Prevalence of exposure to Salmonella spp in finishing swine marketed in Iowa

American Journal of Veterinary Research
Annette M O'ConnorSusan L Brockus

Abstract

To describe the prevalence of antibodies against Salmonella spp in swine marketed in Iowa. Swine marketed by 1,044 low-volume producers and 45 high-volume producers. Samples of diaphragm muscle collected from swine carcasses were tested by an indirect ELISA based on lipopolysaccharides from Salmonella spp, in particular Salmonella serovar Typhimurium. Prevalence of positive results for antibodies against Salmonella spp for carcasses, lots, and swine for each producer was determined. Producer-level seroprevalence was used to classify swine from producers as having negligible, low, moderate, or widespread evidence of previous or historical exposure to Salmonella spp. From low-volume producers, 23,609 of 25,478 (92.7%; 95% confidence interval [CI], 92.4% to 92.9%) samples had negative results, and 1,863 (7.3%; 95% CI, 7.05% to 7.56%) had antibodies against Salmonella spp. Of the 6,299 lots of swine tested, 1,191 (18.9%) contained at least 1 sample with positive results. From high-volume producers, 203 of 2,486 (8.1%; 95% CI, 6.8% to 9.3%) samples had antibodies against Salmonella spp, and 124 of 629 lots had at least 1 sample with positive results for antibodies against Salmonella spp. Less than 10% of pigs marketed in Iowa are ap...Continue Reading

References

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Citations

Mar 2, 2010·Foodborne Pathogens and Disease·Bing WangAnnette M O'Connor
Dec 2, 2010·Foodborne Pathogens and Disease·Peter R Davies
Jun 15, 2018·Translational Animal Science·Baylee C BessireJoy Scaria

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