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United States Department of Agriculture

Agricultural Research Service

Title: Mucosal Competitive Exclusion to Reduce Salmonella in Swine

Authors
item Pullen, William - UGA
item Cray, Paula
item Reeves, David - UGA
item Bailey, Joseph
item Stern, Norman
item COX, NELSON
item Ladely, Scott

Submitted to: American Association of Swine Practitioners Proceedings
Publication Type: Proceedings
Publication Acceptance Date: January 4, 1999
Publication Date: February 28, 1999
Citation: Pullen, W., Cray, P.J., Reeves, D., Bailey, J.S., Stern, N.J., Cox Jr, N.A., Ladely, S.R. 1999. Mucosal competitive exclusion to reduce salmonella in swine. American Association of Swine Practitioners Proceedings. P. 17-18.

Technical Abstract: Use of a mucosal competitive exclusion culture has been shown to reduce/eliminate Salmonella spp. in poultry. However, little work has been done in other species. We attempted to determine if the use of a competitive exclusion culture derived from swine would be effective in reducing Salmonella in suckling pigs. Two trials were conducted. Clinical signs: No clinical signs of salmonellosis were apparent in all pigs throughout the experiment. Antemortem bacteriologic results: No positive fecal samples for S. choleraesuis were recovered in either trial. Postmortem bacteriologic results: In trial one, 9.5% of the tissues were positive from the MCES treated pigs versus 21% positive tissues from the control pigs. For trial two a similar reduction was observed in that 28% of the tissues were positive from the MCES treated pigs versus 51% from the control pigs. Similar reductions in litters receiving one dose MCES (27% positive tissues) versus two doses MCES (29% positive tissues) were obtained. The tissues that were most likely to yield Salmonella were the lung, liver, and spleen. A slight (<1 log) quantitative difference in total numbers per cecum between treated and control groups was observed.

Last Modified: 7/25/2014