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Pichová K, Kubíková Ľ, Košťál Ľ. The Acute Pharmacological Manipulation of Dopamine Receptors Modulates Judgment Bias in Japanese Quail. Front Physiol 2022; 13:883021. [PMID: 35634149 PMCID: PMC9130459 DOI: 10.3389/fphys.2022.883021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/25/2022] [Indexed: 11/25/2022] Open
Abstract
We have studied the effects of dopamine antagonists and agonists on Japanese quail behavior in the spatial judgment task. Twenty-four Japanese quail hens were trained in the spatial discrimination task to approach the feeder placed in the rewarded location (Go response, feeder containing mealworms) and to not approach the punished location (No-Go response, empty feeder plus aversive sound). In a subsequent spatial judgment task, the proportion of Go responses as well as approach latencies to rewarded, punished, and three ambiguous locations (near-positive, middle, near-negative, all neither rewarded nor punished) were assessed in 20 quail hens that successfully mastered the discrimination task. In Experiment 1, each bird received five treatments (0.1 and 1.0 mg/kg of dopamine D1 receptor antagonist SCH 23390, 0.05 and 0.5 mg/kg of dopamine D2 receptor antagonist haloperidol, and saline control) in a different order, according to a Latin square design. All drugs were administered intramuscularly 15 min before the spatial judgment test, with 2 days break between the treatments. Both antagonists caused a significant dose-dependent increase in the approach latencies as well as a decrease in the proportion of Go responses. In Experiment 2, with the design analogous to Experiment 1, the hens received again five treatments (1.0 and 10.0 mg/kg of dopamine D1 receptor agonist SKF 38393, 1.0 and 10.0 mg/kg of dopamine D2 receptor agonist bromocriptine, and saline control), applied intramuscularly 2 h before the test. The agonists did not have any significant effect on approach latencies and the proportion of Go responses in the spatial judgment task, as compared to the saline control, except for 10.0 mg/kg SKF 38393, which caused a decrease in the proportion of Go responses. The approach latency and the proportion of Go responses were affected by the cue location in both experiments. Our data suggest that the dopamine D1 and D2 receptor blockade leads to a decrease in the reward expectation and the negative judgment of stimuli. The effect of dopamine receptor activation is less clear. The results reveal that dopamine receptor manipulation alters the evaluation of the reward and punishment in the spatial judgment task.
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Kim Y, Kwon S, Rajan R, Mori C, Kojima S. Intrinsic motivation for singing in songbirds is enhanced by temporary singing suppression and regulated by dopamine. Sci Rep 2021; 11:20350. [PMID: 34645903 PMCID: PMC8514548 DOI: 10.1038/s41598-021-99456-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 09/21/2021] [Indexed: 12/21/2022] Open
Abstract
Behaviors driven by intrinsic motivation are critical for development and optimization of physical and brain functions, but their underlying mechanisms are not well studied due to the complexity and autonomy of the behavior. Songbirds, such as zebra finches, offer a unique opportunity to study neural substrates of intrinsic motivation because they spontaneously produce many renditions of songs with highly-quantifiable structure for vocal practice, even in the absence of apparent recipients (“undirected singing”). Neural substrates underlying intrinsic motivation for undirected singing are still poorly understood partly because singing motivation cannot be easily manipulated due to its autonomy. Also, undirected singing itself acts as an internal reward, which could increase singing motivation, leading to difficulty in measuring singing motivation independent of singing-associated reward. Here, we report a simple procedure to easily manipulate and quantify intrinsic motivation for undirected singing independent of singing-associated reward. We demonstrate that intrinsic motivation for undirected singing is dramatically enhanced by temporary suppression of singing behavior and the degree of enhancement depends on the duration of suppression. Moreover, by examining latencies to the first song following singing suppression as a measure of singing motivation independent of singing-associated reward, we demonstrate that intrinsic singing motivation is critically regulated by dopamine through D2 receptors. These results provide a simple experimental tool to manipulate and measure the intrinsic motivation for undirected singing and illustrate the importance of zebra finches as a model system to study the neural basis of intrinsically-motivated behaviors.
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Affiliation(s)
- Yunbok Kim
- Sensory and Motor Systems Research Group, Korea Brain Research Institute, 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Sojeong Kwon
- Sensory and Motor Systems Research Group, Korea Brain Research Institute, 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Raghav Rajan
- Division of Biology, Indian Institute of Science Education and Research Pune, Pune, Maharashtra, India
| | - Chihiro Mori
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences, Teikyo University, Tokyo, Japan
| | - Satoshi Kojima
- Sensory and Motor Systems Research Group, Korea Brain Research Institute, 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea.
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Taylor PS, Hamlin AS, Crowley TM. Anticipatory Behavior for a Mealworm Reward in Laying Hens Is Reduced by Opioid Receptor Antagonism but Not Standard Feed Intake. Front Behav Neurosci 2020; 13:290. [PMID: 31992974 PMCID: PMC6971107 DOI: 10.3389/fnbeh.2019.00290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/20/2019] [Indexed: 11/17/2022] Open
Abstract
It is widely accepted that the absence of suffering no longer defines animal welfare and that positive affective experiences are imperative. For example, laying hens may be housed in environments that do not cause chronic stress but may lack particular resources that promote positive affective experiences, such as conspecifics or effective enrichment. Despite a consensus of how important positive affect is for animal welfare, they are difficult to identify objectively. There is a need for valid and reliable indicators of positive affect. Pharmacological interventions can be an effective method to provide insight into affective states and can assist with the investigation of novel indicators such as associated biomarkers. We aimed to validate a pharmacological intervention that blocks the subjective hedonistic phase associated with reward in laying hens via the administration of the non-selective (μ, δ, and κ) opioid receptor antagonist, nalmafene. We hypothesized that nonfood deprived, hens that did not experience a positive affective state when presented with a mealworm food reward due to the administration of nalmefene, would show minimal anticipatory and consummatory behavior when the same food reward was later presented. Hens (n = 80) were allocated to treatment groups, receiving either nalmefene or vehicle (0.9% saline) once or twice daily, for four consecutive days. An anticipatory test (AT) was performed on all days 30 min post-drug administration. Behavioral responses during the appetitive and consummatory phase were assessed on days 1, 3 and 4. Anticipatory behavior did not differ between treatment groups the first time hens were provided with mealworm food rewards. However, antagonism of opioid receptors reduced anticipatory and consummatory behavior on days 3 and 4. Feed intake of standard layer mash was not impacted by treatment, thus nalmefene reduced non-homeostatic food consumption but not homeostatic consumption. Behavioral observations during the AT provided no evidence that nalmefene treated hens were fearful, sedated or nauseous. The results suggest that we successfully blocked the hedonistic subjective component of reward in laying hens and provide evidence that this method could be used to investigate how hens perceive their environment and identify associated novel indicators to assess hen welfare.
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Affiliation(s)
- Peta S Taylor
- Animal Science, School of Environmental and Rural Science, Faculty of Science, Agriculture, Business and Law, University of New England, Armidale, NSW, Australia
| | - Adam S Hamlin
- School of Science and Technology, Faculty of Science, Agriculture, Business and Law, University of New England, Armidale, NSW, Australia
| | - Tamsyn M Crowley
- iMPACT Institute School of Medicine, Deakin University, Waurn Ponds, VIC, Australia
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Haloperidol discontinuation in a herpes simplex encephalitis patient with atypical abnormal movements using the herbal medicine Ukgansan-gami: A case report. Explore (NY) 2019; 16:328-331. [PMID: 31542303 DOI: 10.1016/j.explore.2019.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 08/27/2019] [Indexed: 11/22/2022]
Abstract
Recently, the herbal medicine Ukgansan (Yigansan in China, Yokukansan in Japan) was reported to be effective in the management of movement disorders. We report the case of a 62-year-old woman with herpes simplex encephalitis exhibiting atypical abnormal movements in the chronic stage. While controlling the abnormal movements with haloperidol, an antipsychotic agent, we prescribed Ukgansan-gami, an extract of a variant of Ukgansan, at a dose of 12 g/day to prevent the recurrence of abnormal movements and allow for the discontinuation of haloperidol. The patient was successfully treated with Ukgansan-gami, with no further recurrence of symptoms, making the use of haloperidol no longer necessary. The potential mechanism of action of Ukgansan involves the inhibition of nervous system hyperexcitability through the suppression of glutamate sodium channels, as well as attenuation of hypermotility through serotonin regulation. The present case suggests that herbal medicine therapy was likely to be an alternative to antipsychotics.
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McGrath N, Burman O, Dwyer C, Phillips CJ. Does the anticipatory behaviour of chickens communicate reward quality? Appl Anim Behav Sci 2016. [DOI: 10.1016/j.applanim.2016.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tahamtani FM, Nordgreen J, Brantsæter M, Østby GC, Nordquist RE, Janczak AM. Does Early Environmental Complexity Influence Tyrosine Hydroxylase in the Chicken Hippocampus and "Prefrontal" Caudolateral Nidopallium? Front Vet Sci 2016; 3:8. [PMID: 26904550 PMCID: PMC4749677 DOI: 10.3389/fvets.2016.00008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/21/2016] [Indexed: 12/17/2022] Open
Abstract
In adult chickens, the housing system influences hippocampal morphology and neurochemistry. However, no work has been done investigating the effects of the early life environment on chicken brain development. In the present study, we reared 67 commercial laying hens (Gallus gallus domesticus) in two environments that differed in the degree of complexity (aviary or cage system). These two groups were further divided into two age groups. At 20 weeks of age, 18 aviary-reared birds and 15 cage-reared birds were humanely euthanized and their brains dissected. At 24 weeks of age, a further 16 brains from aviary-reared birds and 18 brains from cage-reared birds were collected. These brains were prepared for immunohistochemical detection of tyrosine hydroxylase (TH), the rate-limiting enzyme in the biosynthesis of dopamine, in the hippocampus and the caudolateral nidopallium (NCL). There were no differences between the treatment groups in TH staining intensity in the hippocampus or the NCL. In the medial hippocampus, the right hemisphere had higher TH staining intensity compared to the left hemisphere. The opposite was true for the NCL, with the left hemisphere being more strongly stained compared to the right hemisphere. The present study supports the notion that the hippocampus is functionally lateralized, and our findings add to the body of knowledge on adult neural plasticity of the avian brain.
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Affiliation(s)
- Fernanda M Tahamtani
- Animal Welfare Research Group, Department of Production Animal Clinical Sciences, School of Veterinary Sciences, Norwegian University of Life Sciences , Oslo , Norway
| | - Janicke Nordgreen
- Animal Welfare Research Group, Department of Production Animal Clinical Sciences, School of Veterinary Sciences, Norwegian University of Life Sciences , Oslo , Norway
| | - Margrethe Brantsæter
- Animal Welfare Research Group, Department of Production Animal Clinical Sciences, School of Veterinary Sciences, Norwegian University of Life Sciences , Oslo , Norway
| | - Gunn C Østby
- Animal Welfare Research Group, Department of Production Animal Clinical Sciences, School of Veterinary Sciences, Norwegian University of Life Sciences , Oslo , Norway
| | - Rebecca E Nordquist
- Emotion and Cognition Research Program, Department of Farm Animal Health, Utrecht University , Utrecht , Netherlands
| | - Andrew M Janczak
- Animal Welfare Research Group, Department of Production Animal Clinical Sciences, School of Veterinary Sciences, Norwegian University of Life Sciences , Oslo , Norway
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Osier ND, Dixon CE. Catecholaminergic based therapies for functional recovery after TBI. Brain Res 2015; 1640:15-35. [PMID: 26711850 DOI: 10.1016/j.brainres.2015.12.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/11/2015] [Accepted: 12/14/2015] [Indexed: 11/15/2022]
Abstract
Among the many pathophysiologic consequences of traumatic brain injury are changes in catecholamines, including dopamine, epinephrine, and norepinephrine. In the context of TBI, dopamine is the one most extensively studied, though some research exploring epinephrine and norepinephrine have also been published. The purpose of this review is to summarize the evidence surrounding use of drugs that target the catecholaminergic system on pathophysiological and functional outcomes of TBI using published evidence from pre-clinical and clinical brain injury studies. Evidence of the effects of specific drugs that target catecholamines as agonists or antagonists will be discussed. Taken together, available evidence suggests that therapies targeting the catecholaminergic system may attenuate functional deficits after TBI. Notably, it is fairly common for TBI patients to be treated with catecholamine agonists for either physiological symptoms of TBI (e.g. altered cerebral perfusion pressures) or a co-occuring condition (e.g. shock), or cognitive symptoms (e.g. attentional and arousal deficits). Previous clinical trials are limited by methodological limitations, failure to replicate findings, challenges translating therapies to clinical practice, the complexity or lack of specificity of catecholamine receptors, as well as potentially counfounding effects of personal and genetic factors. Overall, there is a need for additional research evidence, along with a need for systematic dissemination of important study details and results as outlined in the common data elements published by the National Institute of Neurological Diseases and Stroke. Ultimately, a better understanding of catecholamines in the context of TBI may lead to therapeutic advancements. This article is part of a Special Issue entitled SI:Brain injury and recovery.
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Affiliation(s)
- Nicole D Osier
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA 15213, USA; School of Nursing, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - C Edward Dixon
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA 15213, USA; Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA 15260, USA; V.A. Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA.
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Tahamtani FM, Nordgreen J, Nordquist RE, Janczak AM. Early Life in a Barren Environment Adversely Affects Spatial Cognition in Laying Hens (Gallus gallus domesticus). Front Vet Sci 2015; 2:3. [PMID: 26664932 PMCID: PMC4672168 DOI: 10.3389/fvets.2015.00003] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 03/04/2015] [Indexed: 12/19/2022] Open
Abstract
Spatial cognition in vertebrates is adversely affected by a lack of environmental complexity during early life. However, to our knowledge, no previous studies have tested the effect of early exposure to varying degrees of environmental complexity on specific components of spatial cognition in chickens. There are two main rearing systems for laying hens in the EU: aviaries and cages. These two systems differ from one another in environmental complexity. The aim of the present study was to test the hypothesis that rearing in a barren cage environment relative to a complex aviary environment causes long-lasting deficits in the ability to perform spatial tasks. For this purpose, 24 white Dekalb laying hens, half of which had been reared in an aviary system and the other half in a conventional cage system, were tested in a holeboard task. Birds from both treatment groups learnt the task; however, the cage-reared hens required more time to locate rewards and had poorer levels of working memory. The latter finding supports the hypothesis that rearing in a barren environment causes long-term impairment of short-term memory in chickens.
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Affiliation(s)
- Fernanda M Tahamtani
- Animal Welfare Research Group, Department of Production Animal Clinical Science, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences (NMBU) , Oslo , Norway
| | - Janicke Nordgreen
- Animal Welfare Research Group, Department of Production Animal Clinical Science, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences (NMBU) , Oslo , Norway
| | - Rebecca E Nordquist
- Emotion and Cognition Group, Department of Farm Animal Health, Utrecht University , Utrecht , Netherlands
| | - Andrew M Janczak
- Animal Welfare Research Group, Department of Production Animal Clinical Science, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences (NMBU) , Oslo , Norway
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Reimert I, Bolhuis JE, Kemp B, Rodenburg TB. Emotions on the loose: emotional contagion and the role of oxytocin in pigs. Anim Cogn 2014; 18:517-32. [PMID: 25385575 PMCID: PMC4320767 DOI: 10.1007/s10071-014-0820-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 10/31/2014] [Accepted: 11/03/2014] [Indexed: 11/28/2022]
Abstract
We studied emotional contagion, a simple form of empathy, and the role of oxytocin herein in pigs. Two training pigs per pen (n = 16 pens) were subjected to a positive treatment (pairwise access to a large compartment filled with peat, straw and some chocolate raisins) and a negative treatment (social isolation in a small compartment) in a test room using a within-subjects design. Thereafter, two naive pen mates joined the training pigs in the test room, but were not given access to the treatments. This allowed testing for emotional contagion. Subsequently, the naive pigs, serving as their own controls, were given 24 IU of oxytocin or a placebo intranasally 30 min before accompanying the training pigs, which were exposed to either the negative or positive treatment, to the test room. Behavioral differences found between the positive and negative treatments (e.g., play and “tail wagging” vs. standing alert, urinating, defecating and ears backward) show that the treatments induced a positive and negative emotional state in the training pigs, respectively. Changes in behaviors of the training pigs with and without naive pigs present (e.g., in ears backwards) and of the naive pigs with and without training pigs present (e.g., in standing alert) indicated that emotional contagion occurred, especially during the negative treatment. Oxytocin did not seem to affect the behavior of the treated naive pigs, but did affect behaviors (e.g., defecating) of the training pigs which had not received oxytocin. This suggests a role for oxytocin in pig communication, which merits further research.
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Affiliation(s)
- Inonge Reimert
- Department of Animal Sciences, Adaptation Physiology Group, Wageningen University, P.O. Box 338, 6700 AH, Wageningen, The Netherlands,
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Tahamtani FM, Hansen TB, Orritt R, Nicol C, Moe RO, Janczak AM. Does rearing laying hens in aviaries adversely affect long-term welfare following transfer to furnished cages? PLoS One 2014; 9:e107357. [PMID: 25229879 PMCID: PMC4167866 DOI: 10.1371/journal.pone.0107357] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 08/11/2014] [Indexed: 11/24/2022] Open
Abstract
This study tests the hypothesis that hens that are reared in aviaries but produce in furnished cages experience poorer welfare in production than hens reared in caged systems. This hypothesis is based on the suggestion that the spatial restriction associated with the transfer from aviaries to cages results in frustration or stress for the aviary reared birds. To assess the difference in welfare between aviary and cage reared hens in production, non-beak trimmed white leghorn birds from both rearing backgrounds were filmed at a commercial farm that used furnished cage housing. The videos were taken at 19 and 21 weeks of age, following the birds' transition to the production environment at 16 weeks. Videos were analysed in terms of the performance of aversion-related behaviour in undisturbed birds, comfort behaviour in undisturbed birds, and alert behaviour directed to a novel object in the home cage. A decrease in the performance of the former behaviour and increase in the performance of the latter two behaviours indicates improved welfare. The results showed that aviary reared birds performed more alert behaviour near to the object than did cage reared birds at 19 but not at 21 weeks of age (P = 0.03). Blood glucose concentrations did not differ between the treatments (P>0.10). There was a significant difference in mortality between treatments (P = 0.000), with more death in aviary reared birds (5.52%) compared to cage birds (2.48%). The higher mortality of aviary-reared birds indicates a negative effect of aviary rearing on bird welfare, whereas the higher duration of alert behavior suggests a positive effect of aviary rearing.
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Affiliation(s)
- Fernanda M. Tahamtani
- Animal Welfare Research Group, Department of Production Animal Clinical Science, NMBU, Oslo, Norway
| | | | - Rachel Orritt
- Animal Welfare Research Group, Department of Production Animal Clinical Science, NMBU, Oslo, Norway
- School of Psychology, University of Lincoln, Lincoln, United Kingdom
| | - Christine Nicol
- Division of Animal Health and Husbandry, University of Bristol, Bristol, United Kingdom
| | - Randi O. Moe
- Animal Welfare Research Group, Department of Production Animal Clinical Science, NMBU, Oslo, Norway
| | - Andrew M. Janczak
- Animal Welfare Research Group, Department of Production Animal Clinical Science, NMBU, Oslo, Norway
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Moe RO, Nordgreen J, Janczak AM, Bakken M, Spruijt BM, Jensen P. Anticipatory and foraging behaviors in response to palatable food reward in chickens: effects of dopamine D2 receptor blockade and domestication. Physiol Behav 2014; 133:170-7. [PMID: 24878313 DOI: 10.1016/j.physbeh.2014.05.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 04/08/2014] [Accepted: 05/20/2014] [Indexed: 11/18/2022]
Abstract
Behaviors associated with anticipation and search for palatable food may provide information about dopaminergic reward processes and positive motivational affect in animals. The overall aim was to investigate the involvement of dopamine signaling in the regulation of cue-induced anticipation and search for palatable food reward in chicken, and whether domestication has affected expression of reward-related behaviors. The specific aims were to describe effects of mealworms (palatable food for hens) and haloperidol (a dopamine D2 antagonist) on foraging behaviors and cue-induced anticipatory behaviors in Red Junglefowl (RJF; the wild ancestor of modern laying hens) and a white layer hybrid (LSL). RJF (n=26) and LSL (n=20) were initially trained on a conditioning schedule to anticipate mealworms (unconditioned stimulus; US) 25s after exposure to a red light (conditioned stimulus; CS). For the experiment, hens received haloperidol or saline injections 30 min before exposure to one CS+US combination. Behavior was registered 10 min before CS and 10 min after US (foraging behaviors), and during the CS-US interval (anticipatory behaviors). Higher frequencies of CS-induced anticipatory head movements, faster approach to rewards, and higher frequency of foraging behaviors were found in LSL compared to RJF. Haloperidol suppressed CS-induced head movements in both breeds, and the frequency of foraging behaviors after reward delivery. The results support a role of dopamine signaling in the regulation of reward processes in chickens, and suggest that domestication has changed the threshold for perceiving food incentives and/or for expressing reward-related behaviors that may be indicative of positive motivational affect in hens.
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Affiliation(s)
- Randi Oppermann Moe
- Animal Welfare Research Group, NMBU, School of Veterinary Science, P.O. Box 8146 dep., N-0033 Oslo, Norway; Department of Production Animal Clinical Sciences, Norway.
| | - Janicke Nordgreen
- Animal Welfare Research Group, NMBU, School of Veterinary Science, P.O. Box 8146 dep., N-0033 Oslo, Norway; Department of Food Safety and Infection Biology, Norway
| | - Andrew M Janczak
- Animal Welfare Research Group, NMBU, School of Veterinary Science, P.O. Box 8146 dep., N-0033 Oslo, Norway; Department of Production Animal Clinical Sciences, Norway
| | - Morten Bakken
- NMBU, Department of Animal and Aquacultural Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Berry M Spruijt
- University of Utrecht, Department of Biology, P.O. Box 80125, 3508 TC Utrecht, The Netherlands
| | - Per Jensen
- Linköping University, IFM Biology, AVIAN Behavioural Genomics and Physiology Group, S-581 83 Linköping, Sweden
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Effects of signalled reward type, food status and a μ-opioid receptor antagonist on cue-induced anticipatory behaviour in laying hens (Gallus domesticus). Appl Anim Behav Sci 2013. [DOI: 10.1016/j.applanim.2013.08.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Nordquist RE, Zeinstra EC, Rodenburg TB, van der Staay FJ. Effects of maternal care and selection for low mortality on tyrosine hydroxylase concentrations and cell soma size in hippocampus and nidopallium caudolaterale in adult laying hen1. J Anim Sci 2013; 91:137-46. [DOI: 10.2527/jas.2012-5227] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- R. E. Nordquist
- Emotion and Cognition Group, Department of Farm Animal Health, Utrecht University, the Netherlands
- Rudolf Magnus Institute for Neurosciences, University Medical Center Utrecht, Utrecht, the Netherlands
| | - E. C. Zeinstra
- Emotion and Cognition Group, Department of Farm Animal Health, Utrecht University, the Netherlands
| | - T. B. Rodenburg
- Animal Breeding and Genomics Centre, Wageningen University, the Netherlands
- Behavioural Ecology Group, Wageningen University, the Netherlands
| | - F. J. van der Staay
- Emotion and Cognition Group, Department of Farm Animal Health, Utrecht University, the Netherlands
- Rudolf Magnus Institute for Neurosciences, University Medical Center Utrecht, Utrecht, the Netherlands
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Seehuus B, Blokhuis H, Mendl M, Keeling L. Developing a method to investigate motivational sequences in the chick. ACTA AGR SCAND A-AN 2012. [DOI: 10.1080/09064702.2012.721388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Moe RO, Stubsjøen SM, Bohlin J, Flø A, Bakken M. Peripheral temperature drop in response to anticipation and consumption of a signaled palatable reward in laying hens (Gallus domesticus). Physiol Behav 2012; 106:527-33. [PMID: 22513240 DOI: 10.1016/j.physbeh.2012.03.032] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 01/23/2012] [Accepted: 03/26/2012] [Indexed: 11/19/2022]
Abstract
The present study describes effects of anticipation and consumption of a palatable reward on comb surface temperature. The purpose was to investigate temperature responses as a potential physiological indicator of positive emotional states in laying hens. A rise in body temperature in response to stimuli predictive of or during exposure to unpleasant events has been interpreted as evidence of emotions in mammals and avians. However, this phenomenon has so far only been studied during anticipation of or exposure to negative events; i.e., emotions of a negative valence. Infrared thermography was used to record potential alterations in comb surface temperature to a conditioned cue signaling a reward (mealworms) and during reward delivery. On average, comb temperature dropped 1.5 °C (95% CI: +/-1.2 °C) after exposure to CS and consumption of reward (p~0.0014) when initial comb temperature was above 30 °C. Such temperature drop indicates a peripheral vasoconstriction and has clear resemblances to emotional fever as seen during negative emotional states. Thus, we propose that a drop in peripheral temperature reflects emotional arousal more than emotional valence. Substantial temperature responses due to diet-induced thermogenesis were found, further emphasizing a cautious interpretation of altered comb temperature in studies of animal welfare.
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Affiliation(s)
- Randi Oppermann Moe
- Norwegian School of Veterinary Science, Box 8146 Dep., NO-0033 Oslo, Norway.
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