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Zapata-Cardona J, Ceballos MC, Rodríguez BDJ. Music and Emotions in Non-Human Animals from Biological and Comparative Perspectives. Animals (Basel) 2024; 14:1491. [PMID: 38791707 PMCID: PMC11117248 DOI: 10.3390/ani14101491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
The effects of sound stimulation as a sensorial environmental enrichment for captive animals have been studied. When appropriately implemented for farm animals, it can improve welfare, health, and productivity. Furthermore, there are indications that music can induce positive emotions in non-human animals, similar to humans. Emotion is a functional state of the organism involving both physiological processes, mediated by neuroendocrine regulation, and changes in behavior, affecting various aspects, including contextual perception and welfare. As there is very limited information on non-human animals, the objective of this review is to highlight what is known about these processes from human biological and comparative perspectives and stimulate future research on using music to improve animal welfare.
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Affiliation(s)
- Juliana Zapata-Cardona
- Grupo de Investigación Patobiología QUIRON, Escuela de Medicina Veterinaria, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 50010, Colombia;
| | - Maria Camila Ceballos
- Faculty of Veterinary Medicine, University of Calgary, Clinical Skills Building, 11877-85th Street NW, Calgary, AB T3R 1J3, Canada
| | - Berardo de Jesús Rodríguez
- Grupo de Investigación Patobiología QUIRON, Escuela de Medicina Veterinaria, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 50010, Colombia;
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Travain T, Lazebnik T, Zamansky A, Cafazzo S, Valsecchi P, Natoli E. Environmental enrichments and data-driven welfare indicators for sheltered dogs using telemetric physiological measures and signal processing. Sci Rep 2024; 14:3346. [PMID: 38336994 PMCID: PMC10858038 DOI: 10.1038/s41598-024-53932-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/06/2024] [Indexed: 02/12/2024] Open
Abstract
Shelters are stressful environments for domestic dogs which are known to negatively impact their welfare. The introduction of outside stimuli for dogs in this environment can improve their welfare and life conditions. However, our current understanding of the influence of different stimuli on shelter dogs' welfare is limited and the data is still insufficient to draw conclusions. In this study, we collected 28 days (four weeks) of telemetry data from eight male dogs housed in an Italian shelter for a long period of time. During this period, three types of enrichment were introduced into the dogs' pens for one week each: entertaining objects, intraspecific, and interspecific social enrichment, by means of the presence of female conspecifics and the presence of a human. To quantify their impact, we introduce novel metrics as indicators of sheltered dogs' welfare based on telemetry data: the variation of heart rate, muscle activity, and body temperature from an average baseline day, quality of sleep, and the regularity for cyclicity of the aforementioned parameters, based on the day-night cycle. Using these metrics, we show that while all three stimuli statistically improve the dogs' welfare, the variance between individual dogs is large. Moreover, our findings indicate that the presence of female conspecific is the best stimulus among the three explored options which improves both the quality of sleep and the parameters' cyclicity. Our results are consistent with previous research findings while providing novel data-driven welfare indicators that promote objectivity. Thus, this research provides some useful guidelines for managing shelters and improving dogs' welfare.
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Affiliation(s)
- Tiziano Travain
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy.
| | - Teddy Lazebnik
- Department of Mathematics, Ariel University, Ariel, Israel
- Department of Cancer Biology, Cancer Institute, University College London, London, UK
| | - Anna Zamansky
- Information Systems Department, University of Haifa, Haifa, Israel
| | | | - Paola Valsecchi
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
- Sleep Disorders Center, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Eugenia Natoli
- Canile Sovrazonale, ASL Roma 3 (Local Health Unit Rome 3), Rome, Italy
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Gueguen L, Henry S, Delbos M, Lemasson A, Hausberger M. Selected Acoustic Frequencies Have a Positive Impact on Behavioural and Physiological Welfare Indicators in Thoroughbred Racehorses. Animals (Basel) 2023; 13:2970. [PMID: 37760370 PMCID: PMC10525862 DOI: 10.3390/ani13182970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 08/12/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
(1) Background: Since antiquity, it is considered that sounds influence human emotional states and health. Acoustic enrichment has also been proposed for domestic animals. However, in both humans and animals, effects vary according to the type of sound. Human studies suggest that frequencies, more than melodies, play a key role. Low and high frequencies, music tuning frequency and even EEG slow waves used for 'neurofeedback' produce effects. (2) Methods: We tested the possible impact of such pure frequencies on racehorses' behavior and physiology. A commercial non-audible acoustic stimulus, composed of an array of the above-mentioned frequencies, was broadcasted twice daily and for three weeks to 12 thoroughbred horses in their home stall. (3) Results: The results show a decrease in stereotypic behaviors and other indicators such as yawning or vacuum chewing, an increase in the time spent in recumbent resting and foraging, and better hematological measures during and after the playback phase for 4 of the 10 physiological parameters measured. (4) Conclusions: These results open new lines of research on possible ways of alleviating the stress related to housing and training conditions in racehorses and of improving physical recovery.
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Affiliation(s)
- Léa Gueguen
- Univ Rennes, Normandie Univ, CNRS, EthoS (Éthologie Animale et Humaine)—UMR 6552, 35000 Rennes, France; (S.H.); (M.D.); (A.L.); (M.H.)
- UMR 8002 Integrative Neuroscience and Cognition Center, CNRS, Université Paris-Cité, 75006 Paris, France
| | - Séverine Henry
- Univ Rennes, Normandie Univ, CNRS, EthoS (Éthologie Animale et Humaine)—UMR 6552, 35000 Rennes, France; (S.H.); (M.D.); (A.L.); (M.H.)
| | - Maëlle Delbos
- Univ Rennes, Normandie Univ, CNRS, EthoS (Éthologie Animale et Humaine)—UMR 6552, 35000 Rennes, France; (S.H.); (M.D.); (A.L.); (M.H.)
| | - Alban Lemasson
- Univ Rennes, Normandie Univ, CNRS, EthoS (Éthologie Animale et Humaine)—UMR 6552, 35000 Rennes, France; (S.H.); (M.D.); (A.L.); (M.H.)
- Institut Universitaire de France, 75005 Paris, France
| | - Martine Hausberger
- Univ Rennes, Normandie Univ, CNRS, EthoS (Éthologie Animale et Humaine)—UMR 6552, 35000 Rennes, France; (S.H.); (M.D.); (A.L.); (M.H.)
- UMR 8002 Integrative Neuroscience and Cognition Center, CNRS, Université Paris-Cité, 75006 Paris, France
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Georgiou SG, Sideri AI, Anagnostou TL, Gouletsou PG, Tsioli VG, Galatos AD. Effect of Classical Music on Depth of Sedation and Induction Propofol Requirements in Dogs. Vet Sci 2023; 10:433. [PMID: 37505838 PMCID: PMC10383266 DOI: 10.3390/vetsci10070433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/14/2023] [Accepted: 06/29/2023] [Indexed: 07/29/2023] Open
Abstract
The main objective of this prospective, randomized, blind, cross-over experimental study was to evaluate the effect of classical music on the depth of sedation and propofol requirements for the induction of anaesthesia in dogs. Twenty dogs were involved, and each was subjected to three different treatments with a 3-month gap: Chopin music, Mozart music, and no music, via loudspeakers. The dogs were premedicated with acepromazine and butorphanol by intramuscular injection, and anaesthesia was induced using propofol intravenously. To compare the depth of sedation and propofol requirements for the induction of anaesthesia among the different treatments, we utilized non-parametric tests (Kruskal-Wallis test) for the depth of sedation due to a slight deviation from the normal distribution and parametric (ANOVA) for propofol requirements. When exposed to music (Chopin or Mozart), dogs exhibited deeper sedation and required less propofol for their intubation compared to the no-music treatment (p < 0.05). Exposure to classical music had a positive impact on the level of sedation, and more profound central nervous system depression seemed to contribute to approximately 20% lower propofol dose requirements for tracheal intubation. Therefore, classical music during the preoperative period appeared to exert a beneficial effect, at least when applying the specific pre-anaesthetic medications used in the present study.
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Affiliation(s)
- Stefanos G Georgiou
- Clinic of Surgery, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece
| | - Aikaterini I Sideri
- Clinic of Surgery, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece
| | - Tilemachos L Anagnostou
- Anaesthesia and Intensive Care Unit, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
| | - Pagona G Gouletsou
- Clinic of Obstetrics and Reproduction, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece
| | - Vassiliki G Tsioli
- Clinic of Surgery, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece
| | - Apostolos D Galatos
- Clinic of Surgery, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece
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Pennington E, Springer C, Albright J, Castel A. Evaluation of different methods of environmental enrichment to control anxiety in dogs undergoing hemilaminectomy after acute intervertebral disc extrusion: a randomized double-blinded study. Front Vet Sci 2023; 10:1124982. [PMID: 37323840 PMCID: PMC10267703 DOI: 10.3389/fvets.2023.1124982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/21/2023] [Indexed: 06/17/2023] Open
Abstract
Objective The goal of this randomized, double-blinded, placebo-controlled study was to evaluate the effect of environmental enrichment (EE) on post-operative pain and anxiety in dogs following hemilaminectomy for acute intervertebral disc extrusion (IVDE). Methods Twenty healthy client-owned dogs undergoing a hemilaminectomy for IVDE with the same immediate post-operative analgesia protocol were randomly assigned to either the EE or standard environment (SE) group post-operatively. Recovery was achieved in an intensive care room (SE) or a separate quiet room (EE) equipped with white noise and classical music. EE dogs were also exposed to dog-appeasing pheromones, essential oil scents, and positive human interactions and were provided meals through food toys. A blinded evaluator assessed all dogs using the modified Glasgow Composite Pain Scale (mGCPS) on presentation and at several time points post-operatively. A rescue injection of the opioid methadone was given to the dogs with an mGCPS score of ≥5/20. Dogs received the antidepressant trazodone when anxious behaviors (5 mg/kg) were observed. The mGCPS scores, the latencies to receive the first methadone and trazodone doses and to eat the first meal, the number of methadone and trazodone doses, and the number of meals ingested in the first 24 and 48 h post-surgery were compared using Wilcoxon tests, and Benjamini-Hochberg correction for false discovery rate was applied. Results Although median mGCPS scores did not differ between the groups, compared to SE dogs (n = 10), EE dogs (n = 6) received trazodone earlier (p = 0.019), were administered fewer methadone injections at 24 h (p = 0.043), and ate more at 48 h post-surgery (p = 0.007). Therefore, EE and anti-anxiety medications could be beneficial in improving the wellbeing of dogs post-operatively.
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Affiliation(s)
- Ellery Pennington
- Small Animal Clinical Sciences, The University of Tennessee, Knoxville, TN, United States
| | - Cary Springer
- Small Animal Clinical Sciences, The University of Tennessee, Knoxville, TN, United States
| | - Julia Albright
- Small Animal Clinical Sciences, The University of Tennessee, Knoxville, TN, United States
| | - Aude Castel
- College of Veterinary Medicine, The University of Tennessee, Knoxville, TN, United States
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Nian HY, Zhang RX, Ding SS, Wang YL, Li JF, Liu HG, Li JH, Li X, Bao J. Emotional responses of piglets under long-term exposure to negative and positive auditory stimuli. Domest Anim Endocrinol 2023; 82:106771. [PMID: 36332459 DOI: 10.1016/j.domaniend.2022.106771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 09/21/2022] [Accepted: 10/10/2022] [Indexed: 11/20/2022]
Abstract
The stress caused by sound is inevitable. The stress caused by noise and the positive effects of music can affect the endocrine of animals and their welfare. In this study, a total of 72 hybrid piglets (Large White × Duroc × Min pig) were randomly divided into 3 groups, including music (Mozart K.448, 60-70 dB), noise (recorded mechanical noise, 80-85 dB), and control (natural background sound, <40 dB) groups. S-IgA (secretory immunoglobulin A), IL-6 (interleukin-6), IL-8 (interleukin-8), and positive emotion-related behaviors were used as indicators to discuss whether noise induced stress and inflammation in piglets or whether music could have positive effects. Six hours of auditory exposure were given daily (10:00-16:00), which lasted for 56 days. Behavioral responses of the piglets were observed, and the concentrations of salivary S-IgA and serum IL-6 and IL-8 were measured. The results showed that the concentration of S-IgA increased in the noise and control groups on the 57th day (P < 0.05); S-IgA concentration in the music group was unchanged after long-term music exposure. The concentrations of IL-6 and IL-8 showed that long-term noise exposure might lead to stress and inflammation in piglets. Tail-wagging and play behaviors of the piglets in the music group were significantly greater than those in the noise and control groups, which implied that long-term music exposure improved the emotional state of the piglets in a restricted and barren environment.
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Affiliation(s)
- H-Y Nian
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China
| | - R-X Zhang
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China
| | - S-S Ding
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China
| | - Y-L Wang
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China
| | - J-F Li
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China
| | - H-G Liu
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China
| | - J-H Li
- College of Life Science, Northeast Agricultural University, 150030 Harbin, Heilongjiang, P.R. China
| | - X Li
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China
| | - J Bao
- College of Animal Science and Technology, Northeast Agricultural University,150030 Harbin, Heilongjiang, P.R. China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Changjiang Road No. 150030 Harbin, Heilongjiang, P.R. China.
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Gastrophysics for pets: Tackling the growing problem of overweight/obese dogs. Appl Anim Behav Sci 2022. [DOI: 10.1016/j.applanim.2022.105765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Paz JEG, da Costa FVA, Nunes LN, Monteiro ER, Jung J. Evaluation of music therapy to reduce stress in hospitalized cats. J Feline Med Surg 2022; 24:1046-1052. [PMID: 34930057 PMCID: PMC10812302 DOI: 10.1177/1098612x211066484] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This study aimed to evaluate the use of two different types of music - cat-specific music and classical music - compared with no music, to reduce stress in cats during hospitalization. METHODS Thirty-five hospitalized cats were randomly divided into three groups and each group received a different stimulus - cat-specific music, classical music or no music (control) - throughout their hospitalization. Respiratory rate, salivary cortisol and social interaction were documented. A blinded researcher performed the Cat Stress Score (CSS) during the video analysis of recordings at five specific times over 31 h of hospitalization. RESULTS There was no difference in the mean CSS between cats listening to cat-specific music, classical music and control throughout the five evaluations. Cat-specific music had a higher percentage of positive social interactions than the other groups on the first evaluation (P <0.05). The average respiratory rate was significantly lower in the classical music group vs control on the fourth evaluation (P <0.05). Although statistically insignificant, the average respiratory rate decreased only in the classical music group during the five evaluations. Cortisol quantification did not seem to follow the CSS results. However, owing to the low and unrepresentative number of samples, it was not possible to perform statistical analysis on these results or a group sample comparison. CONCLUSIONS AND RELEVANCE Both cat-specific music and classical music seem to have some benefit to hospitalized cats. The salivary cortisol analysis was not adequate nor useful to measure stress in hospitalized cats in our study.
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Affiliation(s)
- Juliane EG Paz
- Veterinary Science Post Graduation Program, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernanda VA da Costa
- Department of Animal Medicine, Faculty of Veterinary Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Luciana N Nunes
- Department of Statistics, Institute of Mathematics and Statistics, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Eduardo R Monteiro
- Department of Animal Medicine, Faculty of Veterinary Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Jenifer Jung
- Veterinary Clinics Hospital, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Kinnaird RF, Wells DL. The effect of auditory stimulation on pet dogs’ reactions to owner separation. Appl Anim Behav Sci 2022. [DOI: 10.1016/j.applanim.2022.105688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Somppi S, Törnqvist H, Koskela A, Vehkaoja A, Tiira K, Väätäjä H, Surakka V, Vainio O, Kujala MV. Dog–Owner Relationship, Owner Interpretations and Dog Personality Are Connected with the Emotional Reactivity of Dogs. Animals (Basel) 2022; 12:ani12111338. [PMID: 35681804 PMCID: PMC9179432 DOI: 10.3390/ani12111338] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The relationship between owner and the dog affects the dog’s attachment behaviors and stress coping. In turn, the quality of the relationship may affect owner’s interpretations about their dog’s behavior. Here, we assessed dogs’ emotional responses from heart rate variability and behavioral changes during five different situations. Dog owners evaluated the emotion (valence and arousal) of their dog after each situation. We found that both negative and positive incidents provoked signs of emotional arousal in dogs. Owners detected the dog’s arousal especially during fear- and stress-evoking situations. The dog–owner relationship did not affect owners’ interpretation of dogs’ emotion. However, the dog–owner relationship was reflected in the dog’s emotional reactions. Close emotional bond with the owner appeared to decrease the arousal of the dogs. Dog owners’ frequent caregiving of their dog was associated with increased attachment behaviors and heightened arousal of dogs. Owners rated the disadvantages of the dog relationship higher for the dogs that were less owner-oriented and less arousable. Dog’s arousal may provoke dog’s need to seek human attention, which in turn may promote the development of emotional bond. Abstract We evaluated the effect of the dog–owner relationship on dogs’ emotional reactivity, quantified with heart rate variability (HRV), behavioral changes, physical activity and dog owner interpretations. Twenty nine adult dogs encountered five different emotional situations (i.e., stroking, a feeding toy, separation from the owner, reunion with the owner, a sudden appearance of a novel object). The results showed that both negative and positive situations provoked signs of heightened arousal in dogs. During negative situations, owners’ ratings about the heightened emotional arousal correlated with lower HRV, higher physical activity and more behaviors that typically index arousal and fear. The three factors of The Monash Dog–Owner Relationship Scale (MDORS) were reflected in the dogs’ heart rate variability and behaviors: the Emotional Closeness factor was related to increased HRV (p = 0.009), suggesting this aspect is associated with the secure base effect, and the Shared Activities factor showed a trend toward lower HRV (p = 0.067) along with more owner-directed behaviors reflecting attachment related arousal. In contrast, the Perceived Costs factor was related to higher HRV (p = 0.009) along with less fear and less owner-directed behaviors, which may reflect the dog’s more independent personality. In conclusion, dogs’ emotional reactivity and the dog–owner relationship modulate each other, depending on the aspect of the relationship and dogs’ individual responsivity.
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Affiliation(s)
- Sanni Somppi
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FI-00014 Helsinki, Finland; (H.T.); (A.K.); (K.T.); (O.V.); (M.V.K.)
- Department of Psychology, Faculty of Education and Psychology, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Correspondence:
| | - Heini Törnqvist
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FI-00014 Helsinki, Finland; (H.T.); (A.K.); (K.T.); (O.V.); (M.V.K.)
- Department of Psychology, Faculty of Education and Psychology, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Aija Koskela
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FI-00014 Helsinki, Finland; (H.T.); (A.K.); (K.T.); (O.V.); (M.V.K.)
| | - Antti Vehkaoja
- Faculty of Medicine and Health Technology, Tampere University, P.O. Box 692, FI-33101 Tampere, Finland;
| | - Katriina Tiira
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FI-00014 Helsinki, Finland; (H.T.); (A.K.); (K.T.); (O.V.); (M.V.K.)
| | - Heli Väätäjä
- Research Group for Emotions, Sociality, and Computing, Faculty of Information Technology and Communication Sciences, Tampere University, P.O. Box 100, FI-33014 Tampere, Finland;
- Master School, Lapland University of Applied Sciences, Jokiväylä 11 B, FI-96300 Rovaniemi, Finland;
| | - Veikko Surakka
- Master School, Lapland University of Applied Sciences, Jokiväylä 11 B, FI-96300 Rovaniemi, Finland;
| | - Outi Vainio
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FI-00014 Helsinki, Finland; (H.T.); (A.K.); (K.T.); (O.V.); (M.V.K.)
| | - Miiamaaria V. Kujala
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FI-00014 Helsinki, Finland; (H.T.); (A.K.); (K.T.); (O.V.); (M.V.K.)
- Department of Psychology, Faculty of Education and Psychology, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, P.O. Box 12200, FI-00076 Aalto, Finland
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Impact of Music in Males and Females for Relief from Neurodegenerative Disorder Stress. CONTRAST MEDIA & MOLECULAR IMAGING 2022; 2022:3080437. [PMID: 35494208 PMCID: PMC9019444 DOI: 10.1155/2022/3080437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/05/2022] [Indexed: 11/21/2022]
Abstract
Neurological imbalance sometimes resulted in stress, which is experienced by the number of people at some moment in their life. A considerable measurement scheme can quantify the stress level in an individual, in which music has always been considered as the best therapy for stress relief in healthy human being as well in severe medical conditions. In this work, the impact of four types of music interventions with the lyrics of Hindi music and varying spectral centroid has been studied for an analysis of stress relief in males and females. The self-reported data for stress using state-trait anxiety (STA) and electroencephalography (EEG) signals for 14 channels in response to music interventions have been considered. Features such as Hjorth (activity, mobility, and complexity), variance, standard deviation, skew, kurtosis, and mean have been extracted from five bands (delta, theta, alpha, beta, and gamma) of each channel of the recorded EEG signals from 9 males and 9 females of the age category between 18 and 25 years. The support vector machine classifier has been used to classify three subsets: (i) male and female, (ii) baseline and female, and (iii) baseline and male. The noteworthy accuracy of 100% was found at the delta band for the first subset, beta and gamma bands for the second subset, and beta, gamma, and delta bands for the third subset. STA score has shown more deviation in the male category than in female, which gives a clear insight into the impact of music intervention with varying spectral centroid that has a higher impact to relieve stress in the male category than the female category.
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Kriengwatana BP, Mott R, ten Cate C. Music for animal welfare: a critical review & conceptual framework. Appl Anim Behav Sci 2022. [DOI: 10.1016/j.applanim.2022.105641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
There is a lack of clarity on whether pigs can emotionally respond to musical stimulation and whether that response is related to music structure. Qualitative Behavioral Assessment (QBA) was used to evaluate effects of 16 distinct musical pieces (in terms of harmonic structure) on emotional responses in nursery pigs (n = 30) during four periods: "habituation", "treatments", "breaks" and "final". Data were evaluated using Principal component analysis (PCA). Two principal components (PC) were considered in the analysis: PC1, characterized as a positive emotions index, included the emotional responses content, playful, sociable, and happy, whereas PC2, characterized as a negative emotions index, included fearful, inquisitive, and uneasy with positive loadings, and relaxed and calm with negative loadings. Musical stimulation (treatment) increased (P < 0.01) both emotional indices, compared to other periods and this response was influenced by harmonic characteristics of the music. We concluded that pigs have a wide variety of emotional responses, with different affective states related to the music structure used, providing evidence of its potential use as environmental enrichment for this species.
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Cobb MC, Carter A, Lill A, Bennett PC. Perceived importance of specific kennel management practices for the provision of canine welfare. Appl Anim Behav Sci 2022. [DOI: 10.1016/j.applanim.2022.105591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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15
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Effect of Music on Stress Parameters in Dogs during a Mock Veterinary Visit. Animals (Basel) 2022; 12:ani12020187. [PMID: 35049809 PMCID: PMC8772971 DOI: 10.3390/ani12020187] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/06/2022] [Accepted: 01/10/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Visits to the vet are stressful for many pet dogs, but less is known about how measures of stress change over the course of a visit. Identifying appropriate measures of canine stress, along with successful interventions which alleviate stress in dogs during a veterinary visit, will be of great benefit to dogs and people. Music therapy has been successfully used to reduce stress and anxiety in people and other animals. Specifically, a process called entrainment, which involves playing music at a particular tempo aimed at synchronizing physiological responses, has been implemented with success in humans. The aim of this study was to examine a range of behavioral and physiological measures in dogs over the duration of a veterinary visit and to establish if bespoke music, which mimicked the tempo of their resting heart rate, could improve wellbeing. The results indicated that certain measures increased over time, indicating that dogs became increasingly stressed. Music was not shown to have a demonstrated effect across measures, suggesting that the stressor may be too extreme for this type of intervention to have a positive effect, or that music therapy requires modification before it can be successful in alleviating stress in dogs during a veterinary visit. Abstract Veterinary visits can be stressful for dogs, but how their wellbeing changes during a visit is not well understood. Music therapy has been successfully used in clinical practice to alleviate stress and anxiety in people. The present study aimed to understand how canine stress changes during a veterinary visit, establish the effect of music, and highlight measures which may be of practical use. In a randomized crossover design, dogs were exposed to no music and a bespoke piece of classical music at a tempo designed to match their resting heart rate during a mock veterinary visit. Dogs were scored as more “afraid” during the physical examination compared to when they were in the hospital kennel (p < 0.001). Salivary cortisol, IgA, and infrared temperature all increased significantly (p < 0.05) from baseline to post-kennel and post-examination, with no effect of music treatment. Core body temperature (p = 0.010) and the odds of ‘relaxed’ lips (p = 0.020) were lower when dogs were exposed to music compared to control visits. Overall, dogs experienced changes in physiology and behavior, indicative of increased stress, over the course of the visit. Additional research is required to further understand the effect that bespoke music may have in alleviating canine stress during veterinary visits.
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Martikainen P, Korhonen K, Tarkiainen L. Heavy metal toxicity and mortality-association between density of heavy metal bands and cause specific hospital admissions and mortality: population based cohort study. BMJ 2021; 375:e067633. [PMID: 34911746 DOI: 10.1136/bmj-2021-067633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To assess the association between area level density of heavy metal bands and cause specific hospital admissions and mortality. DESIGN Longitudinal register based cohort study. SETTING 311 municipalities in Finland. PARTICIPANTS 3 644 944 people aged 15 to 70 residing in Finland at the end of 2001. MAIN OUTCOME MEASURES Hospital admission and mortality from all causes, internal causes, alcohol attributable causes, accidental injury and violence, suicide or self-harm, and mental health related causes. Appendicitis and toxic effects of metals were negative control outcomes. RESULTS During 50.4 million person years of follow-up in 2002-17, 4 237 807 person years with hospital admissions were observed and 221 912 individuals died. Mortality in municipalities with a moderate density of heavy metal bands (<5.7 per 10 000 inhabitants) was lower than in municipalities with no heavy metal bands. Hospital admission rates were lower in municipalities with heavy metal bands compared with those with none. These associations could be explained partly by differences in the sociodemographic characteristics of residents in these municipalities. After adjustment for individual characteristics and area level cultural and economic characteristics-proportion of the population with no religious affiliation, unemployment rate, and per capita expenditure on culture and education-large cities with a high density of heavy metal bands (8.2-11.2 per 10 000) showed a mortality advantage (hazard ratio 0.92, 95% confidence interval 0.88 to 0.96). In contrast, the association for hospital admission was fully attenuated (incidence rate ratio 0.99, 95% confidence interval 0.92 to 1.06). The cause specific analysis showed similar results, with the association most pronounced for alcohol attributable mortality (hazard ratio 0.83, 95% confidence interval 0.75 to 0.93 for cities with a high density of heavy metal bands) and alcohol attributable hospital admissions (incidence rate ratio 0.84, 95% confidence interval 0.74 to 0.97 for cities with a high density of heavy metal bands) in the fully adjusted models. No association with heavy metal band density was found for the analysis using appendicitis as a negative control outcome. CONCLUSIONS The study found no evidence for adverse health outcomes with increasing density of heavy metal bands. Cities with a high density of heavy metal bands showed slightly lower rates of mortality and of hospital admissions for alcohol related problems and self-harm. Although residual confounding remains a problem in observational studies, vibrant local heavy metal scenes-comparable to many other forms of cultural capital-might help to promote health through healthier lifestyles, better coping mechanisms, and a stronger sense of community.
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Affiliation(s)
- Pekka Martikainen
- Population Research Unit, Faculty of Social Sciences, University of Helsinki, Helsinki, Finland
- Max Planck Institute for Demographic Research, Rostock, Germany
- Department of Public Health Sciences, Stockholm University, Stockholm, Sweden
| | - Kaarina Korhonen
- Population Research Unit, Faculty of Social Sciences, University of Helsinki, Helsinki, Finland
| | - Lasse Tarkiainen
- Population Research Unit, Faculty of Social Sciences, University of Helsinki, Helsinki, Finland
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Lamon TK, Slater MR, Moberly HK, Budke CM. Welfare and quality of life assessments for shelter dogs: A scoping review. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Wascher CAF. Heart rate as a measure of emotional arousal in evolutionary biology. Philos Trans R Soc Lond B Biol Sci 2021; 376:20200479. [PMID: 34176323 PMCID: PMC8237168 DOI: 10.1098/rstb.2020.0479] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2021] [Indexed: 12/18/2022] Open
Abstract
How individuals interact with their environment and respond to changes is a key area of research in evolutionary biology. A physiological parameter that provides an instant proxy for the activation of the automatic nervous system, and can be measured relatively easily, is modulation of heart rate. Over the past four decades, heart rate has been used to assess emotional arousal in non-human animals in a variety of contexts, including social behaviour, animal cognition, animal welfare and animal personality. In this review, I summarize how measuring heart rate has provided new insights into how social animals cope with challenges in their environment. I assess the advantages and limitations of different technologies used to measure heart rate in this context, including wearable heart rate belts and implantable transmitters, and provide an overview of prospective research avenues using established and new technologies, with a special focus on implications for applied research on animal welfare. This article is part of the theme issue 'Measuring physiology in free-living animals (Part II)'.
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Affiliation(s)
- Claudia A. F. Wascher
- Behavioural Ecology Research Group, School of Life Sciences, Anglia Ruskin University, East Road, Cambridge CB1 1PT, United Kingdom
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19
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Mott R, Dowell F, Evans N. Use of the Polar V800 and Actiheart 5 heart rate monitors for the assessment of heart rate variability (HRV) in horses. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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20
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Li J, Li X, Liu H, Li J, Han Q, Wang C, Zeng X, Li Y, Ji W, Zhang R, Bao J. Effects of music stimulus on behavior response, cortisol level, and horizontal immunity of growing pigs. J Anim Sci 2021; 99:6262702. [PMID: 33939813 DOI: 10.1093/jas/skab043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 02/04/2021] [Indexed: 01/18/2023] Open
Abstract
An enriched environment is widely used to improve domestic animals' welfare and promote their natural behaviors. Music can reduce abnormal behavior in humans, nonhuman primates, and rodents. However, little is known about the effects of music on pigs. This study aims to explore the effects of repeated music stimulation on the behavior, physiology, and immunity of growing pigs. A total of 72 hybrid piglets (Large White × Duroc × Minpig) were randomly divided into three groups, including music (Mozart K.448, 60 to 70 dB), noise (recorded mechanical noise, 80 to 85 dB), and control (natural background sound, <40 dB), and 6 h sound stimulation was given per day (1000 to 1600 hours) from 40 to 100 d of age. The behavioral activities of the pigs were observed during the music stimulation, and their serum cortisol, salivary cortisol, and serum immune indices were also measured. Compared with the control group, the music group and noise group increased activity but decreased lying of pigs (P < 0.05). A significant increase in tail-wagging, playing, and exploring behaviors of pigs was found in the music group (P < 0.05), and the noise significantly increased the aggressive behavior of the pigs (P < 0.05). Tail-wagging, playing, exploring, manipulating, and aggressive behaviors decreased over time. Short-term (8 d) music stimulus had a lower cortisol level than that of the noise and control groups (P < 0.05), whereas long-term (60 d) music stimulus increased immunoglobulin G (IgG), interleukin-2 (IL-2), and interferon-gamma (IFN-γ) levels (P < 0.05) and decreased interleukin-4 (IL-4) level (P < 0.05). Long-term noise stimulus significantly reduced the level of IgG (P < 0.05) but did not affect the level of IL-2, IL-4, and IFN-γ levels (P > 0.05). In conclusion, short-term music stimulus (8 d) reduced the stress response, whereas long-term music stimulus (60 d) enhanced the immune responses. In addition, the noise increased the aggressive behavior, and long-term noise reduced the immunity of the growing pigs.
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Affiliation(s)
- Jiafang Li
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Xiang Li
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Honggui Liu
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, 150030 Harbin, P.R. China
| | - Qian Han
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Chao Wang
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Xiangyin Zeng
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Yutao Li
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Wenbo Ji
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Runxiang Zhang
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Jun Bao
- Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
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Morris EM, Kitts-Morgan SE, Spangler DM, Gebert J, Vanzant ES, McLeod KR, Harmon DL. Feeding Cannabidiol (CBD)-Containing Treats Did Not Affect Canine Daily Voluntary Activity. Front Vet Sci 2021; 8:645667. [PMID: 33996972 PMCID: PMC8118201 DOI: 10.3389/fvets.2021.645667] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/05/2021] [Indexed: 12/24/2022] Open
Abstract
Growing public interest in the use of cannabidiol (CBD) for companion animals has amplified the need to elucidate potential impacts. The purpose of this investigation was to determine the influence of CBD on the daily activity of adult dogs. Twenty-four dogs (18.0 ± 3.4 kg, 9 months-4 years old) of various mixed breeds were utilized in a randomized complete block design with treatments targeted at 0 and 2.5 mg (LOW) and at 5.0 mg (HIGH) CBD/kg body weight (BW) per day split between two treats administered after twice-daily exercise (0700-0900 and 1,700-1,900 h). Four hours each day [1,000-1,200 h (a.m.) and 1,330-1,530 h (p.m.)] were designated as times when no people entered the kennels, with 2 h designated as Quiet time and the other 2 h as Music time, when calming music played over speakers. Quiet and Music sessions were randomly allotted to daily a.m. or p.m. times. Activity monitors were fitted to dogs' collars for continuous collection of activity data. Data were collected over a 14-day baseline period to establish the activity patterns and block dogs by activity level (high or low) before randomly assigning dogs within each block to treatments. After 7 days of treatment acclimation, activity data were collected for 14 days. Data were examined for differences using the MIXED procedure in SAS including effects of treatment, day, session (Quiet or Music), time of day (a.m. or p.m.), and accompanying interactions. CBD (LOW and HIGH) did not alter the total daily activity points (P = 0.985) or activity duration (P = 0.882). CBD tended (P = 0.071) to reduce total daily scratching compared with the control. Dogs were more active in p.m. sessions than in a.m. sessions (P < 0.001). During the p.m. session, dogs receiving HIGH tended (P = 0.091) to be less active than the control (CON). During the a.m. and p.m. sessions, CBD reduced scratching compared with CON (P = 0.030). CBD did not affect the activity duration during exercise periods (P = 0.143). These results indicate that, when supplemented with up to 4.5 mg CBD/kg BW/day, CBD does not impact the daily activity of adult dogs, but may exert an antipruritic effect.
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Affiliation(s)
- Elizabeth M. Morris
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States
| | | | - Dawn M. Spangler
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN, United States
| | - Jessica Gebert
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN, United States
| | - Eric S. Vanzant
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States
| | - Kyle R. McLeod
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States
| | - David L. Harmon
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States
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22
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Epstein J, Dowling-Guyer S, McCobb E, Glotzer C, Dodman NH. Addressing stress in dogs in shelters through a novel visual and auditory enrichment device. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Amaya V, Descovich K, Paterson MBA, Phillips CJC. Effects of Music Pitch and Tempo on the Behaviour of Kennelled Dogs. Animals (Basel) 2020; 11:ani11010010. [PMID: 33374683 PMCID: PMC7822479 DOI: 10.3390/ani11010010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/19/2020] [Accepted: 12/21/2020] [Indexed: 12/29/2022] Open
Abstract
Simple Summary Domestic dogs often live in confined environments for different reasons. These environments can be challenging for some dogs and this can lead to high levels of stress and arousal, which could affect welfare. Auditory enrichment has been shown to reduce arousal-related behaviours in dogs, and the aim of this study was to investigate if these effects are induced by particular characteristics of music such as tempo and pitch. The behaviour of 10 kennelled dogs was monitored in response to music tracks played with different characteristics (high pitch, low pitch, fast tempo and slow tempo), as well as white noise and a control. Low pitch tracks seemed to prompt behavioural changes by increasing the level of alertness of the dogs, potentially due to the association between low frequency vocalisations with agonistic contexts, making them more vigilant of their surroundings. Abstract Confinement can be stressful for some dogs and this can lead to behavioural issues and poor welfare. A key component of the stress response is behavioural arousal, characterised by increased alertness and sensory sensitivity. This makes behavioural observations a useful tool to assess stress, as they provide insight into an animal’s internal state. Auditory enrichment has been shown to reduce arousal-related behaviour in dogs, but it is not clear if specific characteristics of a music track, such as tempo and/or pitch, produce these effects. The aim of this study was to compare behavioural responses of dogs to music tracks played with different characteristics (high pitch, low pitch, fast tempo, and slow tempo), as well as white noise and a control. Pitch and tempo modifications were applied to ten piano music songs and the six treatments (four different treatment-song combinations, white noise, and control) were presented daily, for ten minutes each, to ten dogs over ten days. Behavioural changes seemed to be driven by low-pitch tracks, which increased the level of alertness of the dogs. These findings could be related to the Morton’s motivations-structural rules: harsh, low frequency vocalisations signal aggressive motivations in mammals. Dogs may have perceived low-pitch tracks as more unsettling and were therefore more active and alert when listening to them.
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Affiliation(s)
- Veronica Amaya
- School of Veterinary Sciences, University of Queensland, White House Building (8134), Gatton Campus, Gatton, QLD 4343, Australia; (K.D.); (M.B.A.P.)
- Correspondence:
| | - Kris Descovich
- School of Veterinary Sciences, University of Queensland, White House Building (8134), Gatton Campus, Gatton, QLD 4343, Australia; (K.D.); (M.B.A.P.)
| | - Mandy B. A. Paterson
- School of Veterinary Sciences, University of Queensland, White House Building (8134), Gatton Campus, Gatton, QLD 4343, Australia; (K.D.); (M.B.A.P.)
- Royal Society for the Prevention of Cruelty to Animals, Queensland, Wacol, QLD 4076, Australia
| | - Clive J. C. Phillips
- Curtin University Sustainability Policy (CUSP) Institute, Curtin University, Perth, WA 6845, Australia;
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Luna D, Carrasco C, Álvarez D, González C, Egaña JI, Figueroa J. Exploring Anhedonia in Kennelled Dogs: Could Coping Styles Affect Hedonic Preferences for Sweet and Umami Flavours? Animals (Basel) 2020; 10:ani10112087. [PMID: 33187104 PMCID: PMC7696099 DOI: 10.3390/ani10112087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/25/2020] [Accepted: 11/09/2020] [Indexed: 11/24/2022] Open
Abstract
Simple Summary Kennelled dogs are susceptible to suffer chronic stress when social interactions with conspecifics and spatial needs are long-term restricted. Chronic stress may affect pleasure perception of food and solutions in dogs as observed in several animals, a phenomenon known as anhedonia. However, little information exists on how different coping styles could prevent the onset of anhedonia. Fourteen kennelled Beagle dogs were used to study the acceptability and preference for different dilute palatable sucrose and monosodium glutamate (MSG) solutions. Coping style of animals was previously evaluated through a modified human-approach test. This test consisted in assessing whether or not dogs approached an unfamiliar human when a feeding opportunity was presented, classifying them as close dogs (CD; proactive) or distant dogs (DD; reactive) respectively. It was observed that DD presented a lower intake of both sucrose and MSG dilute solutions compared with CD. Moreover, DD exhibited a higher consumption of MSG than CD at the highest concentrations, supporting that their intake depends on solution palatability. Finally, DD did not prefer sucrose or MSG solutions over water at any dilute solution offered. Together, these results suggest that dogs that are categorized as reactive animals could diminish their ability to perceive dilute palatable solutions reflecting depressive-like behaviours such as anhedonia. Abstract Kennelled dogs are at risk of suffering chronic stress due to long-term spatial, social and feeding restrictions. Chronic stress may decrease the dogs’ capacity to feel pleasure when facing hedonic experiences, modifying their perception for palatable ingredients. However, different abilities to cope with environmental stressors could prevent the onset of anhedonia. Fourteen kennelled Beagle dogs were used to study the acceptability and preference for different dilute sucrose and monosodium glutamate (MSG) solutions. Coping style of animals was previously evaluated through a human approach test (HAT) and classified as close dogs (CD; proactive) or distant dogs (DD; reactive) according to whether or not they approached an unfamiliar human when a feeding opportunity was presented. Consumption results were analysed taking into account the sucrose/MSG concentrations, HAT (CD or DD), age, and weight of the animals. DD presented a lower intake of sucrose (p = 0.041) and MSG (p = 0.069) solutions compared with CD. However, DD exhibited a higher consumption of MSG than CD at its highest concentrations, supporting that their intake depends on solution palatability. Finally, DD did not prefer sucrose or MSG solutions over water at any dilute solution offered. Together, these results suggest that dogs that are categorized as reactive animals could diminish their ability to perceive dilute palatable solutions, reflecting depressive-like behaviours as anhedonia.
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Affiliation(s)
- Daniela Luna
- Departamento de Ciencias Animales, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Macul, Santiago 7820436, Chile;
| | - Carolina Carrasco
- Departamento de Fomento de la Producción Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11735, La Pintana, Santiago 8820000, Chile; (C.C.); (D.Á.); (C.G.); (J.I.E.)
| | - Daniela Álvarez
- Departamento de Fomento de la Producción Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11735, La Pintana, Santiago 8820000, Chile; (C.C.); (D.Á.); (C.G.); (J.I.E.)
| | - Catalina González
- Departamento de Fomento de la Producción Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11735, La Pintana, Santiago 8820000, Chile; (C.C.); (D.Á.); (C.G.); (J.I.E.)
| | - Juan Ignacio Egaña
- Departamento de Fomento de la Producción Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11735, La Pintana, Santiago 8820000, Chile; (C.C.); (D.Á.); (C.G.); (J.I.E.)
| | - Jaime Figueroa
- Departamento de Ciencias Animales, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Macul, Santiago 7820436, Chile;
- Correspondence: ; Tel.: +56-223-544-092
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Effects of Olfactory and Auditory Enrichment on Heart Rate Variability in Shelter Dogs. Animals (Basel) 2020; 10:ani10081385. [PMID: 32785115 PMCID: PMC7460225 DOI: 10.3390/ani10081385] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 12/18/2022] Open
Abstract
Simple Summary Many pet dogs end up in shelters, and the unpredictable and overstimulating environment can lead to high arousal and stress levels. This may manifest in behavioural problems, and decreased welfare and adoption chances. Heart rate variability is a non-invasive method to measure autonomic nervous system activity, which plays an important role in the stress response. The sympathetic nervous system is responsible for increasing the dog’s arousal in response to stress and the parasympathetic nervous system is responsible for counteracting the arousal and calming the dog. Environmental enrichment can help dogs to be more relaxed, which is likely to be reflected by increased parasympathetic activity. Dogs’ heart rate variability responses to three enrichment methods capable of reducing stress—music, lavender and a calming pheromone produced by dogs, dog appeasing pheromone and a control condition (no stimuli applied) were compared. Exposure to music appeared to activate both branches of the autonomic nervous system, as dogs in that group had higher heart rate variability parameters reflecting both parasympathetic and sympathetic activity compared to the lavender and control groups. We conclude that music may be a useful type of enrichment to relieve both the stress and boredom in shelter environments. Abstract Animal shelters can be stressful environments and time in care may affect individual dogs in negative ways, so it is important to try to reduce stress and arousal levels to improve welfare and chance of adoption. A key element of the stress response is the activation of the autonomic nervous system (ANS), and a non-invasive tool to measure this activity is heart rate variability (HRV). Physiologically, stress and arousal result in the production of corticosteroids, increased heart rate and decreased HRV. Environmental enrichment can help to reduce arousal related behaviours in dogs and this study focused on sensory environmental enrichment using olfactory and auditory stimuli with shelter dogs. The aim was to determine if these stimuli have a physiological effect on dogs and if this could be detected through HRV. Sixty dogs were allocated to one of three stimuli groups: lavender, dog appeasing pheromone and music or a control group, and usable heart rate variability data were obtained from 34 dogs. Stimuli were applied for 3 h a day on five consecutive days, with HRV recorded for 4 h (treatment period + 1 h post-treatment) on the 5th and last day of exposure to the stimuli by a Polar® heart rate monitor attached to the dog’s chest. HRV results suggest that music activates both branches of the ANS, which may be useful to relieve both the stress and boredom in shelter environments.
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Amaya V, Paterson MBA, Phillips CJC. Effects of Olfactory and Auditory Enrichment on the Behaviour of Shelter Dogs. Animals (Basel) 2020; 10:E581. [PMID: 32235593 PMCID: PMC7222336 DOI: 10.3390/ani10040581] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 03/27/2020] [Accepted: 03/27/2020] [Indexed: 11/16/2022] Open
Abstract
Shelter environments are stressful for dogs, as they must cope with many stimuli over which they have little control. This can lead to behavioural changes, negatively affect their welfare and downgrade the human-animal bond, affecting re-homing success. Arousal is evident in their behaviour, particularly increased activity and frequent vocalisation. Environmental enrichment plays an important role in reducing arousal behaviour, either through direct physiological effects or by masking stressful stimuli. The present study focused on sensory environmental enrichment, using olfactory and auditory stimuli under shelter conditions. Sixty dogs were allocated to one of four treatments: three types of enrichment, Lavender, Dog appeasing pheromone (DAP) and Music, and a Control group. Stimuli were applied for 3 h/d on five consecutive days. Dogs exposed to DAP lay down more, and those exposed to Music lay down more with their head down, compared to the Control. Those in the Control stood more on their hind legs with their front legs on the exit door, compared to those exposed to Music and DAP, particularly if they had only been in the shelter for a short time. They also panted and vocalised much more than dogs in the three enrichment treatments, which tended to persist during the 4 h period post treatment, and in the case of vocalisation into the subsequent night. The study suggests that all three enrichments had some positive benefits for dogs in shelters, as well as being non-invasive and easy to apply in the shelter environment.
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Affiliation(s)
- Veronica Amaya
- Centre for Animal Welfare and Ethics, University of Queensland, White House Building (8134), Gatton Campus, Gatton, QLD 4343, Australia;
| | - Mandy B. A. Paterson
- Royal Society for the Prevention of Cruelty to Animals, Queensland, Brisbane, QLD 4076, Australia;
| | - Clive J. C. Phillips
- Centre for Animal Welfare and Ethics, University of Queensland, White House Building (8134), Gatton Campus, Gatton, QLD 4343, Australia;
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Aimé C, Le Covec M, Bovet D, Esseily R. La musicalité est-elle un héritage de notre histoire biologique ? ENFANCE 2020. [DOI: 10.3917/enf2.201.0041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Pandey M, Singh C, Goud ESK, Vedamurthy VG, Singh D, Onteru SK. Effect of Vedic music on steroidogenic gene expression in 3D-cultured buffalo granulosa cell spheroids model system, a pilot study. Reprod Domest Anim 2020; 56:231-238. [PMID: 32144832 DOI: 10.1111/rda.13671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/02/2020] [Indexed: 11/29/2022]
Abstract
Music is known for reducing stress, anxiety and depression, improving cognitive performance, and enhancing oestrogen levels. However, its effect on non-auditory mammalian cell system and the molecular events leading to higher oestrogen levels is less explored. Therefore, the present study targeted to know the direct effects of a peaceful Vedic music on 3D cultured buffalo granulosa cell spheroids. The spheroids were daily exposed to the Mahamrityunjaya mantra, a kind of Vedic chants, for 1.5 hr for 6 days. After 6 days, the music effect was analysed by the expression analysis of steroidogenic (CYP19A1, STAR and HSD17β1) and proliferative marker (PCNA) genes. Interestingly, the CYP19A1 gene expression was significantly upregulated by 3.464 ± 0.15 folds in the music exposed spheroids than the non-exposed spheroids. However, the expression of other steroidogenic and proliferative genes was unaltered. These observations provided a transcriptional clue for higher estradiol levels by the music and a scope to use Vedic chants for increasing the CYP19A1 expression to help tackle some pathophysiological conditions.
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Affiliation(s)
- Mamta Pandey
- Molecular Endocrinology, Functional Genomics and Systems Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Karnal, India
| | - Chhama Singh
- Molecular Endocrinology, Functional Genomics and Systems Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Karnal, India
| | - Emmagouni Sharath K Goud
- Molecular Endocrinology, Functional Genomics and Systems Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Karnal, India
| | - Veerappa G Vedamurthy
- Molecular Endocrinology, Functional Genomics and Systems Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Karnal, India
| | - Dheer Singh
- Molecular Endocrinology, Functional Genomics and Systems Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Karnal, India
| | - Suneel Kumar Onteru
- Molecular Endocrinology, Functional Genomics and Systems Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Karnal, India
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McDonald CI, Zaki S. A role for classical music in veterinary practice: does exposure to classical music reduce stress in hospitalised dogs? Aust Vet J 2020; 98:31-36. [DOI: 10.1111/avj.12905] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/21/2019] [Accepted: 11/29/2019] [Indexed: 11/27/2022]
Affiliation(s)
- CI McDonald
- Sydney School of Veterinary Science, Faculty of ScienceThe University of Sydney Camperdown New South Wales 2006 Australia
| | - S Zaki
- Sydney School of Veterinary Science, Faculty of ScienceThe University of Sydney Camperdown New South Wales 2006 Australia
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Musical Dogs: A Review of the Influence of Auditory Enrichment on Canine Health and Behavior. Animals (Basel) 2020; 10:ani10010127. [PMID: 31941064 PMCID: PMC7022433 DOI: 10.3390/ani10010127] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/20/2019] [Accepted: 01/08/2020] [Indexed: 12/30/2022] Open
Abstract
Simple Summary Interest in the use of music therapy as a behavioral enrichment tool in veterinary medicine is growing. Indeed, an industry has formed around the development of ‘dog music’, which has been purposely designed to relax dogs. Despite enthusiastic uptake of the idea, there is little empirical evidence supporting the design of such tools. This article summarizes the scientific literature in this emerging domain. It notes that, as a general observation, animals appear less stressed or anxious when exposed to classical music than to control conditions. It also acknowledges that this field is relatively under-researched, and more rigorous studies must be conducted before species-specific recommendations can be made. Such studies must reflect individuals’ and species’ preferences for different genres and songs, taking care to avoid habituation. Abstract Music therapy yields many positive health outcomes in humans, but the effects of music on the health and welfare of nonhuman animals vary greatly with the type of music played, the ethology of the species, and the personality and learning history of individual animals. One context in which music therapy may be used to enhance animal welfare is to alleviate stress in domestic environments. Here, we review studies of the effects of music exposure on dogs as a case study for the implementation of music therapy in veterinary medicine. Nine reports of experimental testing for the therapeutic effects of music on dogs were found, with most of these studies focusing on changes in behavior. Overall, exposure to classical music appears to have a calming influence on dogs in stressful environments, with no additional benefit observed from any music purposely designed for dogs (specifically “Through a dog’s ear”). Given the cost effectiveness and ease of implementation, music therapy holds promise in veterinary medicine and animal welfare. However, to address precise research questions, further studies must use clearly defined characteristics of stimulus music in the experimental design, and consider the variability of each individual animal’s physical characteristics and past experience in the selection of candidates.
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Perry PJ, Scarlett JM, Houpt KA, Erb HN. A comparison of four environmental enrichments on adoptability of shelter dogs. J Vet Behav 2020. [DOI: 10.1016/j.jveb.2019.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Music or other background sounds are often played in barns as environmental enrichment for animals on farms or to mask sudden disruptive noises. Previous studies looking at the effects of this practice on non-human animal well-being and productivity have found contradictory results. However, there is still a lack of discussion on whether piglets have the ability to distinguish different types of music. In this study, we exposed piglets to different music conditions to investigate whether the piglets preferred certain music types, in which case those types would have the potential to be used as environmental enrichment. In total, 30 piglets were tested for music type preference to determine whether growing pigs respond differently to different types of music. We used music from two families of instruments (S: string, W: wind) and with two tempos (S: slow, 65 beats/min (bpm); F: fast, 200 bpm), providing four music-type combinations (SS: string-slow; SF: string-fast; WS: wind-slow; WF: wind-fast). The piglets were given a choice between two chambers, one with no music and the other with one of the four types of music, and their behaviour was observed. The results showed that SS and WF music significantly increased residence time (P<0.01) compared with the other music conditions. Compared with the control group (with no music), the different music conditions led to different behavioural responses, where SS music significantly increased lying (P<0.01) and exploration behaviour (P<0.01); SF music significantly increased tail-wagging behaviour (P<0.01); WS music significantly increased exploration (P<0.01); and WF music significantly increased walking, lying, standing and exploration (all P<0.01). The results also showed that musical instruments and tempo had little effect on most of the behaviours. Fast-tempo music significantly increased walking (P=0.02), standing (P<0.01) and tail wagging (P=0.04) compared with slow-tempo music. In conclusion, the results of this experiment show that piglets are more sensitive to tempo than to musical instruments in their response to musical stimulation and seem to prefer SS and WF music to the other two types. The results also suggest a need for further research on the effect of music types on animals.
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Hampton A, Ford A, Cox RE, Liu CC, Koh R. Effects of music on behavior and physiological stress response of domestic cats in a veterinary clinic. J Feline Med Surg 2019; 22:122-128. [DOI: 10.1177/1098612x19828131] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Objectives Our objective was to determine if feline-specific music played in a veterinary clinical setting would promote lower cat stress scores (CSSs), lower mean handling scale scores (HSs) and reduced neutrophil:lymphocyte ratios (NLRs) in cats during physical examinations. Methods Cats were exposed to one of three auditory stimuli tests – silence, classical music and cat-specific music – during three physical examinations 2 weeks apart. CSSs were recorded at pre- and post-auditory tests and during the examination period. The HSs were recorded at the physical examination period. The physiological stress was assessed via NLRs. Results The pre-auditory test showed no difference in CSS between cats listening to silence, classical music and cat music. CSSs for post-auditory tests and examination periods were not significantly different between silence and classical music; however, CSSs were significantly decreased in cats listening to cat music vs silence and in cats listening to cat music vs classical music. HSs were not different in cats listening to silence vs classical music, but were significantly lower in cats listening to cat music vs silence and classical music. No difference was found in NLRs among all three auditory stimuli tests. Conclusions and relevance Listening to cat-specific music prior to, and during, physical examination was associated with lower CSSs and lower HSs in cats, but had no effect on the physiological stress responses measured by NLRs. We conclude that cat-specific music may benefit cats by decreasing the stress levels and increasing the quality of care in veterinary clinical settings.
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Affiliation(s)
- Amanda Hampton
- School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Alexandra Ford
- School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Roy E Cox
- School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Chin-chi Liu
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Ronald Koh
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
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Use of behavioural and physiological responses for scoring sound sensitivity in dogs. PLoS One 2018; 13:e0200618. [PMID: 30067767 PMCID: PMC6070191 DOI: 10.1371/journal.pone.0200618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 06/29/2018] [Indexed: 11/19/2022] Open
Abstract
Sound sensitive dogs have exaggerated responses to sound stimuli that can negatively impact the welfare of the dog. Behavioural reactions combined with the response to sound involve a marked autonomic imbalance towards sympathetic predominance and release of cortisol. The purpose of the present study was to evaluate, in the laboratory, the cardiac autonomic modulation using heart rate variability (HRV) analysis, serum cortisol levels and behavioural parameters in response to sounds of fireworks in dogs with a history of sensitivity to fireworks. Based on these data, and combining qualitative measures and categorical measures, we propose one short and one full index of sound sensitivity in dogs. Six privately owned dogs with no history and another twelve dogs with a history of sound sensitivity to fireworks were used. The sound stimulus consisted of a standardised recording of fireworks (180-seconds long) with a peak intensity of 103–104 dB. The cardiac intervals were recorded using a frequency meter (Polar® RS800CX model) to evaluate the HRV, and the acquired data were processed using CardioSeries 2.4.1 software. Twenty-one behavioural parameters were analysed quantitatively by time, frequency or categorically by scores and were grouped in behavioural categories of arousal, fear, relaxation and “other”. Sound sensitive dogs had exacerbated autonomic responses to the sound stimulus in the laboratory compared to non-sensitive dogs, with higher LF/HF ratios suggesting autonomic imbalance towards sympathetic predominance, but the cortisol levels were similar between the sensitive and non-sensitive dogs. Sound sensitive dogs showed pronounced responses for the parameters: alert and attention, search sound, startle, trembling, hiding, run away and less intense responses for the parameters rest and wink/sleep. Furthermore, the behavioural categories of arousal, fear, relaxation (lack of) and LF/HF were correlated to the caregiver’s perception of the sound sensitivity of the dogs. Not only the short index for sound sensitivity (behavioural categories arousal, fear and relaxation, and LF/HF ratio) but also the full index for sound sensitivity (all behavioural categories, LF/HF and cortisol levels) was highly correlated to sound fear response at home. These indexes can contribute to the development of strategies to treat sound sensitive dogs.
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Banning AS. Music: The Ultimate Nonpharmacotherapeutic? J Physician Assist Educ 2017; 28:119-121. [PMID: 28471936 DOI: 10.1097/jpa.0000000000000122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Adrian S Banning
- Adrian S. Banning, MMS, PA-C, is an assistant clinical professor in the Physician Assistant Department, College of Nursing and Health Professions, at the Drexel University, Philadelphia, Pennsylvania
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