Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/30927
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dc.contributor.authorFountain, Jadeen
dc.contributor.authorHazel, Susan Jen
dc.contributor.authorRyan, Terryen
dc.contributor.authorTaylor, Peta Sen
dc.date.accessioned2021-07-01T05:48:22Z-
dc.date.available2021-07-01T05:48:22Z-
dc.date.issued2020-11-
dc.identifier.citationApplied Animal Behaviour Science, v.232, p. 1-6en
dc.identifier.issn1872-9045en
dc.identifier.issn0168-1591en
dc.identifier.urihttps://hdl.handle.net/1959.11/30927-
dc.description.abstract<p>There is limited research into mesolimbic function specific to birds and, specifically, how neurobiological reward mechanisms affect learning in domestic laying hens (Gallus gallus domesticus). A more thorough understanding of these mechanisms has implications for the improvement of welfare. Reward is proposed to involve two separate processes of 'wanting' regulated by dopamine and 'liking' regulated by opioids. This study examined the effect the opioid antagonist, nalmefene, on learning in domesticated hens.</p><p> Eighteen Isa Brown hens were randomly assigned into either a saline or nalmefene treatment group. Hens in the saline group (<i>N</i> = 9) received 0.9 % saline (0.5 mL/kg pectoral muscle injection). Hens in the nalmefene treatment group (<i>N</i> = 9) were administered an opioid antagonist (0.4 mg/kg nalmefene in 0.9 % saline pectoral muscle injection) to disrupt the reward pathway. Prior to administration of treatments, hens were habituated to the training table, cup and trainer. Training occurred over three consecutive days on a series of three tasks using operant conditioning. Hens were dosed with either saline or nalmefene thirty minutes prior training. Hens were trained for one five minute session each day. Learning tasks included (1) pecking a target, (2) colour stimulus discrimination, and (3) pecking a target on cue presentation. All tasks were trained by the same trainer who was blind to treatment, using clicker training to shape responses. By the final day of training (Day 3), more saline hens had completed Task 1 and Task 2 than hens that received nalmefene (<i>P</i> < 0.0001). No hens in the nalmefene treatment group completed any training task. This study demonstrates that hens treated with an opioid antagonist failed to learn any tasks during operant training sessions, using a food reinforcer, over three days. We show that hens did not learn when the ability to experience reward is blocked, providing evidence that performing operant tasks is rewarding to hens.</p>en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofApplied Animal Behaviour Scienceen
dc.titleOperant learning is disrupted when opioid reward pathways are blocked in the domesticated henen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.applanim.2020.105105en
local.contributor.firstnameJadeen
local.contributor.firstnameSusan Jen
local.contributor.firstnameTerryen
local.contributor.firstnamePeta Sen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailjfounta4@une.edu.auen
local.profile.emailptaylo37@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.publisher.placeNetherlandsen
local.identifier.runningnumber105105en
local.format.startpage1en
local.format.endpage6en
local.identifier.scopusid85091633147en
local.peerreviewedYesen
local.identifier.volume232en
local.contributor.lastnameFountainen
local.contributor.lastnameHazelen
local.contributor.lastnameRyanen
local.contributor.lastnameTayloren
dc.identifier.staffune-id:jfounta4en
dc.identifier.staffune-id:ptaylo37en
local.profile.orcid0000-0003-3681-5968en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:1959.11/30927en
local.date.onlineversion2020-09-22-
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleOperant learning is disrupted when opioid reward pathways are blocked in the domesticated henen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorFountain, Jadeen
local.search.authorHazel, Susan Jen
local.search.authorRyan, Terryen
local.search.authorTaylor, Peta Sen
local.uneassociationYesen
local.atsiresearchNoen
local.sensitive.culturalNoen
local.identifier.wosid000602795000024en
local.year.available2020en
local.year.published2020en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/42c96a73-e1b6-4169-8a3b-6699b220965den
local.subject.for2020310906 Animal neurobiologyen
local.subject.seo2020109902 Animal welfareen
Appears in Collections:Journal Article
School of Environmental and Rural Science
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