Disease concerns take center stage at World Pork Expo

FFMC - Mon Jun 9, 2:00AM CDT

While the futures markets of late allow pig farmers the opportunity to price some profits, the caveat remains that producers need to keep their herd healthy to get hogs to market.

Although many issues of the day were open for discussion during the annual World Pork Expo in early June in Des Moines, Iowa, a lot centered on disease concerns — new and old.

Porcine reproductive and respiratory syndrome continues to plague the U.S. pig farmer, costing the industry more than $1 billion in lost production each year.

Producers used to be able to set their calendar by PRRS, as it would traditionally emerge in herds around Oct. 15, but now it appears that the viral disease knows no season. Reports of PRRS uncharacteristically increased in April and May of this year. Typically, PRRS cases start to decline this time of year.

Disconcerting for producers is that PRRS continues to present new variants, and this latest scourge is the 1-4-4 L1C.5 variant.

Leaders on the swine herd health front, with assistance from producers and their herd veterinarians, can play a big role in preparing the industry for PRRS. The Swine Health Information Center (SHIC) disseminates information on all health issues facing pigs, including where PRRS is breaking. Is it in your region? In your state? Is it in wean-to-finish vs. sow farms? Knowing how and where PRRS exists can help producers create an action plan.

An old “friend” also has reared its ugly head again, as producers report recent spikes in porcine epidemic diarrhea virus, with producers saying, “This feels more like 2014 than any year we’ve had since then.” That refers to when PEDV came onto the scene in late 2013 and prolonged through 2014.

Strengthened biosecurity measures implemented throughout the industry at that time appeared to curb PEDV cases, even though the virus is endemic in the country. Although a risk for biosecurity fatigue exists, research and anecdotal experience prove that amped-up biosecurity measures are helpful in the fight against any disease.

New threat emerging

SHIC was created in the wake of PEDV to tackle current swine health issues while also keeping the industry aware of what’s on the radar. On that SHIC radar is the new-world screwworm, which was detected in Mexico in November, even though that country had been negative for many years. In May, it was detected in Veracruz, which is within 700 miles of the U.S. southern border. This prompted USDA to suspend imports of live cattle, horses and bison through U.S. ports of entry along the border.

Why is NWS a concern for U.S. pig farmers? NWS is a parasitic fly that lays eggs and larvae in mucous membranes and open wounds. Most concerning of a potential NWS invasion into the U.S. is that it affects any warm-blooded animal, including livestock, wildlife and even humans.

Staying on top of diseases that threaten or potentially may threaten the U.S. swine industry, SHIC and the American Association of Swine Veterinarians are hosting a June 13 webinar on the "Emerging Risk of New World Screwworm and Efforts to Prevent Reintroduction into the U.S." This webinar will be from 10-11:30 a.m. CDT. A panel of experts will provide the latest information on NWS, including an overview of the parasite, the fly life cycle, clinical signs of infestation, the status of NWS in Mexico and efforts to mitigate spread into the U.S.

Research also continues to investigate the potential of the H5N1 virus, which causes highly pathogenic avian influenza, making the leap from fowl to pigs.

As with PRRS, PEDV and any other viral or bacterial infections that may impact swine herds, the good working relationship between producer and veterinarian cannot be stressed enough. Knowing the animals in your herd and observing them is imperative to ensuring healthy hogs make it to market, allowing producers to take advantage of pricing opportunities.