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Lambs show changes in ear posture when experiencing pain

Published online by Cambridge University Press:  01 January 2023

MJ Guesgen ,
NJ Beausoleil ,
EO Minot ,
M Stewart ,
KJ Stafford  and
PCH Morel
MJ Guesgen
Affiliation:
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand
NJ Beausoleil*
Affiliation:
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand
EO Minot
Affiliation:
Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand
M Stewart
Affiliation:
InterAg, Waikato Innovation Park, Hamilton 3240, New Zealand
KJ Stafford
Affiliation:
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand
PCH Morel
Affiliation:
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand
*
* Contact for correspondence and requests for reprints: [email protected]
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Abstract

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Ear posture, or the frequency of postural changes, may reflect various emotional states of animals. In adult sheep (Ovis aries), the ‘forward’ ear posture has been associated with negative experiences whereas the ‘plane’ posture has been associated with positive ones. This study aimed to see whether ear postures related to the experience of pain in lambs. The ear behaviour of four to eight week-old lambs (n = 44) was measured before and after tail-docking using a rubber ring. Each lamb was docked and its behaviour recorded while in the company of an observer lamb of similar age; each acted once as focal (docked) lamb and once as observer within the same pair. Lambs were docked in one of two rounds, so that half were docked in their first exposure to the test environment and half in their second exposure. Tail-docking was associated with an increase in the proportion of time spent with ears backward and decreases in the proportion of time spent with ears plane and forward (mean [± SEM]: Backward: pre 0.12 [± 0.04], post 0.56 [± 0.04]; Plane: pre 0.55 [± 0.05], post 0.19 [± 0.05]; Forward: pre 0.27 [± 0.04], post 0.18 [± 0.04]). There was also a significant increase in the number of changes between ear postures after docking (pre 5.63 [± 0.66], post 9.11 [± 0.66]). Over both periods, female lambs held their ears asymmetrically for longer than males (mean of ranks [± SEM] [raw proportion of time]: Females 52.14 [± 3.44] [0.09 (± 0.01)], males 37.54 [± 3.40] [0.05 (± 0.01)]). This is the first study to demonstrate changes in the ear posture of lambs associated with the negative experience of pain. Ear posture is a non-invasive indicator of physical pain in lambs and may be useful for evaluating potential welfare compromise.

Keywords

animal welfareear postureemotionhusbandrylambpain
Type
Research Article
Information
Animal Welfare , Volume 25 , Issue 2 , May 2016 , pp. 171 - 177
Copyright
© 2016 Universities Federation for Animal Welfare

References

Allen, C 2004 Animal Pain. Nous 38: 617–643. http://dx.doi.org/10.1111/j.0029-4624.2004.00486.xCrossRefGoogle Scholar
Anon 2005 Animal Welfare (Painful Husbandry Procedures) Code of Welfare. Ministry for Primary Industries (MPI): Wellington, New ZealandGoogle Scholar
Boissy, A, Aubert, A, Désiré, L, Greiveldinger, L, Delval, E and Veissier, I 2011 Cognitive sciences to relate ear postures to emotions in sheep. Animal Welfare 20: 47–56Google Scholar
Clayton, DA 1978 Socially facilitated behavior. Quarterly Review of Biology 53: 373–392. http://dx.doi.org/10.1086/410789CrossRefGoogle Scholar
Colditz, IG, Paull, DR and Lee, C 2012 Social transmission of physiological and behavioural responses to castration in suckling Merino lambs. Applied Animal Behavioural Science 136: 136–145. http://dx.doi.org/10.1016/j.applanim.2011.12.011CrossRefGoogle Scholar
Coulon, M, Baudoin, C, Heyman, Y and Deputte, BL 2011 Cattle discriminate between familiar and unfamiliar conspecifics by using only head visual cues. Animal Cognition 14: 279–290. http://dx.doi.org/10.1007/s10071-010-0361-6CrossRefGoogle ScholarPubMed
Dalla Costa, E, Minero, M, Lebelt, D, Stucke, D, Canali, E and Leach, M 2014 Development of the Horse Grimace Scale (HGS) as a pain assessment tool in horses undergoing routine castration. PLoS One 9: e92281. http://dx.doi.org/10.1371/jour-nal.pone.0092281CrossRefGoogle ScholarPubMed
deNicolo, G, Morris, ST, Kenyon, PR, Kemp, PD and Morel, PCH 2014 Ewe reproduction and lambing performance in a five period mating system. New Zealand Journal of Agricultural Research 51: 397–407. http://dx.doi.org/10.1080/00288230809510470CrossRefGoogle Scholar
Ferreira, G, Keller, M, Saint-Dizier, H, Perrin, G and Lévy, F 2004 Transfer between views of conspecific faces at different ages or in different orientations by sheep. Behavioural Processes 67:491–499. http://dx.doi.org/10.1016/j.beproc.2004.08.005CrossRefGoogle ScholarPubMed
Fox, MW 1971 Behaviour of Wolves, Dogs and Related Canids. Jonathan Cape Ltd: London, UKGoogle Scholar
Grant, C 2004 Behavioural responses of lambs to common pain-ful husbandry procedures. Applied Animal Behaviour Science 87:255–273. http://dx.doi.org/10.1016/j.applanim.2004.01.011CrossRefGoogle Scholar
Guesgen, MJ, Beausoleil, NJ, Minot, EO, Stewart, M and Stafford, KJ 2014 Social context and other factors influence the behavioural expression of pain in lambs. Applied Animal Behaviour Science 159: 41–49. http://dx.doi.org/10.1016/j.applanim.2014.07.008CrossRefGoogle Scholar
Hamilton, WD 1964 The genetic evolution of social behaviour. Journal of Theoretical Biology 7: 1–16. http://dx.doi.org/10.1016/0022-5193(64)90038-4CrossRefGoogle Scholar
Hild, S, Andersen, IL and Zanella, AJ 2010 The relationship between thermal nociceptive threshold in lambs and ewe-lamb interactions. Small Ruminant Research 90: 142–145. http://dx.doi.org/10.1016/j.smallrumres.2009.12.008CrossRefGoogle Scholar
Johnson, CB, Sylvester, SP, Stafford, KJ, Mitchinson, SL, Ward, RN and Mellor, DJ 2009 Effects of age on the electroencephalo-graphic response to castration in lambs anaesthetized with halothane in oxygen from birth to 6 weeks old. Veterinary Anaesthesia and Analgesia 36: 273–279. http://dx.doi.org/10.1111/j.1467-2995.2009.00448.xCrossRefGoogle Scholar
Jongman, EC, Morris, JP, Barnett, JL and Hemsworth, PH 2000 EEG changes in 4-week-old lambs in response to castration, tail docking and mulesing. Australian Veterinary Journal 78: 339–343. http://dx.doi.org/10.1111/j.1751-0813.2000.tb11789.xCrossRefGoogle ScholarPubMed
Keating, SCJ, Thomas, AA, Flecknell, PA and Leach, MC 2012 Evaluation of EMLA cream for preventing pain during tattooing of rabbits: Changes in physiological, behavioural and facial expression responses. PLoS One 7: e44437. http://dx.doi.org/10.1371/journal.pone.0044437CrossRefGoogle ScholarPubMed
Kendrick, KM, Atkins, K, Hinton, MR, Broad, KD, Fabre-Nys, C and Keverne, B 1995 Facial and vocal discrimination in sheep. Animal Behaviour 49: 1665–1676. http://dx.doi.org/10.1016/0003-3472(95)90088-8CrossRefGoogle Scholar
Kendrick, KM, Atkins, K, Hinton, MR, Heavens, P and Keverne, B 1996 Are faces special for sheep? Evidence from facial and object discrimination learning tests showing effects of invers-ion and social familiarity. Behavioural Processes 38: 19–35. http://dx.doi.org/10.1016/0376-6357(96)00006-XCrossRefGoogle ScholarPubMed
Kendrick, KM, da Costa, AP, Leigh, AE, Hinton, MR and Peirce, JW 2007 Sheep don't forget a face. Nature 447: 346–346. http://dx.doi.org/10.1038/nature05882CrossRefGoogle Scholar
Kendrick, KM, Leigh, A and Peirce, J 2001 Behavioural and neural correlates of mental imagery in sheep using face recognition paradigms. Animal Welfare 10: S89–S101Google Scholar
Lester, SJ, Mellor, DJ, Holmes, RJ, Ward, RN and Stafford, KJ 1996 Behavioural and cortisol responses of lambs to castration and tailing using different methods. New Zealand Veterinary Journal 44: 45–54. http://dx.doi.org/10.1080/00480169.1996.35933CrossRefGoogle ScholarPubMed
Manteuffel, G 2006 Positive emotions of animals: problems and chances of scientifically grounded welfare-improvement Aktuelle Arbeiten zur artgemaeßen Tierhaltung pp 9–22. KTBL-Schrift 448: Darmstadt, GermanyGoogle Scholar
Matsumiya, LC, Sorge, RE, Sotocinal, SG, Tabaka, JM, Wieskopf, JS, Zaloum, A, King, OD and Mogil, JS 2012 Using the Mouse Grimace Scale to reevaluate the efficacy of postoperative analgesics in laboratory mice. Journal of the American Association for Laboratory Animal Science 51: 42–49Google ScholarPubMed
Maynard Smith, J and Harper, D 2003 Animal Signals. Oxford University Press: Auckland, New ZealandGoogle Scholar
Mellor, DJ and Stafford, KJ 2000 Acute castration and/or tailing distress and its alleviation in lambs. New Zealand Veterinary Journal 48: 33–43. http://dx.doi.org/10.1080/00480169.2000.36156CrossRefGoogle ScholarPubMed
Moe, RO, Bakken, M, Kittilsen, S, Kingsley-Smith, H and Spruijt, BM 2006 A note on reward-related behaviour and emotional expressions in farmed silver foxes (Vulpes vulpes): Basis for a novel tool to study animal welfare. Applied Animal Behaviour Science 101: 362–368. http://dx.doi.org/10.1016/j.applanim.2006.02.004CrossRefGoogle Scholar
Molony, V and Kent, JE 1997 Assessment of acute pain in farm animals using behavioral and physiological measurements. Journal of Animal Science 75: 266–272CrossRefGoogle ScholarPubMed
Reefmann, N, Kaszas, FB, Wechsler, B and Gygax, L 2009a Ear and tail postures as indicators of emotional valence in sheep. Applied Animal Behaviour Science 118: 199–207. http://dx.doi.org/10.1016/j.applanim.2009.02.013CrossRefGoogle Scholar
Reefmann, N, Muehlemann, T, Wechsler, B and Gygax, L 2012 Housing induced mood modulates reactions to emotional stimuli in sheep. Applied Animal Behaviour Science 136: 146–155. http://dx.doi.org/10.1016/j.applanim.2011.12.007CrossRefGoogle Scholar
Reefmann, N, Wechsler, B and Gygax, L 2009b Behavioural and physiological assessment of positive and negative emotion in sheep. Animal Behaviour 78: 651–659. http://dx.doi.org/10.1016/j.anbehav.2009.06.015CrossRefGoogle Scholar
Sotocinal, SG, Sorge, RE, Zaloum, A, Tuttle, AH, Martin, LJ, Wieskopf, JS, Mapplebeck, JCS, Wei, P, Zhan, S, Zhang, S, McDougall, JJ, King, OD and Mogil, JS 2011 The Rat Grimace Scale: a partially automated method for quantifying pain in the laboratory rat via facial expressions. Molecular Pain 7: 1–10. http://dx.doi.org/10.1186/1744-8069-7-55Google ScholarPubMed
Stubsjøen, SM, Flo, AS, Moe, RO, Janczak, AM, Skjerve, E, Valle, PS and Zanella, AJ 2009 Exploring non-invasive methods to assess pain in sheep. Physiology and Behavior 98: 640–648. http://dx.doi.org/10.1016/j.physbeh.2009.09.019CrossRefGoogle ScholarPubMed
Thornton, PD and Waterman-Pearson, AE 2002 Behavioural responses to castration in lambs. Animal Welfare 11: 203–212Google Scholar
Veissier, I, Boissy, A, Desire, L and Greiveldinger, L 2009 Animals’ emotions: studies in sheep using appraisal theories. Animal Welfare 18: 347–354Google Scholar
Vögeli, S, Wechsler, B and Gygax, L 2014 Welfare by the ear: comparing relative durations and frequencies of ear postures by using an automated tracking system in sheep. Animal Welfare 23:267–274. http://dx.doi.org/10.7120/09627286.23.3.267CrossRefGoogle Scholar
Williams, ACD 2002 Facial expression of pain: an evolutionary account. Behavioral and Brain Sciences 25: 439–488. http://dx.doi.org/10.1017/s0140525x02000080Google ScholarPubMed