Mycoplasma is found in pigs all over the world and whether or not they cause disease is really multi-factorial. To learn more about mycoplasma, treatments and swine management strategies, Boehringer Ingelheim brought in Erin Strait, DVM, the section leader for molecular and viral diagnostics at Iowa State University, to speak during their 2011 Swine Health Seminar. One of Strait’s area of expertise is mycoplasmas and she has been conducting extensive research in the area.

There are many strains of mycoplasma and four pathogenic strains believed to cause the most disease. She noted that a pig can be positive for any one of these and not have problems or you can be positive and have a lot of problems. Strait explained that various things can cause a tipping point, for example co-infections. So if you have a pig with PRRS and mycoplasma, they both will be worse.

Strait said it can be really hard early on to detect mycoplasma especially hyopneumoniaes. Some percentage of pigs are infected from sow to piglet transmission and then those piglets go after weaning and then mix with all the other piglets and then become a source of infection for everybody else. In most cases, if you don’t have a lot of pigs infected early on then it takes longer to circulate through the system and then most likely you don’t see problems quite as severely but if you have a lot of pigs infected early on, then you might have a lot of problems.

I asked Strait what the best way was to test your pigs for mycoplasma. She said serology is the best way to test the hyopneumoniaes but its really going to tell you after the fact.

“So really the only thing you can do is PCR and most people will test for PCR in nasal swabs because that’s an accessible sample to collect but multiple studies have shown its not very sensitive because it doesn’t colonize in the nose, it colonizes lower down in the trachea and lower airways,” said Strait. “So ideally you’d get samples from the large airway. So we discussed the potential of doing a trachea bronchial swab would be very reflective and very reflective of the status of the individual pig.”

There are several ways to treat your pigs once they have a mycoplasma as well as ways to manage your sow to lesson problems that include antibiotics and vaccines. In addition, Strait said she and her team are available to assist if major mycoplasma problems arise in your sow herd.

You can learn more about mycoplasma in my full interview with Erin: Erin Strait: Emerging Mycoplasma Diagnostics

Check out the 2011 BIVI Swine Health Seminar Photo Album.