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dc.contributor.authorMcGrath Nen
dc.contributor.authorDunlop Ren
dc.contributor.authorDwyer CMen
dc.contributor.authorBurman Oen
dc.contributor.authorPhillips CJCen
dc.date.accessioned2017-10-11T13:46:07Z
dc.date.available2017-10-11T13:46:07Z
dc.date.issued2017
dc.identifier.citation130en
dc.identifier.issn0003-3472
dc.identifier.urihttps://doi.org/10.1016/j.anbehav.2017.05.025
dc.identifier.urihttp://hdl.handle.net/11262/11320
dc.description.abstractThe vocalizations of nonhuman animals are considered potential indicators of motivational or internal state. In many species, different call types, and structural variation within call types, encode information about physical characteristics such as age or sex, or about variable traits such as motivation. Domestic chickens, Gallus gallus, have an elaborate vocal repertoire, enabling investigation into whether reward related arousal is encoded within their call type and structure. Twelve hens were given a Pavlovian conditioning paradigm using sound cues to signal the availability of two food rewards (mealworms, normal food), one non food reward (a container of substrate suitable for dust bathing), and a sound neutral event (sound cue, no reward). A muted-neutral treatment (no sound cue, no reward) provided a baseline for vocal behaviour. Sound cues preceded a 15 s anticipation period during which vocalizations were recorded. Hens produced a ‘Food call’ (previously defined in other studies) in anticipation of all rewards, including the non food reward. ‘Food calls’ and ‘Fast clucks’ were more prevalent in anticipation of rewards, and most prevalent following the cue signalling the dust bathing substrate, suggesting that this reward induced the most arousal in hens. The peak frequency of ‘Food calls’ made in anticipation of the dust bathing substrate was significantly lower than those made in anticipation of food rewards, potentially reflecting differences in arousal. Vocalizations that reliably indicate hens' motivational state could be used as measures of welfare in on-farm assessment situations. Our study is the first to reveal variation in the frequency-related parameters of the ‘Food call’ in different contexts, and to show the prevalence of different call types in reward and non reward contexts, which may have implications for welfare assessments. © 2017 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipScottish Government RESAS Strategic Research Programme (RD2.2.7)en
dc.language.isoenen
dc.relation.isformatof14653en
dc.relation.ispartofAnimal Behaviouren
dc.rightsCopyright © 2017 Elsevier Inc. All rights reserved. This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectLaying hensen
dc.subjectMotivationen
dc.subjectReferentialen
dc.subjectRewardsen
dc.subjectVocalizationsen
dc.titleHens vary their vocal repertoire and structure when anticipating different types of rewarden
dc.typeArticleen
dc.description.versionAccepted manuscript
dc.extent.pageNumbers79-96en
rioxxterms.publicationdate2017-07-08
rioxxterms.typeJournal Article/Reviewen
dcterms.dateAccepted2017-04-21
refterms.accessExceptionNAen
refterms.dateDeposit2017-10-11
refterms.dateEmbargoEnd2018-07-08
refterms.dateFreeToDownload2018-07-08
refterms.dateFreeToRead2018-07-08
refterms.dateToSearch2018-07-08
refterms.depositExceptionNAen
refterms.exceptionFreeTextAdministrative erroren
refterms.panelUnspecifieden
refterms.technicalExceptionNAen
refterms.versionAMen


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Copyright © 2017 Elsevier Inc. All rights reserved.
This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license
Except where otherwise noted, this item's license is described as Copyright © 2017 Elsevier Inc. All rights reserved. This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license