Analyze Diet
Physiology & behavior2007; 92(3); 293-316; doi: 10.1016/j.physbeh.2007.01.007

Heart rate variability as a measure of autonomic regulation of cardiac activity for assessing stress and welfare in farm animals — a review.

Abstract: Measurement of heart rate variability (HRV) is a non-invasive technique that can be used to investigate the functioning of the autonomic nervous system, especially the balance between sympathetic and vagal activity. It has been proven to be very useful in humans for both research and clinical studies concerned with cardiovascular diseases, diabetic autonomic dysfunction, hypertension and psychiatric and psychological disorders. Over the past decade, HRV has been used increasingly in animal research to analyse changes in sympathovagal balance related to diseases, psychological and environmental stressors or individual characteristics such as temperament and coping strategies. This paper discusses current and past HRV research in farm animals. First, it describes how cardiac activity is regulated and the relationships between HRV, sympathovagal balance and stress and animal welfare. Then it proceeds to outline the types of equipment and methodological approaches that have been adapted and developed to measure inter-beats intervals (IBI) and estimate HRV in farm animals. Finally, it discusses experiments and conclusions derived from the measurement of HRV in pigs, cattle, horses, sheep, goats and poultry. Emphasis has been placed on deriving recommendations for future research investigating HRV, including approaches for measuring and analysing IBI data. Data from earlier research demonstrate that HRV is a promising approach for evaluating stress and emotional states in animals. It has the potential to contribute much to our understanding and assessment of the underlying neurophysiological processes of stress responses and different welfare states in farm animals.
Publication Date: 2007-01-20 PubMed ID: 17320122DOI: 10.1016/j.physbeh.2007.01.007Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
  • Journal Article
  • Review

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article explores the effectiveness of using heart rate variability (HRV) as a measure of stress and welfare in farm animals.

Regulation of Cardiac Activity

  • The study kicks off by elaborating the regulation of cardiac activity. The autonomic nervous system, consisting of sympathetic and vagal activity, is responsible for controlling the heart rate. The sympathetic nervous system accelerates heart rate while the vagal (part of the parasympathetic nervous system) slows it down.

HRV and Sympathovagal Balance

  • The paper further elaborates on the link between HRV, sympathovagal balance, and stress. The balance between the two nervous systems fluctuates in response to different physiological and psychological states, thus changing the heart rate variability.
  • The changes in HRV can signify stress and hence the overall welfare of the farm animals.

Measurement Techniques

  • The research explores the diverse range of equipment and methodologies used tomeasure inter-beat intervals (IBI) and calculate HRV in farm animals.

HRV Measurement in Various Animals

  • The paper provides a detailed discussion of various experiments and conclusions derived from measuring HRV in pigs, cattle, horses, sheep, goats, and poultry.

Recommendations and Findings

  • Researchers underline the need for a standardized approach in measuring and analyzing IBI data.
  • The research concludes that HRV is a promising way to measure and analyze stress and emotional states in animals.
  • It suggests that HRV can greatly improve understanding and assessment of neurophysiological processes related to stress responses and welfare states in farm animals.

Cite This Article

APA
von Borell E, Langbein J, Després G, Hansen S, Leterrier C, Marchant J, Marchant-Forde R, Minero M, Mohr E, Prunier A, Valance D, Veissier I. (2007). Heart rate variability as a measure of autonomic regulation of cardiac activity for assessing stress and welfare in farm animals — a review. Physiol Behav, 92(3), 293-316. https://doi.org/10.1016/j.physbeh.2007.01.007

Publication

ISSN: 0031-9384
NlmUniqueID: 0151504
Country: United States
Language: English
Volume: 92
Issue: 3
Pages: 293-316

Researcher Affiliations

von Borell, Eberhard
  • Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, 06108 Halle, Germany. eberhard.vonborell@landw.uni-halle.de
Langbein, Jan
    Després, Gérard
      Hansen, Sven
        Leterrier, Christine
          Marchant, Jeremy
            Marchant-Forde, Ruth
              Minero, Michela
                Mohr, Elmar
                  Prunier, Armelle
                    Valance, Dorothée
                      Veissier, Isabelle

                        MeSH Terms

                        • Animal Welfare
                        • Animals
                        • Animals, Domestic / physiology
                        • Autonomic Nervous System / physiopathology
                        • Heart Rate / physiology
                        • Stress, Psychological / diagnosis
                        • Stress, Psychological / physiopathology

                        Citations

                        This article has been cited 182 times.
                        1. Cohen S, Ho C. Review of Rat (Rattus norvegicus), Mouse (Mus musculus), Guinea pig (Cavia porcellus), and Rabbit (Oryctolagus cuniculus) Indicators for Welfare Assessment.. Animals (Basel) 2023 Jun 30;13(13).
                          doi: 10.3390/ani13132167pubmed: 37443965google scholar: lookup
                        2. Koenneker K, Schulze M, Pieper L, Jung M, Schmicke M, Beyer F. Comparative Assessment of the Stress Response of Cattle to Common Dairy Management Practices.. Animals (Basel) 2023 Jun 26;13(13).
                          doi: 10.3390/ani13132115pubmed: 37443913google scholar: lookup
                        3. Hole C, Murray R, Marlin D, Freeman P. Equine Behavioural and Physiological Responses to Auditory Stimuli in the Presence and Absence of Noise-Damping Ear Covers.. Animals (Basel) 2023 May 8;13(9).
                          doi: 10.3390/ani13091574pubmed: 37174609google scholar: lookup
                        4. Seganfreddo S, Fornasiero D, De Santis M, Mutinelli F, Normando S, Contalbrigo L. A Pilot Study on Behavioural and Physiological Indicators of Emotions in Donkeys.. Animals (Basel) 2023 Apr 25;13(9).
                          doi: 10.3390/ani13091466pubmed: 37174503google scholar: lookup
                        5. Sommer DM, Young JM, Sun X, López-Martínez G, Byrd CJ. Are infrared thermography, feeding behavior, and heart rate variability measures capable of characterizing group-housed sow social hierarchies?. J Anim Sci 2023 Jan 3;101.
                          doi: 10.1093/jas/skad143pubmed: 37158284google scholar: lookup
                        6. Silva FG, Conceição C, Pereira AMF, Cerqueira JL, Silva SR. Literature Review on Technological Applications to Monitor and Evaluate Calves' Health and Welfare.. Animals (Basel) 2023 Mar 24;13(7).
                          doi: 10.3390/ani13071148pubmed: 37048404google scholar: lookup
                        7. Felici M, Sgorbini M, Baragli P, Lanatà A, Marmorini P, Camillo F. Autonomic nervous system balance in parturient mares: Spontaneous vs induced delivery.. PLoS One 2023;18(3):e0283116.
                          doi: 10.1371/journal.pone.0283116pubmed: 36930584google scholar: lookup
                        8. Kappel S, Ramirez Montes De Oca MA, Collins S, Herborn K, Mendl M, Fureix C. Do you see what I see? Testing horses' ability to recognise real-life objects from 2D computer projections.. Anim Cogn 2023 Jul;26(4):1147-1159.
                          doi: 10.1007/s10071-023-01761-6pubmed: 36864246google scholar: lookup
                        9. De Santis M, Seganfreddo S, Greco A, Normando S, Benedetti D, Mutinelli F, Contalbrigo L. Donkey Heart Rate and Heart Rate Variability: A Scoping Review.. Animals (Basel) 2023 Jan 25;13(3).
                          doi: 10.3390/ani13030408pubmed: 36766295google scholar: lookup
                        10. Sanmiguel RA, Dedousi A, López JD, Sierra DA, Sossidou EN. Effects of feeds, supplemented with humic substances and calcium carbonate, on performance, egg quality and heart rate variability in laying hens.. Vet Res Forum 2022;13(4):461-467.
                          doi: 10.30466/vrf.2022.533902.3210pubmed: 36686871google scholar: lookup
                        11. Tiemann I, Fijn LB, Bagaria M, Langen EMA, van der Staay FJ, Arndt SS, Leenaars C, Goerlich VC. Glucocorticoids in relation to behavior, morphology, and physiology as proxy indicators for the assessment of animal welfare. A systematic mapping review.. Front Vet Sci 2022;9:954607.
                          doi: 10.3389/fvets.2022.954607pubmed: 36686168google scholar: lookup
                        12. Golzari K, Kong Y, Reed SA, Posada-Quintero HF. Sympathetic Arousal Detection in Horses Using Electrodermal Activity.. Animals (Basel) 2023 Jan 7;13(2).
                          doi: 10.3390/ani13020229pubmed: 36670768google scholar: lookup
                        13. Kapteijn CM, Frippiat T, van Beckhoven C, van Lith HA, Endenburg N, Vermetten E, Rodenburg TB. Measuring heart rate variability using a heart rate monitor in horses (Equus caballus) during groundwork.. Front Vet Sci 2022;9:939534.
                          doi: 10.3389/fvets.2022.939534pubmed: 36483490google scholar: lookup
                        14. Turini L, Bonelli F, Lanatà A, Vitale V, Nocera I, Sgorbini M, Mele M. Validation of a new smart textiles biotechnology for heart rate variability monitoring in sheep.. Front Vet Sci 2022;9:1018213.
                          doi: 10.3389/fvets.2022.1018213pubmed: 36483489google scholar: lookup
                        15. Lv Y, Wu J, Xu Y, Pu S, Li C, Du D. Musical therapy attenuates neuroma pain by modifying leptin expression.. BMC Complement Med Ther 2022 Dec 1;22(1):316.
                          doi: 10.1186/s12906-022-03795-8pubmed: 36456983google scholar: lookup
                        16. Janicka W, Wilk I, Próchniak T, Janczarek I. Can Sound Alone Act as a Virtual Barrier for Horses? A Preliminary Study.. Animals (Basel) 2022 Nov 15;12(22).
                          doi: 10.3390/ani12223151pubmed: 36428379google scholar: lookup
                        17. Matsushita S, Nagasawa M, Kikusui T. Autonomic nervous system responses of dogs to human-dog interaction videos.. PLoS One 2022;17(11):e0257788.
                          doi: 10.1371/journal.pone.0257788pubmed: 36327316google scholar: lookup
                        18. Söbbeler FJ, Wendt S, Briese A, Tünsmeier J, Waldmann KH, Kästner SBR, von Altrock A. Comparative Study of Pain-Related Responses of Male Piglets up to Seven Days of Age to the Application of Different Local Anaesthetics and Subsequent Castration.. Animals (Basel) 2022 Oct 19;12(20).
                          doi: 10.3390/ani12202833pubmed: 36290223google scholar: lookup
                        19. Hamlaoui A, Keeling L, Burman O, Verbeek E. Investigating attentional scope as a novel indicator of emotional state in animals.. Sci Rep 2022 Oct 19;12(1):17452.
                          doi: 10.1038/s41598-022-21151-1pubmed: 36261480google scholar: lookup
                        20. Onanga M, Joanny S, Rivals I, Perger E, Arnulf I, Redolfi S, Sevoz-Couche C. Screening of obstructive sleep apnea syndrome by the deep breathing technique.. J Clin Sleep Med 2023 Feb 1;19(2):293-302.
                          doi: 10.5664/jcsm.10314pubmed: 36148620google scholar: lookup
                        21. Nielsen SS, Alvarez J, Bicout DJ, Calistri P, Canali E, Drewe JA, Garin-Bastuji B, Gonzales Rojas JL, Schmidt CG, Michel V, Miranda Chueca MÁ, Padalino B, Pasquali P, Roberts HC, Spoolder H, Stahl K, Velarde A, Viltrop A, Winckler C, Earley B, Edwards S, Faucitano L, Marti S, de La Lama GCM, Costa LN, Thomsen PT, Ashe S, Mur L, Van der Stede Y, Herskin M. Welfare of pigs during transport.. EFSA J 2022 Sep;20(9):e07445.
                          doi: 10.2903/j.efsa.2022.7445pubmed: 36092763google scholar: lookup
                        22. Nielsen SS, Alvarez J, Bicout DJ, Calistri P, Canali E, Drewe JA, Garin-Bastuji B, Gonzales Rojas JL, Gortázar Schmidt C, Michel V, Miranda Chueca MÁ, Padalino B, Pasquali P, Roberts HC, Spoolder H, Stahl K, Velarde A, Viltrop A, Winckler C, Earley B, Edwards S, Faucitano L, Marti S, Miranda de La Lama GC, Costa LN, Thomsen PT, Ashe S, Mur L, Van der Stede Y, Herskin M. Welfare of equidae during transport.. EFSA J 2022 Sep;20(9):e07444.
                          doi: 10.2903/j.efsa.2022.7444pubmed: 36092762google scholar: lookup
                        23. Wiśniewska A, Janczarek I, Tkaczyk E, Wilk I, Janicka W, Próchniak T, Kaczmarek B, Pokora E, Łuszczyński J. Minimizing the Effects of Social Isolation of Horses by Contact with Animals of a Different Species: The Domestic Goat as an Example.. Animals (Basel) 2022 Sep 2;12(17).
                          doi: 10.3390/ani12172271pubmed: 36077991google scholar: lookup
                        24. Wascher CAF, Arnold W, Kotrschal K. Effects of severe anthropogenic disturbance on the heart rate and body temperature in free-living greylag geese (Anser anser).. Conserv Physiol 2022;10(1):coac050.
                          doi: 10.1093/conphys/coac050pubmed: 36033970google scholar: lookup
                        25. Zigmantaitė V, Jonušaitė E, Grigalevičiūtė R, Kučinskas A, Treinys R, Navalinskas A, Žvikas V, Jakštas V, Pudžiuvelytė L, Bernatonienė J, Mačianskienė R, Jurevičius J. Evaluation of the Cardiac Electrophysiological and Haemodynamic Effects of Elsholtzia ciliata Essential Oil on Swine.. Pharmaceuticals (Basel) 2022 Aug 10;15(8).
                          doi: 10.3390/ph15080982pubmed: 36015131google scholar: lookup
                        26. Mektrirat R, Rueangsri T, Keeratichandacha W, Soonsawat S, Boonyapakorn C, Pongkan W. Polyunsaturated Fatty Acid EAB-277(®) Supplementation Improved Heart Rate Variability and Clinical Signs in Tracheal Collapse Dogs.. Front Vet Sci 2022;9:880952.
                          doi: 10.3389/fvets.2022.880952pubmed: 35909680google scholar: lookup
                        27. Grigg EK, Liu S, Dempsey DG, Wong K, Bain M, Sollers JJ, Haddock R, Kogan LR, Barnhard JA, Tringali AA, Thigpen AP, Hart LA. Assessing the Relationship Between Emotional States of Dogs and Their Human Handlers, Using Simultaneous Behavioral and Cardiac Measures.. Front Vet Sci 2022;9:897287.
                          doi: 10.3389/fvets.2022.897287pubmed: 35898554google scholar: lookup
                        28. Castillo G, Gaitero L, Fonfara S, Czura CJ, Monteith G, James F. Transcutaneous Cervical Vagus Nerve Stimulation Induces Changes in the Electroencephalogram and Heart Rate Variability of Healthy Dogs, a Pilot Study.. Front Vet Sci 2022;9:878962.
                          doi: 10.3389/fvets.2022.878962pubmed: 35769324google scholar: lookup
                        29. Diel F, Rauch E, Palme R, Sauter-Louis C, Zeiler E. Exploring the Evacuation of Dairy Cattle at Night in Collaboration with the Fire Brigade: How to Prepare Openings for Swift Rescue in Case of Barn Fire.. Animals (Basel) 2022 May 25;12(11).
                          doi: 10.3390/ani12111344pubmed: 35681808google scholar: lookup
                        30. 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 May 24;12(11).
                          doi: 10.3390/ani12111338pubmed: 35681804google scholar: lookup
                        31. Johnston CH, Whittaker AL, Franklin SH, Hutchinson MR. The Neuroimmune Interface and Chronic Pain Through the Lens of Production Animals.. Front Neurosci 2022;16:887042.
                          doi: 10.3389/fnins.2022.887042pubmed: 35663552google scholar: lookup
                        32. Riva MG, Dai F, Huhtinen M, Minero M, Barbieri S, Dalla Costa E. The Impact of Noise Anxiety on Behavior and Welfare of Horses from UK and US Owner's Perspective.. Animals (Basel) 2022 May 21;12(10).
                          doi: 10.3390/ani12101319pubmed: 35625165google scholar: lookup
                        33. Parois SP, Van Der Zande LE, Knol EF, Kemp B, Rodenburg TB, Bolhuis JE. Effects of a Multi-Suckling System Combined With Enriched Housing Post-Weaning on Response and Cognitive Resilience to Isolation.. Front Vet Sci 2022;9:868149.
                          doi: 10.3389/fvets.2022.868149pubmed: 35478601google scholar: lookup
                        34. Jardat P, Calandreau L, Ferreira V, Gouyet C, Parias C, Reigner F, Lansade L. Pet-directed speech improves horses' attention toward humans.. Sci Rep 2022 Mar 11;12(1):4297.
                          doi: 10.1038/s41598-022-08109-zpubmed: 35277552google scholar: lookup
                        35. Menchetti L, Iaboni M, Santoro MM, Guelfi G, Diverio S. How Do Avalanche Dogs (and Their Handlers) Cope with Physical Exercise? Heart Rate Changes during Endurance in a Snowy Environment.. Animals (Basel) 2022 Jan 11;12(2).
                          doi: 10.3390/ani12020168pubmed: 35049791google scholar: lookup
                        36. Hernández-Avalos I, Mota-Rojas D, Mendoza-Flores JE, Casas-Alvarado A, Flores-Padilla K, Miranda-Cortes AE, Torres-Bernal F, Gómez-Prado J, Mora-Medina P. Nociceptive pain and anxiety in equines: Physiological and behavioral alterations.. Vet World 2021 Nov;14(11):2984-2995.
                        37. Rørvang MV, Ničová K, Sassner H, Nawroth C. Horses' (Equus caballus) Ability to Solve Visible but Not Invisible Displacement Tasks Is Associated With Frustration Behavior and Heart Rate.. Front Behav Neurosci 2021;15:792035.
                          doi: 10.3389/fnbeh.2021.792035pubmed: 34955782google scholar: lookup
                        38. Nyerges-Bohák Z, Nagy K, Rózsa L, Póti P, Kovács L. Heart rate variability before and after 14 weeks of training in Thoroughbred horses and Standardbred trotters with different training experience.. PLoS One 2021;16(12):e0259933.
                          doi: 10.1371/journal.pone.0259933pubmed: 34882704google scholar: lookup
                        39. Minnig A, Zufferey R, Thomann B, Zwygart S, Keil N, Schüpbach-Regula G, Miserez R, Stucki D, Zanolari P. Animal-Based Indicators for On-Farm Welfare Assessment in Goats.. Animals (Basel) 2021 Nov 2;11(11).
                          doi: 10.3390/ani11113138pubmed: 34827870google scholar: lookup
                        40. Wiśniewska A, Janczarek I, Wilk I, Tkaczyk E, Mierzicka M, Stanley CR, Górecka-Bruzda A. Heterospecific Fear and Avoidance Behaviour in Domestic Horses (Equus caballus).. Animals (Basel) 2021 Oct 28;11(11).
                          doi: 10.3390/ani11113081pubmed: 34827813google scholar: lookup
                        41. Grigg EK, Ueda Y, Walker AL, Hart LA, Simas S, Stern JA. Comparative Assessment of Heart Rate Variability Obtained via Ambulatory ECG and Polar Heart Rate Monitors in Healthy Cats: A Pilot Study.. Front Vet Sci 2021;8:741583.
                          doi: 10.3389/fvets.2021.741583pubmed: 34820436google scholar: lookup
                        42. Wang YC, Wang CC, Yao YH, Wu WT. Identification of a High-Risk Group of New-Onset Cardiovascular Disease in Occupational Drivers by Analyzing Heart Rate Variability.. Int J Environ Res Public Health 2021 Oct 31;18(21).
                          doi: 10.3390/ijerph182111486pubmed: 34770003google scholar: lookup
                        43. Fuentes S, Gonzalez Viejo C, Tongson E, Lipovetzky N, Dunshea FR. Biometric Physiological Responses from Dairy Cows Measured by Visible Remote Sensing Are Good Predictors of Milk Productivity and Quality through Artificial Intelligence.. Sensors (Basel) 2021 Oct 14;21(20).
                          doi: 10.3390/s21206844pubmed: 34696059google scholar: lookup
                        44. Baldwin AL, Rector BK, Alden AC. Physiological and Behavioral Benefits for People and Horses during Guided Interactions at an Assisted Living Residence.. Behav Sci (Basel) 2021 Sep 23;11(10).
                          doi: 10.3390/bs11100129pubmed: 34677222google scholar: lookup
                        45. Bergamasco L, Edwards-Callaway LN, Bello NM, Mijares SH, Cull CA, Rugan S, Mosher RA, Gehring R, Coetzee JF. Unmitigated Surgical Castration in Calves of Different Ages: Cortisol Concentrations, Heart Rate Variability, and Infrared Thermography Findings.. Animals (Basel) 2021 Sep 17;11(9).
                          doi: 10.3390/ani11092719pubmed: 34573687google scholar: lookup
                        46. Neethirajan S. The Use of Artificial Intelligence in Assessing Affective States in Livestock.. Front Vet Sci 2021;8:715261.
                          doi: 10.3389/fvets.2021.715261pubmed: 34409091google scholar: lookup
                        47. Luna D, González C, Byrd CJ, Palomo R, Huenul E, Figueroa J. The Effect of Demonstrator Social Rank on the Attentiveness and Motivation of Pigs to Positively Interact with Their Human Caretakers.. Animals (Basel) 2021 Jul 20;11(7).
                          doi: 10.3390/ani11072140pubmed: 34359267google scholar: lookup
                        48. Lee KE, Kim JG, Lee H, Kim BS. Behavioral and cardiac responses in mature horses exposed to a novel object.. J Anim Sci Technol 2021 May;63(3):651-661.
                          doi: 10.5187/jast.2021.e51pubmed: 34189512google scholar: lookup
                        49. Wascher CAF. Heart rate as a measure of emotional arousal in evolutionary biology.. Philos Trans R Soc Lond B Biol Sci 2021 Aug 16;376(1831):20200479.
                          doi: 10.1098/rstb.2020.0479pubmed: 34176323google scholar: lookup
                        50. Kitajima K, Oishi K, Miwa M, Anzai H, Setoguchi A, Yasunaka Y, Himeno Y, Kumagai H, Hirooka H. Effects of Heat Stress on Heart Rate Variability in Free-Moving Sheep and Goats Assessed With Correction for Physical Activity.. Front Vet Sci 2021;8:658763.
                          doi: 10.3389/fvets.2021.658763pubmed: 34141733google scholar: lookup
                        51. Twiss SD, Brannan N, Shuert CR, Bishop AM, Pomeroy PP, Moss S. An external telemetry system for recording resting heart rate variability and heart rate in free-ranging large wild mammals.. PLoS One 2021;16(6):e0252013.
                          doi: 10.1371/journal.pone.0252013pubmed: 34086713google scholar: lookup
                        52. Contalbrigo L, Borgi M, De Santis M, Collacchi B, Tuozzi A, Toson M, Redaelli V, Odore R, Vercelli C, Stefani A, Luzi F, Valle E, Cirulli F. Equine-Assisted Interventions (EAIs) for Children with Autism Spectrum Disorders (ASD): Behavioural and Physiological Indices of Stress in Domestic Horses (Equus caballus) during Riding Sessions.. Animals (Basel) 2021 May 27;11(6).
                          doi: 10.3390/ani11061562pubmed: 34071859google scholar: lookup
                        53. Tschoner T. Methods for Pain Assessment in Calves and Their Use for the Evaluation of Pain during Different Procedures-A Review.. Animals (Basel) 2021 Apr 25;11(5).
                          doi: 10.3390/ani11051235pubmed: 33922942google scholar: lookup
                        54. Janczarek I, Stachurska A, Wilk I, Wiśniewska A, Różańska-Boczula M, Kaczmarek B, Łuszczyński J, Kędzierski W. Horse Preferences for Insolation, Shade or Mist Curtain in the Paddock under Heat Conditions: Cardiac and Behavioural Response Analysis.. Animals (Basel) 2021 Mar 25;11(4).
                          doi: 10.3390/ani11040933pubmed: 33805989google scholar: lookup
                        55. Lee C, Campbell DLM. A Multi-Disciplinary Approach to Assess the Welfare Impacts of a New Virtual Fencing Technology.. Front Vet Sci 2021;8:637709.
                          doi: 10.3389/fvets.2021.637709pubmed: 33708813google scholar: lookup
                        56. Wang M, Youssef A, Larsen M, Rault JL, Berckmans D, Marchant-Forde JN, Hartung J, Bleich A, Lu M, Norton T. Contactless Video-Based Heart Rate Monitoring of a Resting and an Anesthetized Pig.. Animals (Basel) 2021 Feb 8;11(2).
                          doi: 10.3390/ani11020442pubmed: 33567778google scholar: lookup
                        57. Tuozzi A, Arhant C, Anderle K, Backes J, Cords C, Magierski V, Rault JL, Windschnurer I. Effects of Human Presence and Voice on the Behaviour of Shelter Dogs and Cats: A Preliminary Study.. Animals (Basel) 2021 Feb 5;11(2).
                          doi: 10.3390/ani11020406pubmed: 33562735google scholar: lookup
                        58. Luna D, González C, Byrd CJ, Palomo R, Huenul E, Figueroa J. Do Domestic Pigs Acquire a Positive Perception of Humans through Observational Social Learning?. Animals (Basel) 2021 Jan 8;11(1).
                          doi: 10.3390/ani11010127pubmed: 33430048google scholar: lookup
                        59. Scopa C, Greco A, Contalbrigo L, Fratini E, Lanatà A, Scilingo EP, Baragli P. Inside the Interaction: Contact With Familiar Humans Modulates Heart Rate Variability in Horses.. Front Vet Sci 2020;7:582759.
                          doi: 10.3389/fvets.2020.582759pubmed: 33330706google scholar: lookup
                        60. Jean-Joseph H, Kortekaas K, Range F, Kotrschal K. Context-Specific Arousal During Resting in Wolves and Dogs: Effects of Domestication?. Front Psychol 2020;11:568199.
                          doi: 10.3389/fpsyg.2020.568199pubmed: 33329204google scholar: lookup
                        61. Leliveld LMC, Düpjan S, Tuchscherer A, Puppe B. Hemispheric Specialization for Processing the Communicative and Emotional Content of Vocal Communication in a Social Mammal, the Domestic Pig.. Front Behav Neurosci 2020;14:596758.
                          doi: 10.3389/fnbeh.2020.596758pubmed: 33328923google scholar: lookup
                        62. Mott RO, Hawthorne SJ, McBride SD. Blink rate as a measure of stress and attention in the domestic horse (Equus caballus).. Sci Rep 2020 Dec 8;10(1):21409.
                          doi: 10.1038/s41598-020-78386-zpubmed: 33293559google scholar: lookup
                        63. Kortekaas K, Kotrschal K. Social Context Influences Resting Physiology in Dogs.. Animals (Basel) 2020 Nov 26;10(12).
                          doi: 10.3390/ani10122214pubmed: 33255961google scholar: lookup
                        64. Rault JL, Waiblinger S, Boivin X, Hemsworth P. The Power of a Positive Human-Animal Relationship for Animal Welfare.. Front Vet Sci 2020;7:590867.
                          doi: 10.3389/fvets.2020.590867pubmed: 33240961google scholar: lookup
                        65. Aoki T, Itoh M, Chiba A, Kuwahara M, Nogami H, Ishizaki H, Yayou KI. Heart rate variability in dairy cows with postpartum fever during night phase.. PLoS One 2020;15(11):e0242856.
                          doi: 10.1371/journal.pone.0242856pubmed: 33237968google scholar: lookup
                        66. Herbel J, Aurich J, Gautier C, Melchert M, Aurich C. Stress Response of Beagle Dogs to Repeated Short-Distance Road Transport.. Animals (Basel) 2020 Nov 14;10(11).
                          doi: 10.3390/ani10112114pubmed: 33202655google scholar: lookup
                        67. Dai F, Rausk J, Aspegren J, Huhtinen M, Cannas S, Minero M. Use of Detomidine Oromucosal Gel for Alleviation of Acute Anxiety and Fear in Horses: A Pilot Study.. Front Vet Sci 2020;7:573309.
                          doi: 10.3389/fvets.2020.573309pubmed: 33195566google scholar: lookup
                        68. Cruz-Aleixo AS, Castro Ferreira Lima M, Holanda DE Albuquerque AL, Tortorelli Teixeira R, Alves DE Paula R, Grandi MC, Laurenti Ferreira DO, Harumi Tsunemi M, Biagio Chiacchio S, Gomes LourenÇo ML. Heart rate variability in Dorper sheep in the fetal and neonatal periods until 120 days of age: Use of the technique in the field.. J Vet Med Sci 2021 Jan 14;83(1):17-27.
                          doi: 10.1292/jvms.20-0292pubmed: 33191386google scholar: lookup
                        69. Lange A, Bauer L, Futschik A, Waiblinger S, Lürzel S. Talking to Cows: Reactions to Different Auditory Stimuli During Gentle Human-Animal Interactions.. Front Psychol 2020;11:579346.
                          doi: 10.3389/fpsyg.2020.579346pubmed: 33178082google scholar: lookup
                        70. Janczarek I, Stachurska A, Kędzierski W, Wiśniewska A, Ryżak M, Kozioł A. The intensity of physiological and behavioral responses of horses to predator vocalizations.. BMC Vet Res 2020 Nov 10;16(1):431.
                          doi: 10.1186/s12917-020-02643-6pubmed: 33167961google scholar: lookup
                        71. Panzera M, Alberghina D, Statelli A. Ethological and Physiological Parameters Assessment in Donkeys Used in Animal Assisted Interventions.. Animals (Basel) 2020 Oct 13;10(10).
                          doi: 10.3390/ani10101867pubmed: 33066258google scholar: lookup
                        72. Alfonso A, Le Sueur ANV, Geraldes SS, Guimarães-Okamoto PTC, Tsunemi MH, Santana DF, Ribeiro VRF, Melchert A, Chiacchio SB, Lourenço MLG. Heart Rate Variability and Electrocardiographic Parameters Predictive of Arrhythmias in Dogs with Stage IV Chronic Kidney Disease Undergoing Intermittent Haemodialysis.. Animals (Basel) 2020 Oct 8;10(10).
                          doi: 10.3390/ani10101829pubmed: 33050022google scholar: lookup
                        73. Csoltova E, Mehinagic E. Where Do We Stand in the Domestic Dog ( Canis familiaris ) Positive-Emotion Assessment: A State-of-the-Art Review and Future Directions.. Front Psychol 2020;11:2131.
                          doi: 10.3389/fpsyg.2020.02131pubmed: 33013543google scholar: lookup
                        74. Nagel C, Melchert M, Aurich C, Aurich J. Differences in Endocrine and Cardiac Changes in Mares and Her Fetus before, during, and after Parturition in Horses of Different Size.. Animals (Basel) 2020 Sep 4;10(9).
                          doi: 10.3390/ani10091577pubmed: 32899617google scholar: lookup
                        75. Gehlen H, Faust MD, Grzeskowiak RM, Trachsel DS. Association Between Disease Severity, Heart Rate Variability (HRV) and Serum Cortisol Concentrations in Horses with Acute Abdominal Pain.. Animals (Basel) 2020 Sep 2;10(9).
                          doi: 10.3390/ani10091563pubmed: 32887514google scholar: lookup
                        76. Vojtkovská V, Voslářová E, Večerek V. Methods of Assessment of the Welfare of Shelter Cats: A Review.. Animals (Basel) 2020 Aug 28;10(9).
                          doi: 10.3390/ani10091527pubmed: 32872242google scholar: lookup
                        77. Brito LF, Oliveira HR, McConn BR, Schinckel AP, Arrazola A, Marchant-Forde JN, Johnson JS. Large-Scale Phenotyping of Livestock Welfare in Commercial Production Systems: A New Frontier in Animal Breeding.. Front Genet 2020;11:793.
                          doi: 10.3389/fgene.2020.00793pubmed: 32849798google scholar: lookup
                        78. Pellegrino PR, Zucker IH, Chatzizisis YS, Wang HJ, Schiller AM. Quantification of Renal Sympathetic Vasomotion as a Novel End Point for Renal Denervation.. Hypertension 2020 Oct;76(4):1247-1255.
                        79. Amaya V, Paterson MBA, Descovich K, Phillips CJC. Effects of Olfactory and Auditory Enrichment on Heart Rate Variability in Shelter Dogs.. Animals (Basel) 2020 Aug 10;10(8).
                          doi: 10.3390/ani10081385pubmed: 32785115google scholar: lookup
                        80. Pongkan W, Jitnapakarn W, Phetnoi W, Punyapornwithaya V, Boonyapakorn C. Obesity-Induced Heart Rate Variability Impairment and Decreased Systolic Function in Obese Male Dogs.. Animals (Basel) 2020 Aug 10;10(8).
                          doi: 10.3390/ani10081383pubmed: 32785083google scholar: lookup
                        81. Youssef A, Peña Fernández A, Wassermann L, Biernot S, Wittauer EM, Bleich A, Hartung J, Berckmans D, Norton T. An Approach towards Motion-Tolerant PPG-Based Algorithm for Real-Time Heart Rate Monitoring of Moving Pigs.. Sensors (Basel) 2020 Jul 30;20(15).
                          doi: 10.3390/s20154251pubmed: 32751653google scholar: lookup
                        82. Fleming PA, Wickham SL, Dunston-Clarke EJ, Willis RS, Barnes AL, Miller DW, Collins T. Review of Livestock Welfare Indicators Relevant for the Australian Live Export Industry.. Animals (Basel) 2020 Jul 21;10(7).
                          doi: 10.3390/ani10071236pubmed: 32708293google scholar: lookup
                        83. Lay DC Jr, Sapkota A, Enneking SA. Testing the feasibility of using a conveyor belt to load weanling and nursery pigs for transportation.. Transl Anim Sci 2017 Sep;1(3):287-295.
                          doi: 10.2527/tas2017.0033pubmed: 32704653google scholar: lookup
                        84. More S, Bicout D, Bøtner A, Butterworth A, Calistri P, Depner K, Edwards S, Garin-Bastuji B, Good M, Gortázar Schmidt C, Miranda MA, Saxmose Nielsen S, Velarde A, Thulke HH, Sihvonen L, Spoolder H, Stegeman JA, Raj M, Willeberg P, Winckler C, Marano R, Verdonck F, Candiani D, Michel V. Guidance on the assessment criteria for applications for new or modified stunning methods regarding animal protection at the time of killing.. EFSA J 2018 Jul;16(7):e05343.
                          doi: 10.2903/j.efsa.2018.5343pubmed: 32625979google scholar: lookup
                        85. More S, Bicout D, Bøtner A, Butterworth A, Calistri P, Depner K, Edwards S, Garin-Bastuji B, Good M, Gortazar Schmidt C, Miranda MA, Nielsen SS, Sihvonen L, Spoolder H, Willeberg P, Raj M, Thulke HH, Velarde A, Vyssotski A, Winckler C, Cortiñas Abrahantes J, Garcia A, Muñoz Guajardo I, Zancanaro G, Michel V. Low atmospheric pressure system for stunning broiler chickens.. EFSA J 2017 Dec;15(12):e05056.
                          doi: 10.2903/j.efsa.2017.5056pubmed: 32625364google scholar: lookup
                        86. Adcock SJJ, Tucker CB. The effect of early burn injury on sensitivity to future painful stimuli in dairy heifers.. PLoS One 2020;15(6):e0233711.
                          doi: 10.1371/journal.pone.0233711pubmed: 32492026google scholar: lookup
                        87. Sutherland MA, Worth GM, Dowling SK, Lowe GL, Cave VM, Stewart M. Evaluation of infrared thermography as a non-invasive method of measuring the autonomic nervous response in sheep.. PLoS One 2020;15(5):e0233558.
                          doi: 10.1371/journal.pone.0233558pubmed: 32469977google scholar: lookup
                        88. Nie L, Berckmans D, Wang C, Li B. Is Continuous Heart Rate Monitoring of Livestock a Dream or Is It Realistic? A Review.. Sensors (Basel) 2020 Apr 17;20(8).
                          doi: 10.3390/s20082291pubmed: 32316511google scholar: lookup
                        89. Polgár Z, Blackwell EJ, Rooney NJ. Assessing the welfare of kennelled dogs-A review of animal-based measures.. Appl Anim Behav Sci 2019 Apr;213:1-13.
                        90. Uceda DE, Zhu XY, Woollard JR, Ferguson CM, Patras I, Carlson DF, Asirvatham SJ, Lerman A, Lerman LO. Accumulation of Pericardial Fat Is Associated With Alterations in Heart Rate Variability Patterns in Hypercholesterolemic Pigs.. Circ Arrhythm Electrophysiol 2020 Apr;13(4):e007614.
                          doi: 10.1161/CIRCEP.119.007614pubmed: 32189516google scholar: lookup
                        91. Navarro G, Col R, Phillips CJC. Effects of Doubling the Standard Space Allowance on Behavioural and Physiological Responses of Sheep Experiencing Regular and Irregular Floor Motion during Simulated Sea Transport.. Animals (Basel) 2020 Mar 12;10(3).
                          doi: 10.3390/ani10030476pubmed: 32178347google scholar: lookup
                        92. Lange A, Franzmayr S, Wisenöcker V, Futschik A, Waiblinger S, Lürzel S. Effects of Different Stroking Styles on Behaviour and Cardiac Parameters in Heifers.. Animals (Basel) 2020 Mar 4;10(3).
                          doi: 10.3390/ani10030426pubmed: 32143274google scholar: lookup
                        93. Wilk I, Wnuk-Pawlak E, Janczarek I, Kaczmarek B, Dybczyńska M, Przetacznik M. Distribution of Superficial Body Temperature in Horses Ridden by Two Riders with Varied Body Weights.. Animals (Basel) 2020 Feb 21;10(2).
                          doi: 10.3390/ani10020340pubmed: 32098105google scholar: lookup
                        94. Palagi E, Cordoni G. Intraspecific Motor and Emotional Alignment in Dogs and Wolves: The Basic Building Blocks of Dog-Human Affective Connectedness.. Animals (Basel) 2020 Feb 3;10(2).
                          doi: 10.3390/ani10020241pubmed: 32028648google scholar: lookup
                        95. Wang P, Ma Y, Liang F, Zhang Y, Yu X, Li Z, An Q, Lv H, Wang J. Non-Contact Vital Signs Monitoring of Dog and Cat Using a UWB Radar.. Animals (Basel) 2020 Jan 25;10(2).
                          doi: 10.3390/ani10020205pubmed: 31991803google scholar: lookup
                        96. Christensen JW, Bathellier S, Rhodin M, Palme R, Uldahl M. Increased Rider Weight Did Not Induce Changes in Behavior and Physiological Parameters in Horses.. Animals (Basel) 2020 Jan 6;10(1).
                          doi: 10.3390/ani10010095pubmed: 31935981google scholar: lookup
                        97. Mohino-Herranz I, Gil-Pita R, Rosa-Zurera M, Seoane F. Activity Recognition Using Wearable Physiological Measurements: Selection of Features from a Comprehensive Literature Study.. Sensors (Basel) 2019 Dec 13;19(24).
                          doi: 10.3390/s19245524pubmed: 31847261google scholar: lookup
                        98. Scoley G, Gordon A, Morrison S. Performance and Behavioural Responses of Group Housed Dairy Calves to Two Different Weaning Methods.. Animals (Basel) 2019 Nov 1;9(11).
                          doi: 10.3390/ani9110895pubmed: 31683846google scholar: lookup
                        99. Bálint A, Eleőd H, Körmendi J, Bódizs R, Reicher V, Gácsi M. Potential Physiological Parameters to Indicate Inner States in Dogs: The Analysis of ECG, and Respiratory Signal During Different Sleep Phases.. Front Behav Neurosci 2019;13:207.
                          doi: 10.3389/fnbeh.2019.00207pubmed: 31607871google scholar: lookup
                        100. Scoley G, Gordon A, Morrison S. Using Non-Invasive Monitoring Technologies to Capture Behavioural, Physiological and Health Responses of Dairy Calves to Different Nutritional Regimes during the First Ten Weeks of Life.. Animals (Basel) 2019 Oct 2;9(10).
                          doi: 10.3390/ani9100760pubmed: 31581685google scholar: lookup
                        101. Barrell GK. An Appraisal of Methods for Measuring Welfare of Grazing Ruminants.. Front Vet Sci 2019;6:289.
                          doi: 10.3389/fvets.2019.00289pubmed: 31555673google scholar: lookup
                        102. Wang S, Giller K, Hillmann E, Marquardt S, Schwarm A. Effect of supplementation of pelleted hazel (Corylus avellana) leaves on blood antioxidant activity, cellular immune response, and heart beat parameters in sheep1.. J Anim Sci 2019 Nov 4;97(11):4496-4502.
                          doi: 10.1093/jas/skz288pubmed: 31504598google scholar: lookup
                        103. Merkies K, Ready C, Farkas L, Hodder A. Eye Blink Rates and Eyelid Twitches as a Non-Invasive Measure of Stress in the Domestic Horse.. Animals (Basel) 2019 Aug 15;9(8).
                          doi: 10.3390/ani9080562pubmed: 31443315google scholar: lookup
                        104. Katayama M, Kubo T, Yamakawa T, Fujiwara K, Nomoto K, Ikeda K, Mogi K, Nagasawa M, Kikusui T. Emotional Contagion From Humans to Dogs Is Facilitated by Duration of Ownership.. Front Psychol 2019;10:1678.
                          doi: 10.3389/fpsyg.2019.01678pubmed: 31379690google scholar: lookup
                        105. Baciadonna L, Briefer EF, Favaro L, McElligott AG. Goats distinguish between positive and negative emotion-linked vocalisations.. Front Zool 2019;16:25.
                          doi: 10.1186/s12983-019-0323-zpubmed: 31320917google scholar: lookup
                        106. Mendonça T, Bienboire-Frosini C, Menuge F, Leclercq J, Lafont-Lecuelle C, Arroub S, Pageat P. The Impact of Equine-Assisted Therapy on Equine Behavioral and Physiological Responses.. Animals (Basel) 2019 Jul 1;9(7).
                          doi: 10.3390/ani9070409pubmed: 31266217google scholar: lookup
                        107. Rosselot P, Mendonça T, González I, Tadich T. Behavioral and Physiological Differences between Working Horses and Chilean Rodeo Horses in a Handling Test.. Animals (Basel) 2019 Jun 29;9(7).
                          doi: 10.3390/ani9070397pubmed: 31261934google scholar: lookup
                        108. Rodrigues LD, Oliveira LF, Shinoda L, Scorza CA, Faber J, Ferraz HB, Britto LRG, Scorza FA. Cardiovascular alterations in rats with Parkinsonism induced by 6-OHDA and treated with Domperidone.. Sci Rep 2019 Jun 20;9(1):8965.
                          doi: 10.1038/s41598-019-45518-zpubmed: 31222185google scholar: lookup
                        109. Mendonça T, Bienboire-Frosini C, Kowalczyk I, Leclercq J, Arroub S, Pageat P. Equine Activities Influence Horses' Responses to Different Stimuli: Could This Have an Impact on Equine Welfare?. Animals (Basel) 2019 May 29;9(6).
                          doi: 10.3390/ani9060290pubmed: 31146422google scholar: lookup
                        110. Safryghin A, Hebesberger DV, Wascher CAF. Testing for Behavioral and Physiological Responses of Domestic Horses (Equus caballus) Across Different Contexts - Consistency Over Time and Effects of Context.. Front Psychol 2019;10:849.
                          doi: 10.3389/fpsyg.2019.00849pubmed: 31057468google scholar: lookup
                        111. Zhang H, Gutruf P, Meacham K, Montana MC, Zhao X, Chiarelli AM, Vázquez-Guardado A, Norris A, Lu L, Guo Q, Xu C, Wu Y, Zhao H, Ning X, Bai W, Kandela I, Haney CR, Chanda D, Gereau RW 4th, Rogers JA. Wireless, battery-free optoelectronic systems as subdermal implants for local tissue oximetry.. Sci Adv 2019 Mar;5(3):eaaw0873.
                          doi: 10.1126/sciadv.aaw0873pubmed: 30873435google scholar: lookup
                        112. Benn AL, McLelland DJ, Whittaker AL. A Review of Welfare Assessment Methods in Reptiles, and Preliminary Application of the Welfare Quality(®) Protocol to the Pygmy Blue-Tongue Skink, Tiliqua adelaidensis, Using Animal-Based Measures.. Animals (Basel) 2019 Jan 17;9(1).
                          doi: 10.3390/ani9010027pubmed: 30658490google scholar: lookup
                        113. Laborde S, Mosley E, Mertgen A. A unifying conceptual framework of factors associated to cardiac vagal control.. Heliyon 2018 Dec;4(12):e01002.
                          doi: 10.1016/j.heliyon.2018.e01002pubmed: 30623126google scholar: lookup
                        114. Ashtiyani M, Navaei Lavasani S, Asgharzadeh Alvar A, Deevband MR. Heart Rate Variability Classification using Support Vector Machine and Genetic Algorithm.. J Biomed Phys Eng 2018 Dec;8(4):423-434.
                          pubmed: 30568932
                        115. Scopa C, Palagi E, Sighieri C, Baragli P. Physiological outcomes of calming behaviors support the resilience hypothesis in horses.. Sci Rep 2018 Nov 30;8(1):17501.
                          doi: 10.1038/s41598-018-35561-7pubmed: 30504840google scholar: lookup
                        116. Meléndez DM, Marti S, Pajor EA, Sidhu PK, Gellatly D, Moya D, Janzen ED, Coetzee JF, Schwartzkopf-Genswein KS. Effect of meloxicam and lidocaine administered alone or in combination on indicators of pain and distress during and after knife castration in weaned beef calves.. PLoS One 2018;13(11):e0207289.
                          doi: 10.1371/journal.pone.0207289pubmed: 30500846google scholar: lookup
                        117. Broux B, De Clercq D, Vera L, Ven S, Deprez P, Decloedt A, van Loon G. Can heart rate variability parameters derived by a heart rate monitor differentiate between atrial fibrillation and sinus rhythm?. BMC Vet Res 2018 Oct 25;14(1):320.
                          doi: 10.1186/s12917-018-1650-6pubmed: 30359273google scholar: lookup
                        118. Parois SP, Cabezón FA, Schinckel AP, Johnson JS, Stwalley RM, Marchant-Forde JN. Effect of Floor Cooling on Behavior and Heart Rate of Late Lactation Sows Under Acute Heat Stress.. Front Vet Sci 2018;5:223.
                          doi: 10.3389/fvets.2018.00223pubmed: 30298134google scholar: lookup
                        119. Oishi K, Himeno Y, Miwa M, Anzai H, Kitajima K, Yasunaka Y, Kumagai H, Ieiri S, Hirooka H. Correcting the Activity-Specific Component of Heart Rate Variability Using Dynamic Body Acceleration Under Free-Moving Conditions.. Front Physiol 2018;9:1063.
                          doi: 10.3389/fphys.2018.01063pubmed: 30131717google scholar: lookup
                        120. Henzen A, Gygax L. Weak General but No Specific Habituation in Anticipating Stimuli of Presumed Negative and Positive Valence by Weaned Piglets.. Animals (Basel) 2018 Aug 22;8(9).
                          doi: 10.3390/ani8090149pubmed: 30131458google scholar: lookup
                        121. Wierig M, Mandtler LP, Rottmann P, Stroh V, Müller U, Büscher W, Plümer L. Recording Heart Rate Variability of Dairy Cows to the Cloud-Why Smartphones Provide Smart Solutions.. Sensors (Basel) 2018 Aug 3;18(8).
                          doi: 10.3390/s18082541pubmed: 30081480google scholar: lookup
                        122. Bohák Z, Harnos A, Joó K, Szenci O, Kovács L. Anticipatory response before competition in Standardbred racehorses.. PLoS One 2018;13(8):e0201691.
                          doi: 10.1371/journal.pone.0201691pubmed: 30071079google scholar: lookup
                        123. Franzini de Souza CC, Dias DPM, de Souza RN, de Medeiros MA. Use of behavioural and physiological responses for scoring sound sensitivity in dogs.. PLoS One 2018;13(8):e0200618.
                          doi: 10.1371/journal.pone.0200618pubmed: 30067767google scholar: lookup
                        124. Kovács L, Kézér FL, Ruff F, Jurkovich V, Szenci O. Heart rate, cardiac vagal tone, respiratory rate, and rectal temperature in dairy calves exposed to heat stress in a continental region.. Int J Biometeorol 2018 Oct;62(10):1791-1797.
                          doi: 10.1007/s00484-018-1581-8pubmed: 30032363google scholar: lookup
                        125. Varga B, Gergely A, Galambos Á, Kis A. Heart Rate and Heart Rate Variability during Sleep in Family Dogs (Canis familiaris). Moderate Effect of Pre-Sleep Emotions.. Animals (Basel) 2018 Jul 2;8(7).
                          doi: 10.3390/ani8070107pubmed: 30004461google scholar: lookup
                        126. Herskin MS, Nielsen BH. Welfare Effects of the Use of a Combination of Local Anesthesia and NSAID for Disbudding Analgesia in Dairy Calves-Reviewed Across Different Welfare Concerns.. Front Vet Sci 2018;5:117.
                          doi: 10.3389/fvets.2018.00117pubmed: 29922684google scholar: lookup
                        127. Biobaku KT, Omobowale TO, Akeem AO, Aremu A, Okwelum N, Adah AS. Use of goat interleukin-6, cortisol, and some biomarkers to evaluate clinical suitability of two routes of ascorbic acid administration in transportation stress.. Vet World 2018 May;11(5):674-680.
                        128. Virtanen J, Somppi S, Törnqvist H, Jeyhani V, Fiedler P, Gizatdinova Y, Majaranta P, Väätäjä H, Valldeoriola Cardó A, Lekkala J, Tuukkanen S, Surakka V, Vainio O, Vehkaoja A. Evaluation of Dry Electrodes in Canine Heart Rate Monitoring.. Sensors (Basel) 2018 May 30;18(6).
                          doi: 10.3390/s18061757pubmed: 29848952google scholar: lookup
                        129. Al-Omar S, Le Rolle V, Beuchée A, Samson N, Praud JP, Carrault G. Assessment of tobacco smoke effects on neonatal cardiorespiratory control using a semi-automated processing approach.. Med Biol Eng Comput 2018 Nov;56(11):2025-2037.
                          doi: 10.1007/s11517-018-1827-ypubmed: 29744654google scholar: lookup
                        130. Colditz IG. Objecthood, Agency and Mutualism in Valenced Farm Animal Environments.. Animals (Basel) 2018 Apr 3;8(4).
                          doi: 10.3390/ani8040050pubmed: 29614016google scholar: lookup
                        131. Jain-Schlaepfer S, Fakan E, Rummer JL, Simpson SD, McCormick MI. Impact of motorboats on fish embryos depends on engine type.. Conserv Physiol 2018;6(1):coy014.
                          doi: 10.1093/conphys/coy014pubmed: 29593871google scholar: lookup
                        132. Bun C, Watanabe Y, Uenoyama Y, Inoue N, Ieda N, Matsuda F, Tsukamura H, Kuwahara M, Maeda KI, Ohkura S, Pheng V. Evaluation of heat stress response in crossbred dairy cows under tropical climate by analysis of heart rate variability.. J Vet Med Sci 2018 Feb 2;80(1):181-185.
                          doi: 10.1292/jvms.17-0368pubmed: 29225303google scholar: lookup
                        133. Baragli P, Vitale V, Sighieri C, Lanata A, Palagi E, Reddon AR. Consistency and flexibility in solving spatial tasks: different horses show different cognitive styles.. Sci Rep 2017 Nov 29;7(1):16557.
                          doi: 10.1038/s41598-017-16729-zpubmed: 29185468google scholar: lookup
                        134. Siegrist J, Li J. Work Stress and Altered Biomarkers: A Synthesis of Findings Based on the Effort-Reward Imbalance Model.. Int J Environ Res Public Health 2017 Nov 10;14(11).
                          doi: 10.3390/ijerph14111373pubmed: 29125555google scholar: lookup
                        135. Lenoir A, Trachsel DS, Younes M, Barrey E, Robert C. Agreement between Electrocardiogram and Heart Rate Meter Is Low for the Measurement of Heart Rate Variability during Exercise in Young Endurance Horses.. Front Vet Sci 2017;4:170.
                          doi: 10.3389/fvets.2017.00170pubmed: 29090214google scholar: lookup
                        136. Cho D, Ham J, Oh J, Park J, Kim S, Lee NK, Lee B. Detection of Stress Levels from Biosignals Measured in Virtual Reality Environments Using a Kernel-Based Extreme Learning Machine.. Sensors (Basel) 2017 Oct 24;17(10).
                          doi: 10.3390/s17102435pubmed: 29064457google scholar: lookup
                        137. De Santis M, Contalbrigo L, Borgi M, Cirulli F, Luzi F, Redaelli V, Stefani A, Toson M, Odore R, Vercelli C, Valle E, Farina L. Equine Assisted Interventions (EAIs): Methodological Considerations for Stress Assessment in Horses.. Vet Sci 2017 Sep 8;4(3).
                          doi: 10.3390/vetsci4030044pubmed: 29056702google scholar: lookup
                        138. Johns J, Masneuf S, Patt A, Hillmann E. Regular Exposure to Cowbells Affects the Behavioral Reactivity to a Noise Stimulus in Dairy Cows.. Front Vet Sci 2017;4:153.
                          doi: 10.3389/fvets.2017.00153pubmed: 29034247google scholar: lookup
                        139. Pohlin F, Brabender K, Fluch G, Stalder G, Petit T, Walzer C. Seasonal Variations in Heart Rate Variability as an Indicator of Stress in Free-Ranging Pregnant Przewalski's Horses (E. ferus przewalskii) within the Hortobágy National Park in Hungary.. Front Physiol 2017;8:664.
                          doi: 10.3389/fphys.2017.00664pubmed: 28936179google scholar: lookup
                        140. Krause A, Puppe B, Langbein J. Coping Style Modifies General and Affective Autonomic Reactions of Domestic Pigs in Different Behavioral Contexts.. Front Behav Neurosci 2017;11:103.
                          doi: 10.3389/fnbeh.2017.00103pubmed: 28611608google scholar: lookup
                        141. Briefer EF, Mandel R, Maigrot AL, Briefer Freymond S, Bachmann I, Hillmann E. Perception of emotional valence in horse whinnies.. Front Zool 2017;14:8.
                          doi: 10.1186/s12983-017-0193-1pubmed: 28203263google scholar: lookup
                        142. Wathan J, Proops L, Grounds K, McComb K. Horses discriminate between facial expressions of conspecifics.. Sci Rep 2016 Dec 20;6:38322.
                          doi: 10.1038/srep38322pubmed: 27995958google scholar: lookup
                        143. Doerfler RL, Lehermeier C, Kliem H, Möstl E, Bernhardt H. Physiological and Behavioral Responses of Dairy Cattle to the Introduction of Robot Scrapers.. Front Vet Sci 2016;3:106.
                          doi: 10.3389/fvets.2016.00106pubmed: 27965967google scholar: lookup
                        144. Sun G, Shinba T, Kirimoto T, Matsui T. An Objective Screening Method for Major Depressive Disorder Using Logistic Regression Analysis of Heart Rate Variability Data Obtained in a Mental Task Paradigm.. Front Psychiatry 2016;7:180.
                          doi: 10.3389/fpsyt.2016.00180pubmed: 27867364google scholar: lookup
                        145. Mayengbam P, Tolenkhomba TC, Upadhyay RC. Expression of heat-shock protein 72 mRNA in relation to heart rate variability of Sahiwal and Karan-Fries in different temperature-humidity indices.. Vet World 2016 Oct;9(10):1051-1055.
                        146. Baciadonna L, Nawroth C, McElligott AG. Judgement bias in goats (Capra hircus): investigating the effects of human grooming.. PeerJ 2016;4:e2485.
                          doi: 10.7717/peerj.2485pubmed: 27761311google scholar: lookup
                        147. Fischer CP, Romero LM. The use of α- or β-blockers to ameliorate the chronic stress of captivity in the house sparrow (Passer domesticus).. Conserv Physiol 2016;4(1):cow049.
                          doi: 10.1093/conphys/cow049pubmed: 27752321google scholar: lookup
                        148. Loftus L, Marks K, Jones-McVey R, Gonzales JL, Fowler VL. Monty Roberts' Public Demonstrations: Preliminary Report on the Heart Rate and Heart Rate Variability of Horses Undergoing Training during Live Audience Events.. Animals (Basel) 2016 Sep 9;6(9).
                          doi: 10.3390/ani6090055pubmed: 27618108google scholar: lookup
                        149. Patt A, Gygax L, Wechsler B, Hillmann E, Langbein J, Keil NM. Context Specificity of the ANS Stress Response during Two Regrouping Experiments in Goats.. Front Vet Sci 2016;3:58.
                          doi: 10.3389/fvets.2016.00058pubmed: 27551679google scholar: lookup
                        150. Pieritz K, Süssenbach P, Rief W, Euteneuer F. Subjective Social Status and Cardiovascular Reactivity: An Experimental Examination.. Front Psychol 2016;7:1091.
                          doi: 10.3389/fpsyg.2016.01091pubmed: 27486426google scholar: lookup
                        151. González-Sánchez C, Fraile JC, Pérez-Turiel J, Damm E, Schneider JG, Zimmermann H, Schmitt D, Ihmig FR. Capacitive Sensing for Non-Invasive Breathing and Heart Monitoring in Non-Restrained, Non-Sedated Laboratory Mice.. Sensors (Basel) 2016 Jul 7;16(7).
                          doi: 10.3390/s16071052pubmed: 27399713google scholar: lookup
                        152. Sun Y, Lian X, Bo Y, Guo Y, Yan P. Effects of 20-day litter weight on weaned piglets' fighting behavior after group mixing and on heart rate variability in an isolation test.. Asian-Australas J Anim Sci 2017 Feb;30(2):267-274.
                          doi: 10.5713/ajas.16.0215pubmed: 27221252google scholar: lookup
                        153. Fenner K, Yoon S, White P, Starling M, McGreevy P. The Effect of Noseband Tightening on Horses' Behavior, Eye Temperature, and Cardiac Responses.. PLoS One 2016;11(5):e0154179.
                          doi: 10.1371/journal.pone.0154179pubmed: 27140187google scholar: lookup
                        154. Vézina-Audette R, Herry C, Burns P, Frasch M, Chave E, Theoret C. Heart rate variability in relation to stress in the Asian elephant (Elephas maximus).. Can Vet J 2016 Mar;57(3):289-92.
                          pubmed: 26933266
                        155. Kovács L, Kézér FL, Bakony M, Hufnágel L, Tőzsér J, Jurkovich V. Associations between Heart Rate Variability Parameters and Housing- and Individual-Related Variables in Dairy Cows Using Canonical Correspondence Analysis.. PLoS One 2015;10(12):e0145313.
                          doi: 10.1371/journal.pone.0145313pubmed: 26690578google scholar: lookup
                        156. Krause A, Tuchscherer A, Puppe B, Langbein J. Interchangeability of Electrocardiography and Blood Pressure Measurement for Determining Heart Rate and Heart Rate Variability in Free-Moving Domestic Pigs in Various Behavioral Contexts.. Front Vet Sci 2015;2:52.
                          doi: 10.3389/fvets.2015.00052pubmed: 26664979google scholar: lookup
                        157. Grandi LC, Ishida H. The Physiological Effect of Human Grooming on the Heart Rate and the Heart Rate Variability of Laboratory Non-Human Primates: A Pilot Study in Male Rhesus Monkeys.. Front Vet Sci 2015;2:50.
                          doi: 10.3389/fvets.2015.00050pubmed: 26664977google scholar: lookup
                        158. Garcia A, McGlone JJ. Loading and Unloading Finishing Pigs: Effects of Bedding Types, Ramp Angle, and Bedding Moisture.. Animals (Basel) 2014 Dec 31;5(1):13-26.
                          doi: 10.3390/ani5010013pubmed: 26479134google scholar: lookup
                        159. Younes M, Robert C, Cottin F, Barrey E. Speed and Cardiac Recovery Variables Predict the Probability of Elimination in Equine Endurance Events.. PLoS One 2015;10(8):e0137013.
                          doi: 10.1371/journal.pone.0137013pubmed: 26322506google scholar: lookup
                        160. Kovács L, Kézér FL, Tőzsér J, Szenci O, Póti P, Pajor F. Heart Rate and Heart Rate Variability in Dairy Cows with Different Temperament and Behavioural Reactivity to Humans.. PLoS One 2015;10(8):e0136294.
                          doi: 10.1371/journal.pone.0136294pubmed: 26291979google scholar: lookup
                        161. Kovács L, Kézér FL, Jurkovich V, Kulcsár-Huszenicza M, Tőzsér J. Heart Rate Variability as an Indicator of Chronic Stress Caused by Lameness in Dairy Cows.. PLoS One 2015;10(8):e0134792.
                          doi: 10.1371/journal.pone.0134792pubmed: 26270563google scholar: lookup
                        162. Johns J, Patt A, Hillmann E. Do bells affect behaviour and heart rate variability in grazing dairy cows?. PLoS One 2015;10(6):e0131632.
                          doi: 10.1371/journal.pone.0131632pubmed: 26110277google scholar: lookup
                        163. Miwa M, Oishi K, Nakagawa Y, Maeno H, Anzai H, Kumagai H, Okano K, Tobioka H, Hirooka H. Application of overall dynamic body acceleration as a proxy for estimating the energy expenditure of grazing farm animals: relationship with heart rate.. PLoS One 2015;10(6):e0128042.
                          doi: 10.1371/journal.pone.0128042pubmed: 26030931google scholar: lookup
                        164. Coulon M, Nowak R, Peyrat J, Chandèze H, Boissy A, Boivin X. Do lambs perceive regular human stroking as pleasant? Behavior and heart rate variability analyses.. PLoS One 2015;10(2):e0118617.
                          doi: 10.1371/journal.pone.0118617pubmed: 25714604google scholar: lookup
                        165. Yoshida M, Onda K, Wada Y, Kuwahara M. Influence of sickness condition on diurnal rhythms of heart rate and heart rate variability in cows.. J Vet Med Sci 2015 Mar;77(3):375-9.
                          doi: 10.1292/jvms.14-0402pubmed: 25648088google scholar: lookup
                        166. Schöberl I, Kortekaas K, Schöberl FF, Kotrschal K. Algorithm-supported visual error correction (AVEC) of heart rate measurements in dogs, Canis lupus familiaris.. Behav Res Methods 2015 Dec;47(4):1356-1364.
                          doi: 10.3758/s13428-014-0546-zpubmed: 25540125google scholar: lookup
                        167. Davies AC, Nicol CJ, Persson ME, Radford AN. Behavioural and physiological effects of finely balanced decision-making in chickens.. PLoS One 2014;9(9):e108809.
                          doi: 10.1371/journal.pone.0108809pubmed: 25275440google scholar: lookup
                        168. Romero T, Nagasawa M, Mogi K, Hasegawa T, Kikusui T. Oxytocin promotes social bonding in dogs.. Proc Natl Acad Sci U S A 2014 Jun 24;111(25):9085-90.
                          doi: 10.1073/pnas.1322868111pubmed: 24927552google scholar: lookup
                        169. Dhar P, Sharma VK, Hota KB, Das SK, Hota SK, Srivastava RB, Singh SB. Autonomic cardiovascular responses in acclimatized lowlanders on prolonged stay at high altitude: a longitudinal follow up study.. PLoS One 2014;9(1):e84274.
                          doi: 10.1371/journal.pone.0084274pubmed: 24404157google scholar: lookup
                        170. Berry M, Jaquiery A, Oliver M, Harding J, Bloomfield F. Preterm birth has sex-specific effects on autonomic modulation of heart rate variability in adult sheep.. PLoS One 2013;8(12):e85468.
                          doi: 10.1371/journal.pone.0085468pubmed: 24386475google scholar: lookup
                        171. Dong S, Boashash B, Azemi G, Lingwood BE, Colditz PB. Automated detection of perinatal hypoxia using time-frequency-based heart rate variability features.. Med Biol Eng Comput 2014 Feb;52(2):183-91.
                          doi: 10.1007/s11517-013-1129-3pubmed: 24272142google scholar: lookup
                        172. Sasaki K, Matsushita S, Sato F, Tokunaga C, Hyodo K, Sakakibara Y. Cardiac sympathetic activity assessed by heart rate variability indicates myocardial ischemia on cold exposure in diabetes.. Ann Vasc Dis 2013;6(3):583-9.
                          doi: 10.3400/avd.cr.13-00064pubmed: 24130613google scholar: lookup
                        173. Le Rolle V, Ojeda D, Beuchée A, Praud JP, Pladys P, Hernández AI. A model-based approach for the evaluation of vagal and sympathetic activities in a newborn lamb.. Annu Int Conf IEEE Eng Med Biol Soc 2013;2013:3881-4.
                          doi: 10.1109/EMBC.2013.6610392pubmed: 24110579google scholar: lookup
                        174. Graunke KL, Nürnberg G, Repsilber D, Puppe B, Langbein J. Describing temperament in an ungulate: a multidimensional approach.. PLoS One 2013;8(9):e74579.
                          doi: 10.1371/journal.pone.0074579pubmed: 24040289google scholar: lookup
                        175. Johnson TL, Tulis DA, Keeler BE, Virag JA, Lust RM, Clemens S. The dopamine D3 receptor knockout mouse mimics aging-related changes in autonomic function and cardiac fibrosis.. PLoS One 2013;8(8):e74116.
                          doi: 10.1371/journal.pone.0074116pubmed: 24023697google scholar: lookup
                        176. Romero T, Konno A, Hasegawa T. Familiarity bias and physiological responses in contagious yawning by dogs support link to empathy.. PLoS One 2013;8(8):e71365.
                          doi: 10.1371/journal.pone.0071365pubmed: 23951146google scholar: lookup
                        177. Gácsi M, Maros K, Sernkvist S, Faragó T, Miklósi A. Human analogue safe haven effect of the owner: behavioural and heart rate response to stressful social stimuli in dogs.. PLoS One 2013;8(3):e58475.
                          doi: 10.1371/journal.pone.0058475pubmed: 23469283google scholar: lookup
                        178. Konold T, Bone GE. Heart rate variability analysis in sheep affected by transmissible spongiform encephalopathies.. BMC Res Notes 2011 Dec 14;4:539.
                          doi: 10.1186/1756-0500-4-539pubmed: 22168827google scholar: lookup
                        179. Konold T, Bone GE, Simmons MM. Time and frequency domain analysis of heart rate variability in cattle affected by bovine spongiform encephalopathy.. BMC Res Notes 2011 Jul 25;4:259.
                          doi: 10.1186/1756-0500-4-259pubmed: 21787422google scholar: lookup
                        180. Lucena F, Barros AK, Príncipe JC, Ohnishi N. Statistical coding and decoding of heartbeat intervals.. PLoS One 2011;6(6):e20227.
                          doi: 10.1371/journal.pone.0020227pubmed: 21694763google scholar: lookup
                        181. Ropert-Coudert Y, Brooks L, Yamamoto M, Kato A. ECG response of koalas to tourists proximity: a preliminary study.. PLoS One 2009 Oct 12;4(10):e7378.
                          doi: 10.1371/journal.pone.0007378pubmed: 19823679google scholar: lookup
                        182. Yamamoto M, Kato A, Ropert-Coudert Y, Kuwahara M, Hayama S, Naito Y. Evidence of dominant parasympathetic nervous activity of great cormorants (Phalacrocorax carbo).. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2009 Apr;195(4):365-73.
                          doi: 10.1007/s00359-009-0414-ypubmed: 19198851google scholar: lookup