New Oral Fluid Guidelines Offer Cost-Effective Disease Monitoring for Group-Housed Sows

Collect oral fluid samples from group-housed sows by hanging two cotton ropes per pen and allowing 60 to 90 minutes of sampling time to yield best results, suggests a recent study funded by the Swine Health Information Center (SHIC) and led by Jeff Zimmerman at Iowa State University.

As more breeding herds shift to housing sows in groups, the need for validating practical and cost-effective disease surveillance protocols in this population is greater than ever.

Oral fluid sampling has become a popular way to monitor herd health because it’s non-invasive, cost-effective and efficient. It’s also simple and safe for caretakers to collect, according to a recent nationwide survey on oral fluid sampling in U.S. swine farms published in Pathogens.

Zimmerman’s oral fluids sampling study in group-housed sows set out to determine practicality and best practices for the swine industry.

What Did the Sows’ Behavior Reveal?
Researchers conducted the study on a 6,500-head commercial breed-to-wean sow farm. Oral fluids were collected using two ropes per pen for four consecutive days across the pens. Sow behavior towards the ropes was characterized by individually marking a sub-set of animals and a 90-minute video observation was recorded, the study shows.

Results revealed oral fluids can be routinely collected from group-housed gestating sows using cotton ropes, a process used successfully in growing pig populations. In all groups and on all sampling days, the volume of oral fluid collected during the study was more than adequate to conduct diagnostic tests.