Piglet Trial #5: Evaluation of Probiotics for Diarrhea Prevention

The study involved 36 piglets, which were randomly assigned to one of six treatment groups: Weaned Control (WC), Weaned Medipharm (WM), Weaned Lab Isolate (WL), Weaned E. coli Challenge (WE), Weaned Medipharm E. coli Challenge (WME), and Weaned Lab Isolate E. coli Challenge (WLE). The piglets in the WM and WME groups received an oral challenge of 1 gm of SF Plus, a probiotic strain, dispersed in 5 ml of milk replacer. In contrast, the piglets in the WL and WLE groups received an oral challenge of 1 gm of Strain 2CA. The piglets in the WE and WME groups received an oral challenge of an enterotoxigenic strain of Escherichia coli (0149:K88:K91:nrm) in 5 ml of irvpticase soy broth. The piglets were examined for clinical symptoms of diarrhea at various time points, including July 1, July 16, and July 18. On July 17, selected piglets were transported to the laboratory and sacrificed by electrocution. The stomachs, small intestines, and ceca were excised, and contents were obtained for microbiological analysis. The results of the study indicated that the piglets in the WM and WME groups had lower incidence of clinical symptoms of diarrhea compared to the piglets in the WL and WLE groups. The piglets in the WE and WME groups also had lower incidence of clinical symptoms of diarrhea compared to the piglets in the WE and WLE groups. The study also found that the piglets in the WM and WME groups had higher levels of Lactobacillus and Streptococcus in their intestinal tracts compared to the piglets in the WL and WLE groups. The piglets in the WE and WME groups had higher levels of E. coli in their intestinal tracts compared to the piglets in the WE and WLE groups. The study suggests that the probiotic strain SF Plus may have some protective effects against clinical symptoms of diarrhea in piglets. However, the study also highlights the challenges of recovering and identifying the E. coli strain used in the study, which may have contributed to the variability in the results. The study's findings have implications for the use of probiotics in preventing clinical symptoms of diarrhea in piglets. Further research is needed to confirm the efficacy of SF Plus and other probiotic strains in preventing clinical symptoms of diarrhea in piglets.