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

Consistency, follow-up key to controlling IBV

Infectious bronchitis virus (IBV) is a “moving target” and trying to keep ahead of it requires consistency and follow-up, Sjaak de Wit, DVM, PhD, of GD Animal Health, the Netherlands, told Poultry Health Today.

While all strains of the virus can cause respiratory signs, many strains also cause kidney or gut problems in broilers as well as drops in egg production in breeders, de Wit explained.

Vaccines are critical for control, but much of the vaccinal virus can be lost when vaccines are not properly administered.

There is no one perfect vaccination solution, de Wit said, but a good place to start is the hatchery.  If producers opt to use two IBV vaccines, hatchery vaccination should be followed with a field boost at 2 weeks of age. Giving a second vaccine earlier or later than 14 days of age will usually not be as effective.

Obtain a baseline

A chicken needs to have a certain amount of vaccine to induce a strong level of protection. Because IBV vaccines are applied by mass application via spray or drinking water — which is fast and easy — it’s impossible to tell if all birds get enough of the vaccine at the time of administration.

Therefore, checking on vaccination results is critical. A polymerase chain reaction (PCR) test should be performed several days after vaccine application to check on vaccine take, he said, and noted that PCR can also determine the different strains of IBV affecting a flock.

De Wit advised producers to first obtain baseline IBV titers with serology at processing so they can see if titers in subsequent flocks are going up or down. This helps determine how well the vaccination program is working.

Although PCR should be done soon after vaccination, it’s most effective when the virus is replicating. PCR also needs to be performed during the acute phase of a problem, when the birds are showing signs of respiratory or kidney problems or when there are drops in egg production, he commented.

De Wit strongly recommended checking for other infections, such as Mycoplasma or avian influenza, along with IBV. If other infectious disease problems are ignored and go unchecked, even the best IBV vaccination program won’t help. Without looking at the flock’s overall health status, producers can overestimate the relevance of IBV.

Even though IBV mutates often, it can be controlled if producers use the industry’s knowledge of the disease, he said.

 

 

 

 




Posted on November 5, 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.