Sign up now!
Don't show this again
Download the report!Continue to Site >
or wait 7 secs

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 Pig 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
Pig 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

Pig Health Today | Sponsored by Zoetis

Featured Video Play Icon

Connor: Managing mycoplasma requires integrated approach with vaccines, feed medications, injectables

Mycoplasma pneumonia continues to trouble the swine industry. Around for years, the respiratory disease caused by the bacterium Mycoplasma hyopnueumoniae reduces pig performance, especially when mixed with other diseases such as porcine reproductive and respiratory syndrome and influenza.

“Only recently have we identified the ongoing costs of (mycoplasma),” Joe Connor, DVM, president of Carthage Veterinary Service, told Pig Health Today. “That’s really what has driven our focus on control methods.”

In addition, some hog farms undertake elimination of mycoplasma. About 10% of swine herds have been successful in eliminating mycoplasma. Moving that percentage higher will take work, Connor added.

Prevention and control

A mycoplasma-prevention plan for grower pigs begins with young, growing gilts before entering the sow herd.

“An infected animal can shed (mycoplasma) bacteria for up to 250 days,” Connor said. “If we expose the young gilt to natural infection, she will not be shedding when she farrows her first time. That is a critical part of the control.”

The second part of control is vaccination of pigs or piglets, depending on the activity of the growing population.

The third part is a strategically placed antibiotic during the active phase and the growing phase of the pig. Diagnostic tools help veterinarians determine when to administer an antibiotic intervention, usually a medication in the feed for 21 days.

Where, when to use injectables

Injectable antibiotics are important tools for managing mycoplasma, depending on the prevalence of the disease at weaning and in grow-finish pigs, Connor said.

“If the pig is clinically showing signs of mycoplasma, we would use an (injectable) antibiotic,” he explained. The clinical signs include a dry, long-duration cough; respiratory activity not necessarily related to the cough; and mortality.

“Most of us use a threshold of a certain number of pigs that die over a short period of time as a trigger to go in and be more aggressive with individual treatments,” Connor said.

“We do know that if a caregiver can detect pigs needing treatment, individual pig treatment remains the most cost-effective strategy we have, even for bacterial agents such as mycoplasma,” he added.

Mycoplasma-elimination efforts

A number of herds have eliminated mycoplasma — enough herds to determine the key steps for being successful. However, some of the mycoplasma-negative herds become infected with the route of introduction unknown.

“At the same time as we increase pig density, we’re always looking to eliminate bacterial or viral infections to take them out of the spectrum of combined infections,” Connor added. This will always include mycoplasma.

Recently, studies showed aerosol transmission of mycoplasma is “not as frequent as what we thought in the past,” he said. This provides hope that the number of mycoplasma-free herds will slowly increase in the future.




Posted on September 12, 2018

tags: , ,

You must be logged in to edit your profile.

Share It
US producers and veterinarians have seen an influx of different types of influenza viruses in the last 10 to 15 years, and that is a major reason why influenza is more difficult to control.

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