Publication Date

January 2013

Abstract

The objectives of this study were to investigate Salmonella carriage at each stage of pig production (farrow to finish) on 10 commercial pig farms having a historically high Salmonella seroprevalence and to establish the role of feed as a source of Salmonella on the farms. Pig faecal (n=458) and feed (n=321) samples were taken across all pig production stages and analysed for the presence of Salmonella. The pathogen was detected in pigs on nine farms, in 58/458 (12.7%) faecal samples, with a high prevalence among gilts, weaners and finishers. Only 7/321 (2%) of feed samples were Salmonella-positive, with four farms having at least one Salmonella-positive feed sample. The serovar recovered (4, 12:i:-) was also detected in pigs on the same farms, suggesting that it may have originated in the feed supplied to the farm. On the other hand, the feed may have been contaminated on the farm and in this way played a role in transmission of Salmonella.

Book Title

10th International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork

Pages

211-214

Language

en

File Format

application/pdf

DOI

https://doi.org/10.31274/safepork-180809-953

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Jan 1st, 12:00 AM

Assessing the role of feed as a risk factor for Salmonella in pig production

Portland, Maine, USA

The objectives of this study were to investigate Salmonella carriage at each stage of pig production (farrow to finish) on 10 commercial pig farms having a historically high Salmonella seroprevalence and to establish the role of feed as a source of Salmonella on the farms. Pig faecal (n=458) and feed (n=321) samples were taken across all pig production stages and analysed for the presence of Salmonella. The pathogen was detected in pigs on nine farms, in 58/458 (12.7%) faecal samples, with a high prevalence among gilts, weaners and finishers. Only 7/321 (2%) of feed samples were Salmonella-positive, with four farms having at least one Salmonella-positive feed sample. The serovar recovered (4, 12:i:-) was also detected in pigs on the same farms, suggesting that it may have originated in the feed supplied to the farm. On the other hand, the feed may have been contaminated on the farm and in this way played a role in transmission of Salmonella.