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dc.contributor.authorTallet, C
dc.contributor.authorSénèque, E
dc.contributor.authorMégnin, C
dc.contributor.authorMorisset, S
dc.contributor.authorVal-Laillet, D
dc.contributor.authorMeunier-Salaün, M-C
dc.contributor.authorESTEBAN , ARRIBAS REYES
dc.contributor.authorHausberger, M
dc.date.accessioned2017-12-12T18:08:39Z
dc.date.available2017-12-12T18:08:39Z
dc.date.issued2016-01
dc.identifier.issn0168-1591
dc.identifier.issn1872-9045
dc.identifier.urihttp://hdl.handle.net/10026.1/10417
dc.description.abstract

Rearing social animals like pigs in isolation from conspecifics can have consequences on behaviour and physiology. The aim of this experiment was to determine whether rearing conditions affect body posture. We adapted a method for quantitative evaluation of posture based on geometric morphometrics, developed in horses, for pigs and applied it in different conditions. Forty-eight 75-day-old females were reared either alone in 2.25 m2 pens (IH, N = 24 animals and 4 groups) or in groups of four in 4.64 m2 pens (GH, N = 24) for two weeks. They were habituated to human handling (stroking, speaking) and marking on their backs every day, and tested individually once a day for 10 min in a corridor outside the home pen during the two subsequent weeks. We observed their behaviour and posture during the first exposure to the test (novelty), and the fourth and fifth (after habituation). On the sixth and seventh tests, a familiar stockperson was present in the corridor (human presence). Before each test, the animals were marked with seven landmarks along their length, corresponding to their anatomical points and were easily located. An experimenter took pictures of the animals walking along the corridor, and these pictures were transferred to Tps software for analysis. GH animals were more often active in the rearing pen than IH (median (IQ) 15% of observations [12–20%] versus 2% [0–13%]; P < 0.05). All animals except one IH initiated contact with the handler during the last sessions of handling (Fisher's exact test, ns). Principal Component Analyses revealed significant effects of rearing and testing conditions on pigs’ behaviour and posture. Novelty led to fewer vocalisations and more exploration for IH than GH animals (P < 0.05), but there were no differences between treatments after habituation to the testing situation. The backs of IH animals were more rounded than those of GH (P < 0.05; dimension 1 of PCA), independently of the test condition. Human presence had no effect on posture. In conclusion, the method based on geometric morphometrics that we developed to study pig posture detected variations in walking posture in pigs associated with rearing conditions. Postures might reflect affective states in pigs, as shown in other species, but further studies are needed to verify this.

dc.format.extent32-41
dc.languageen
dc.language.isoen
dc.publisherElsevier BV
dc.subjectMethodology
dc.subjectPig
dc.subjectPosture analysis
dc.subjectRearing condition
dc.subjectWelfare
dc.titleAssessing walking posture with geometric morphometrics: Effects of rearing environment in pigs
dc.typejournal-article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000369680900005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.volume174
plymouth.publication-statusPublished
plymouth.journalApplied Animal Behaviour Science
dc.identifier.doi10.1016/j.applanim.2015.10.008
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA04 Psychology, Psychiatry and Neuroscience
dcterms.dateAccepted2015-10-18
dc.identifier.eissn1872-9045
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1016/j.applanim.2015.10.008
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review


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