, Sander said.

She called it a “big mistake” to discontinue in ovo vaccination against Marek’s disease as a way to reduce bacterial infections in the hatchery in the absence of antibiotic usage.

“That’s…avoiding a very essential and well-documented preventive-medicine program,” she said.  A better option would be to “make sure hatchery sanitation is adequate.”

 

 

 

 




Posted on September 10, 2019

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.