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Leman Swine Conference – New S. suis research shows pathogen reduction in sows and her piglets

Samantha Hernandez, product development scientist with Arm & Hammer Animal and Food Production, recently spoke to The Pig Site’s Sarah Mikesell at the Leman Swine Conference in St. Paul, Minnesota, USA.

“We did a commercial study last year and looked at Streptococcus suis (S. suis) levels within sow herds and also within her piglets,” said Hernandez.

The purpose of the study was to determine the level of S. suis in sow herds before and after the implementation of Certillus, a S. suis targeted microbial solution, to evaluate its efficacy against S. suis populations. The study was conducted on three farms:

  • Farm A: high performing farm that didn't have S. suis levels
  • Farm B: was considered “intermediate,” meaning it had S. suis levels, but it also had high performing piglets
  • Farm C: farm struggling with S. suis problems

The first two farms were kept on a basal diet to monitor pathogens. Certillus was implemented on Farm C which was struggling with S. suis.

“Then we went back and sampled again to see how those levels would decrease after being on product,” she explained. “What we found was that the pathogen load did decrease after being implemented with our Certillus product.”

Value to producers
“This could really help the sow - cleaning her up - and then clean up her piglets as well,” she said. “We only implemented the Certillus into the sow diet, but we actually saw decreases in S. suis levels within the nursery as well.”

The study also considered if Certillus could stop the transfer of pathogens from sow to piglet.

“One of the things that we found was that we can [stop the sow-piglet transfer of pathogens], and we can reduce that pathogenicity going into the nursery as well,” said Hernandez. “When we looked at the microbiota of the sows themselves, we saw shifts in the microbiota, not only rectally where the product goes through the system, but we also saw a shift in the microbiota of the vagina as well.”

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In this episode of The Swine Health Blackbelt Podcast, Dr. Talita Resende, Assistant Professor and Food Animal Diagnostician at the University of Minnesota Veterinary Diagnostic Laboratory, explains how sapovirus affects suckling and weaned pigs with diarrhea. She discusses PCR interpretation, rotavirus and E. coli coinfections, intestinal sampling, and in situ hybridization for clearer diagnostic decisions. Listen now on all major platforms!

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"PCR by itself may not identify the main culprit in enteric coinfections, so combined diagnostic methods can clarify farm-level disease investigations."

Meet the guest: Dr. Talita Resende / talita-resende-01188234 is an Assistant Professor and Food Animal Diagnostician at the University of Minnesota Veterinary Diagnostic Laboratory. Her work focuses on swine diseases, veterinary diagnostics, pathology, teaching, research, and service, with previous roles at The Ohio State University and universities in Brazil. Learn more from Dr. Talita Resende on The Swine Health Blackbelt Podcast, available on all major platforms.