Mortality Rate of Weaned and Feeder Pigs as Affected by Ground Transport Conditions

dc.contributor.author Xin, Hongwei
dc.contributor.author Zhao, Yang
dc.contributor.author Xin, Hongwei
dc.contributor.author Harmon, Jay
dc.contributor.author Harmon, Jay
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-17T22:15:07.000
dc.date.accessioned 2020-06-29T22:42:29Z
dc.date.available 2020-06-29T22:42:29Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-01-01
dc.description.abstract <p>Ground transport of pigs at early ages may result in profit-stripping incidences of mortality and compromised animal welfare due to stress stemming from unfavorable transport conditions. The objective of this study was to examine possible causative relationships of mortality rate of weaned and feeder pigs to ground transport conditions. A total of 7056 transportation records of weaned pigs (3174 records) and feeder pigs (3882 records) for the period from April 2012 to January 2014 were provided by a U.S. swine company. Effects of pig type (weaned vs. feeder pigs), ambient temperature (25°C or warm/hot), travel distance (<600 >km, 600 to 900 km, 900 to 1200 km, 1200 to 1500 km, and >1500 km), and the interactive effects on dead-on-arrival (DOA) rate (DOA per head loaded, %) were evaluated. The effects of the same variables on post-transport mortality of weaned pigs were also evaluated. Results show that DOA rate was affected by pig type, ambient temperature, and travel distance interactively. Weaned pig DOA rates (mean ±SE of 0.0333% ±0.0150%) tended to be higher than feeder pig DOA rates (0.0243% ±0.0110%) (p = 0.0004), and weaned pigs were more vulnerable to transport stress in warm/hot conditions. For weaned pigs, DOA rates were higher with >900 km travel distance (0.0543% ±0.0389%) than with(0.0118% ±0.0078%) in cool/cold conditions, and DOA rates significantly increased as travel distance increased in warm/hot conditions. For feeder pigs, DOA rates were not affected by travel distance in cool/cold or mild conditions; however, higher mortality rates were found with >1200 km travel distance (0.2717% ±0.1326%) than with(0.0315% ±0.0151%) in warm/hot conditions. Statistical analysis showed that post-transport mortality rate of weaned pigs was affected by ambient temperature during transport and travel distance interactively for the first one or two weeks after transport. However, it should be noted that the relationship between post-transport mortality and transport conditions could have been confounded by other factors, such as management at the finishing farm. Outcomes of this study are expected to offer insight into improving the ground transport of pigs.</p>
dc.description.comments <p>This article is from Transactions of the ASABE 59(4): 943-948 (doi: <a href="http://dx.doi.org/10.13031/trans.59.11671" target="_blank">10.13031/trans.59.11671</a>). Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/766/
dc.identifier.articleid 2044
dc.identifier.contextkey 9116553
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/766
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1565
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/766/2016_Zhao_MortalityRate.pdf|||Sat Jan 15 01:51:49 UTC 2022
dc.source.uri 10.13031/trans.59.11671
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Animal welfare
dc.subject.keywords Dead on arrival (DOA)
dc.subject.keywords Feeder pig
dc.subject.keywords Pig transportation
dc.subject.keywords Weaned pig
dc.title Mortality Rate of Weaned and Feeder Pigs as Affected by Ground Transport Conditions
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 36e0a8ce-fa2e-4df4-9f67-8d1717122650
relation.isAuthorOfPublication 863ffed7-5274-46d6-95cc-47c7d0d5b6ab
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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