Effect of withdrawing feed from hogs prior to slaughter on the prevalence of gastrointestinal lacerations at slaughter

dc.contributor.author Morrow, W. E. Morgan
dc.contributor.author Davies, Peter
dc.contributor.author See, T.
dc.contributor.author Eisemann, J.
dc.contributor.author Zering, K.
dc.date 2018-08-13T19:17:42.000
dc.date.accessioned 2020-07-02T06:18:17Z
dc.date.available 2020-07-02T06:18:17Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 1999
dc.date.issued 1999
dc.description.abstract <p>To help producers decide whether they should withdraw feed prior to slaughter, we designed a study that examined the effect of feed withdrawal on the proportion of gastrointestinal tract lacerations, prevalence of Salmonella spp. in cecal contents at slaughter, prevalence and severity of gastric ulcers, and meat quality as measured by ultimate pH, color, and water holding capacity. Finally, we analyzed the economic impact of the treatments. This report focuses on the prevalence of lacerations of the gastrointestinal tract found at slaughter. We followed to slaughter, in 3 marketing groups, 900 National Pig Development barrows that we had assigned to treatment. Each marketing group (feed withdrawn once, first group; twice, second group; or three times, third group) had an equal number of pigs that had feed withdrawn for 0 (control) 12, or 24 hours. Overall, 15.7% of gastrointestinal tracts were lacerated in one or more sections including the stomach (8.4%), colon (5.7%), small intestine (2.1 %), and ceca (0.9%). The withdrawal of feed before slaughter decreased the weight of the gastrointestinal tract. The proportion of lacerations in this study (15.5%) is higher than previously reported (4.5%). The difference may be due to the higher rate of evisceration (18 pigs per minute), or our more detailed examination of the gastrointestinal tracts.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/safepork/1999/allpapers/87/
dc.identifier.articleid 2003
dc.identifier.contextkey 6217743
dc.identifier.doi https://doi.org/10.31274/safepork-180809-1038
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath safepork/1999/allpapers/87
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/83382
dc.language.iso en
dc.relation.ispartofseries International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork
dc.source.bitstream archive/lib.dr.iastate.edu/safepork/1999/allpapers/87/1999_MorrowWEM_EffectWithdrawingFeed.pdf|||Sat Jan 15 02:15:22 UTC 2022
dc.subject.disciplines Animal Diseases
dc.subject.disciplines Veterinary Infectious Diseases
dc.subject.disciplines Veterinary Microbiology and Immunobiology
dc.subject.disciplines Veterinary Preventive Medicine, Epidemiology, and Public Health
dc.title Effect of withdrawing feed from hogs prior to slaughter on the prevalence of gastrointestinal lacerations at slaughter
dc.type event
dc.type.genre article
dspace.entity.type Publication
relation.isSeriesOfPublication aab46b45-e596-479d-af7f-e072b1599cd7
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