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


Collect articles and features into your own report to read later, print or share with others

Create a New Report


Read Later

Create a new report

Report title (required) Brief description (optional)
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

Is MS the next ‘big, bad Mycoplasma’ for US poultry?

The US poultry industry is reporting more problems with virulent Mycoplasma synoviae (MS), Naola Ferguson, DVM, associate professor at the University of Georgia, told Poultry Health Today.

MS causes upper-respiratory disease, leg problems, liver problems, pneumonia and eggshell-quality issues. It can spread faster, is more persistent and is more difficult to manage than Mycoplasma gallisepticum (MG), which has been considered the “big, bad Mycoplasma” of poultry, she said.

In adult breeders, MS problems typically start at the peak of egg laying. Broilers are infected vertically, with clinical signs in the flock appearing at about 3 weeks of age, Ferguson said.

Problems with MS are more likely to occur on multiple-age broiler farms. The severity of the disease tends to be worse when it’s cold because of the synergistic effect with respiratory viruses and poor air quality, which can lead to severe airsacculitis and clinical signs, Ferguson said.

The key to keeping ahead of MS is to make use of the sensitive diagnostic tests available — ELISA and PCR (polymerase chain reaction testing). Sometimes companies try to save money by forgoing diagnostics, but without diagnostic information from earlier stages of the flock, it’s difficult to tell when the birds got infected and how to prevent the problem from happening in the future, she said.

For MG control, vaccines and antibiotics are the only options available. Breeders are vaccinated to prevent vertical transmission from hens to broilers. But vaccines aren’t available for MS in the US, so antibiotics are the only option, Ferguson continued.

Antibiotic water treatment controls MS immediately. Producers can give a high dose in a short period of time to try and knock down the levels as soon as MS is diagnosed.

In-feed antibiotics are for long-term MS prevention, for trying to keep the infection level down over time and to help prevent both vertical and horizontal transmission, she explained.

Posted on June 20, 2018


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.