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Equine on-farm welfare assessment: a review of animal-based indicators

Published online by Cambridge University Press:  01 January 2023

E Dalla Costa ,
L Murray ,
F Dai ,
E Canali  and
M Minero
E Dalla Costa*
Affiliation:
Università degli Studi di Milano, Dipartimento di Scienze Veterinarie e Sanità Pubblica, Via Celoria 10, 20133 Milano, Italy
L Murray
Affiliation:
Università degli Studi di Milano, Dipartimento di Scienze Veterinarie e Sanità Pubblica, Via Celoria 10, 20133 Milano, Italy
F Dai
Affiliation:
Università degli Studi di Milano, Dipartimento di Scienze Veterinarie e Sanità Pubblica, Via Celoria 10, 20133 Milano, Italy
E Canali
Affiliation:
Università degli Studi di Milano, Dipartimento di Scienze Veterinarie e Sanità Pubblica, Via Celoria 10, 20133 Milano, Italy
M Minero
Affiliation:
Università degli Studi di Milano, Dipartimento di Scienze Veterinarie e Sanità Pubblica, Via Celoria 10, 20133 Milano, Italy
*
* Contact for correspondence and requests for reprints: emanuela.dallacosta@unimi.it
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Abstract

The adaptability of horses and donkeys to different types of activity has seen the European equine industry become an important economic sector, giving rise to increasing concern regarding equine welfare. As part of the AWIN (Animal Welfare Indicators) project, this review focuses on scientific literature to find potential animal-based welfare indicators — the initial step in developing a valid, reliable and feasible on-farm welfare assessment protocol for equines. Forty-nine indicators were considered and classified in accordance with the four Principles and twelve Criteria developed by Welfare Quality®. Only practical indicators specifically for on-farm use were included, those requiring the use of specific instruments or laboratory analysis were excluded. Academic scientists, partners and collaborators of the AWIN project, discussed and agreed on validity, reliability, on-farm feasibility and acceptance by farmers for each indicator. Some aspects of equine welfare have been thoroughly investigated and appear to have indicators ready for on-farm use (eg ‘absence of prolonged hunger’, ‘absence of injuries and diseases’). On the other hand, a lack of animal-based measures were identified for other Criteria such as ‘absence of pain’ and ‘positive emotional state’. Ongoing research within the AWIN project has begun exploring some of the aforementioned Criteria — these preliminary results of promising indicators have been included (eg Horse Grimace Scale and Qualitative Behaviour Assessment). Further research should address the validity and reliability of indicators, such as human-animal relationship tests and signs of cold stress. As well as for working equines, the development and application of a welfare assessment protocol could be the first step for enhancing on-farm equine welfare.

Keywords

animal-based indicatoranimal welfaredonkey welfareequine welfarehorse welfareon-farm welfare assessment protocol
Type
Research Article
Information
Animal Welfare , Volume 23 , Issue 3 , August 2014 , pp. 323 - 341
Copyright
© 2014 Universities Federation for Animal Welfare

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References

Acock, AC 2008 A Gentle Introduction to Stata. Stata Press: College Station, USAGoogle Scholar
Ashley, FH, Waterman-Pearson, AE and Whay, HR 2005 Behavioural assessment of pain in horses and donkeys: application to clinical practice and future studies. Equine Veterinary Journal 37:565–575. http://dx.doi.org/10.2746/042516405775314826CrossRefGoogle ScholarPubMed
Asknes, F and Mejdell, C 2012 Back soreness is common among ‘healthy’ riding horses. Proceedings of the 46th Congress of the International Society for Applied Ethology p 236. 31 July-4 August 2012, Vienna, AustriaGoogle Scholar
Bachmann, I, Audigé, L and Stauffacher, M 2003 Risk factors associated with behavioural disorders of crib-biting, weaving and box-walking in Swiss horses. Equine Veterinary Journal 35: 158–163. http://dx.doi.org/10.2746/042516403776114216CrossRefGoogle ScholarPubMed
Blokhuis, HJ, Veissier, I, Miele, M and Jones, B 2010 The Welfare Quality® project and beyond: safeguarding farm animal well-being. Acta Agriculturæ Scandinavica, Section A - Animal Science 60: 129–140Google Scholar
Boe, KE and Faerevik, G 2003 Grouping and social preferences in calves, heifers and cows. Applied Animal Behaviour 3: 175–190. http://dx.doi.org/10.1016/S0168-1591(02)00217-4Google Scholar
Boissy, A, Manteuffel, G, Jensen, MB, Moe, RO, Spruijt, B, Keeling, LJ, Winckler, C, Forkman, B, Dimitrov, I, Langbein, J, Bakken, M, Veissier, I and Aubert, A 2007 Assessment of positive emotions in animals to improve their welfare. Physiology & Behavior 92: 375–397. http://dx.doi.org/10.1016/j.physbeh.2007.02.003Google ScholarPubMed
Brambell, FWR 1965 Report of the Technical Committee to Enquire into the Welfare of Animals Kept under Intensive Livestock Husbandry Systems. HM Stationery Office: London, UKGoogle Scholar
Broom, DM 2011 A history of animal welfare science. Acta Biotheoretica 59: 121–137. http://dx.doi.org/10.1007/s10441-011-9123-3CrossRefGoogle ScholarPubMed
Broom, DM and Kennedy, M 1993 Stereotypies in horses: their relevance to welfare and causation. Equine Veterinary Education 5:2042–3292. http://dx.doi.org/10.1111/j.2042-3292.1993.tb01026.xCrossRefGoogle Scholar
Burden, F 2012 Practical feeding and condition scoring for don-keys and mules. Equine Veterinary Education 24: 589–596. http://dx.doi.org/10.1111/j.2042-3292.2011.00314.xCrossRefGoogle Scholar
Burkholder, WJ 2000 Assessment of the provision of optimal nutrition. Journal of the American Veterinary Medical Association 217:650–654. http://dx.doi.org/10.2460/javma.2000.217.650Google ScholarPubMed
Burn, C, Pritchard, J and Whay, H 2009 Observer reliability for working equine welfare assessment: problems with high prevalences of certain results. Animal Welfare 18: 177–187Google Scholar
Burn, CC, Dennison, TL and Whay, HR 2010 Relationships between behaviour and health in working horses, donkeys, and mules in developing countries. Applied Animal Behaviour Science 126: 109–118. http://dx.doi.org/10.1016/j.applanim.2010.06.007Google Scholar
Bussières, G, Jacques, C, Lainay, O, Beauchamp, G, Leblond, A, Cadoré, J-L, Desmaizières, L-M, Cuvelliez, SG, Troncy, E and Desmaizie, L 2008 Development of a composite orthopaedic pain scale in horses. Research in Veterinary Science 85:294–306. http://dx.doi.org/10.1016/j.rvsc.2007.10.011Google ScholarPubMed
Cappai, MG, Picciau, M and Pinna, W 2013 An integrated approach towards the nutritional assessment of the Sardinian donkey: a tool for clinical nutritionists. Italian Journal of Animal Science 12: 12–15. http://dx.doi.org/10.4081/ijas.2013.e29CrossRefGoogle Scholar
Carrol, C and Huntington, P 1988 Body condition scoring and weight estimation of horses. Equine Veterinary Journal 20: 41–45. http://dx.doi.org/10.1111/j.2042-3306.1988.tb01451.xCrossRefGoogle Scholar
Chaplin, SJ and Gretgrix, L 2010 Effect of housing conditions on activity and lying behaviour of horses. Animal 4: 792–795. http://dx.doi.org/10.1017/S1751731109991704Google ScholarPubMed
Christensen, JW, Keeling, LJ and Nielsen, BL 2005 Responses of horses to novel visual, olfactory and auditory stimuli. Applied Animal Behaviour Science 93(1-2): 53–65. http://dx.doi.org/10.1016/j.applanim.2005.06.017CrossRefGoogle Scholar
Christensen, JW, Malmkvist, J, Nielsen, BL and Keeling, LJ 2008 Effects of a calm companion on fear reactions in naïve test horses. Equine Veterinary Journal 40: 46–50. http://dx.doi.org/10.2746/042516408X245171CrossRefGoogle ScholarPubMed
Cooper, J and Albentosa, M 2005 Behavioural adaptation in the domestic horse: potential role of apparently abnormal responses including stereotypic behaviour. Livestock Production Science 92:177–218. http://dx.doi.org/10.1016/j.livprodsci.2004.11.017CrossRefGoogle Scholar
Cooper, J and Mason, G 1998 The identification of abnormal behavior and behavioural problems in stabled horses and their relationship to horse welfare: a comparative review. Equine Veterinary Journal Supplement 27: 5–9Google Scholar
Couëtil, L and Hoffman, A 2007 Inflammatory airway disease of horses. Journal of Veterinary Internal Medicine 21: 356–361. http://dx.doi.org/10.1111/j.1939-1676.2007.tb02975.xCrossRefGoogle ScholarPubMed
Dalla Costa, E, Bonaita, C, Pedretti, S, Govoni, E, Guzzeloni, A, Canali, E and Minero, M 2012a Inter-observer reliability of three human-horse relationship tests. Eighth International Society of Equitation Science Conference p 94. 18-20 July 2012, Edinburgh, UKGoogle Scholar
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/journal.pone.0092281CrossRefGoogle ScholarPubMed
Dalla Costa, E, Rabolini, A, Scelsa, A, Canali, E and Minero, M 2012c A study on inter-observer reliability of castration pain assessment in horses. Second International Equine Science Meeting p 52. 16-19 March 2012, Regensburg, GermanyGoogle Scholar
Dalla Costa, E, Rabolini, A, Scelsa, A, Ravasio, G, Pecile, A, Lazzaretti, S, Canali, E and Minero, M 2012b Behavioural indi-cators of pain in horses undergoing surgical castration. Proceedings of the 46th Congress of the International Society for Applied Ethology p 235. 31 July-4 August 2012, Vienna, AustriaGoogle Scholar
Dierendonck, M and van Goodwin, D 2005 Social contact in horses: implications for human-horse interactions. In: Francien Henriëtte de Jonge (ed) The Human-Animal Relationship: Forever and a Day pp 65–82. Ruud van den Bos: Assen, The NetherlandsGoogle Scholar
EFSA Panel on Animal Health and Welfare (AHAW) 2012 Statement on the use of animal-based measures to assess the welfare of animals. EFSA Journal 10: 1–29Google Scholar
Ellis, J and Hollands, T 1998 Accuracy of different methods of estimating the weight of horses. Veterinary Record 143: 335–337. http://dx.doi.org/10.1136/vr.143.12.335CrossRefGoogle ScholarPubMed
Ellis, J and Hollands, T 2002 Use of height-specific weigh tapes to estimate the bodyweight of horses. Veterinary Record 3: 632–635. http://dx.doi.org/10.1136/vr.150.20.632CrossRefGoogle Scholar
European Horse Network 2010 Key Figures. http://www.euro-peanhorsenetwork.eu/index.php?page=horse-industry-in-europeGoogle Scholar
Faostat 2011 www.faostat.fao.orgGoogle Scholar
Farm Animal Welfare Council 1979 http://www.fawc.org.uk/freedoms.htmGoogle Scholar
Feh, C and de Mazières, J 1993 Grooming at a preferred site reduces heart rate in horses. Animal Behaviour 46: 1191–1194. http://dx.doi.org/10.1006/anbe.1993.1309CrossRefGoogle Scholar
Fleming, P and Paisley, C 2013 Application of Qualitative Behavioural Assessment to horses during an endurance ride. Animal Behaviour 144: 80–88. http://dx.doi.org/10.1016/j.applanim.2012.12.001Google Scholar
Fraser, D 2001 The ‘new perception’ of animal agriculture: leg-less cows, featherless chickens, and a need for genuine analysis. Journal of Animal Science 79: 634–641CrossRefGoogle Scholar
Górecka-Bruzda, A, Jastrzębska, E, Sosnowska, Z, Jaworski, Z, Jezierski, T and Chruszczewski, MH 2011 Reactivity to humans and fearfulness tests: field validation in Polish Cold Blood Horses. Applied Animal Behaviour Science 133: 207–215. http://dx.doi.org/10.1016/j.applanim.2011.05.011Google Scholar
Graubner, C, Gerber, V, Doherr, M and Spadavecchia, C 2011 Clinical application and reliability of a post abdominal sur-gery pain assessment scale (PASPAS) in horses. Veterinary Journal 188: 178–183. http://dx.doi.org/10.1016/j.tvjl.2010.04.029Google Scholar
Harewood, E and McGowan, C 2005 Behavioral and physiolog-ical responses to stabling in naive horses. Journal of Equine Veterinary Science 25: 164–170. http://dx.doi.org/10.1016/j.jevs.2005.03.008Google Scholar
Heleski, CR and Murtazashvili, I 2010 Daytime shelter-seeking behavior in domestic horses. Journal of Veterinary Behavior: Clinical Applications and Research 5: 276–282. http://dx.doi.org/10.1016/j.jveb.2010.01.003Google Scholar
Heleski, CR, Shelle, AC, Nielsen, BD and Zanella, AJ 2002 Influence of housing on weanling horse behavior and subsequent welfare. Applied Animal Behaviour Science 78: 291–302. http://dx.doi.org/10.1016/S0168-1591(02)00108-9Google Scholar
Henneke, DR, Potter, GD, Kreider, JL and Yeates, BF 1983 Relationship between condition score, physical measurements and body fat percentage in mares. Equine Veterinary Journal 15:371–372. http://dx.doi.org/10.1111/j.2042-3306.1983.tb01826.xGoogle ScholarPubMed
Henry, S, Hemery, D, Richard, MA and Hausberger, M 2005 Human-mare relationships and behaviour of foals toward humans. Applied Animal Behaviour Science 93: 341–362. http://dx.doi.org/10.1016/j.applanim.2005.01.008CrossRefGoogle Scholar
Holcomb, K, Tucker, C and Stull, C 2013 Do horses benefit from provision of shade in hot, sunny weather, and do they pre-fer it? 9th International Equitation Science Conference p 45. 17-20 July 2013, Newark, USAGoogle Scholar
Hothersall, B and Casey, R 2012 Undesired behaviour in hors-es: a review of their development, prevention, management and association with welfare. Equine Veterinary Education 24: 479–485. http://dx.doi.org/10.1111/j.2042-3292.2011.00296.xGoogle Scholar
Houpt, K, Houpt, T and Johnson, J 2001 The effect of exercise deprivation on the behaviour and physiology of straight stall con-fined pregnant mares. Animal Welfare 10: 257–267Google Scholar
Kamphaus, RW and Frick, PJ 2005 Clinical Assessment of Child and Adolescent Personality and Behavior, Second Edition. Springer: New York, NY, USAGoogle Scholar
Keating, SCJ, Thomas, A, Flecknell, P 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/jour-nal.pone.0044437Google ScholarPubMed
Knierim, U and Winckler, C 2009 On-farm welfare assessment in cattle: validity, reliability and feasibility issues and future per-spectives with special regard to the Welfare Quality® approach. Animal Welfare 18: 451–458Google Scholar
Knubben, JM, Furst, A, Gygax, L and Stauffacher, M 2008 Bite and kick injuries in horses: prevalence, risk factors and pre-vention. Equine Veterinary Journal 40: 219–223. http://dx.doi.org/10.2746/042516408X253118CrossRefGoogle Scholar
Kutasi, O, Balogh, N, Lajos, Z, Nagy, K and Szenci, O 2011 Diagnostic approaches for the assessment of equine chronic pul-monary disorders. Journal of Equine Veterinary Science 31: 400–410. http://dx.doi.org/10.1016/j.jevs.2011.03.018CrossRefGoogle Scholar
Langford, DJ, Bailey, AL, Chanda, ML, Clarke, SE, Drummond, TE, Echols, S, Glick, S, Ingrao, J, Klassen-Ross, T, Lacroix-Fralish, ML, Matsumiya, L, Sorge, RE, Sotocinal, SG, Tabaka, JM, Wong, D, van den Maagdenberg, AMJM, Ferrari, MD, Craig, KD and Mogil, JS 2010 Coding of facial expressions of pain in the laboratory mouse. Nature Methods 7:447–449. http://dx.doi.org/10.1038/nmeth.1455Google ScholarPubMed
Lansade, L, Bouissou, M and Erhard, H 2008a Reactivity to isolation and association with conspecifics: a temperament trait stable across time and situations. Applied Animal Behaviour Science 115: 355–373. http://dx.doi.org/10.1016/j.applanim.2007.03.003Google Scholar
Lansade, L, Bouissou, M and Erhard, HW 2008b Fearfulness in horses: a temperament trait stable across time and situations. Applied Animal Behaviour Science 115: 355–373. http://dx.doi.org/10.1016/j.applanim.2007.03.003CrossRefGoogle Scholar
Leeb, C, Henstridge, C, Dewhurst, K and Bazeley, K 2003 Welfare assessment of working donkeys: assessment of the impact of an animal healthcare project in West Kenya. Animal Welfare 12: 689–694Google Scholar
Leiner, L and Fendt, M 2011 Behavioural fear and heart rate responses of horses after exposure to novel objects: effects of habituation. Applied Animal Behaviour Science 131: 104–109. http://dx.doi.org/10.1016/j.applanim.2011.02.004Google Scholar
Le Scolan, N, Hausberger, M and Wolff, A 1997 Stability over situations in temperamental traits of horses as revealed by exper-imental and scoring approaches. Behavioural Processes 41: 257–266. http://dx.doi.org/10.1016/S0376-6357(97)00052-1Google Scholar
Maros, K, Boross, B and Kubinyi, E 2010 Approach and follow behaviour: possible indicators of the human-horse relationship. Interaction Studies 3: 410–427. http://dx.doi.org/10.1075/is.11.3.05marGoogle Scholar
Martin, P and Bateson, P 2007 Measuring Behaviour: An Introductory Guide, Third Edition. Cambridge University Press: Cambridge, USA. http://dx.doi.org/10.1017/CBO9780511810893Google Scholar
Mason, G 1991 Stereotypies: a critical review. Animal Behaviour 41: 1015–1037. http://dx.doi.org/10.1016/S0003-3472(05)80640-2CrossRefGoogle Scholar
Mason, G and Mendl, M 1993 Why is there no simple way of measuring animal welfare? Animal Welfare 2: 301–319Google Scholar
McBride, S and Hemmings, A 2009 A neurologic perspective of equine stereotypy. Journal of Equine Veterinary Science 29: 10–16. http://dx.doi.org/10.1016/j.jevs.2008.11.008Google Scholar
McDonnell, S 2002 Behaviour of horses. In: Jensen, P (ed) The Ethology of Domestic Animals pp 119–129. CABI Publishing: New York, USA. http://dx.doi.org/10.1079/9780851996028.0119Google Scholar
McGreevy, PD, Cripps, PJ, French, NP, Green, LE and Nicol, C 1995 Management factors associated with stereotypic and redi-rected behaviour in the Thoroughbred horse. Equine Veterinary Journal 27: 86–91. http://dx.doi.org/10.1111/j.2042-3306.1995.tb03041.xGoogle ScholarPubMed
Mejdell, C and BØe, K 2005 Responses to climatic variables of horses housed outdoors under Nordic winter conditions. Canadian Journal of Animal Science 85: 301–308. http://dx.doi.org/10.4141/A04-066Google Scholar
Mekuria, S and Abebe, R 2010 Observation on major welfare problems of equine in Meskan district, Southern Ethiopia. Livestock Research for Rural Development 22 (Article #48). http://www.Irr d.org/Irrd22/3/meku22048.htmGoogle Scholar
Mendl, M, Burman, OHP and Paul, ES 2010 An integrative and functional framework for the study of animal emotion and mood. Proceedings of The Royal Society Biological Sciences 277: 2895–2904. http://dx.doi.org/10.1098/rspb.2010.0303CrossRefGoogle Scholar
Mills, DS and Riezebos, M 2005 The role of the image of a con-specific in the regulation of stereotypic head movements in the horse. Applied Animal Behaviour Science 91: 155–165. http://dx.doi.org/10.1016/j.applanim.2004.08.027CrossRefGoogle Scholar
Minero, M, Dalla Costa, E, Lebelt, D, Stucke, D, Canali, E and Leach, M 2013 Development of a facial expressions pain scale in horses undergoing routine castration. 9th International Equitation Science Conference p 36. 31 July-4 August 2012, Delaware, USAGoogle Scholar
Minero, M, Tosi, MV, Canali, E and Wemelsfelder, F 2009 Quantitative and qualitative assessment of the response of foals to the presence of an unfamiliar human. Applied Animal Behaviour Science 116: 74–81. http://dx.doi.org/10.1016/j.applan-im.2008.07.001Google Scholar
Minka, NS and Ayo, JO 2007 Effects of shade provision on some physiological parameters, behavior and performance of pack don-keys (Equinus asinus) during the hot-dry season. Journal of Equine Science 18: 39–46. http://dx.doi.org/10.1294/jes.18.39Google Scholar
Momozawa, Y, Ono, T, Sato, F, Kikusui, T, Takeuchi, Y, Mori, Y and Kusunose, R 2003 Assessment of equine temperament by a questionnaire survey to caretakers and evaluation of its reliability by simultaneous behavior test. Applied Animal Behaviour Science 84: 127–138. http://dx.doi.org/10.1016/j.applanim.2003.08.001CrossRefGoogle Scholar
Murray, LMA, Byrne, K and D’Eath, RB 2013 Pair-bonding and companion recognition in domestic donkeys, Equus asinus. Applied Animal Behaviour Science 143: 67–74. http://dx.doi.org/10.1016/j.applanim.2012.11.005Google Scholar
Napolitano, F, De Rosa, G, Braghieri, A, Grasso, F, Bordi, A and Wemelsfelder, F 2008 The qualitative assessment of responsiveness to environmental challenge in horses and ponies. Applied Animal Behaviour Science 109: 342–354. http://dx.doi.org/10.1016/j.applanim.2007.03.009CrossRefGoogle Scholar
Neijenhuis, F, De Graaf-Roelfsema, E, Wesselink, H, Van Reenen, C and Visser, EK 2011 Towards a welfare monitoring system for horses in the Netherlands: prevalence of several health matters. In: van Dierendonck M, de Cocq P and Visser E (eds), 7th International Equitation Science Conference: Equitation Science: Principles and Practice: Science at Work p 80. 27-29 October 2011, Hooge Mierde, The NetherlandsGoogle Scholar
Ninomiya, S and Kusunose, R 2004 Effects of feeding methods on eating frustration in stabled horses. Animal Science Journal 75:465–469. http://dx.doi.org/10.1111/j.1740-0929.2004.00214.xGoogle Scholar
Ninomiya, S, Sato, S and Kusunose, R 2007a A note on a behavioural indicator of satisfaction in stabled horses. Applied Animal Behaviour Science 106: 184–189. http://dx.doi.org/10.1016/j.applanim.2006.06.011Google Scholar
Ninomiya, S, Sato, S and Sugawara, K 2007b Weaving in sta-bled horses and its relationship to other behavioural traits. Applied Animal Behaviour Science 106: 134–143. http://dx.doi.org/10.1016/j.applanim.2006.06.014CrossRefGoogle Scholar
Olmos, G, Burden, F and Gregory, N 2010 An innovative approach for better understanding the signs of pain in donkeys: the associations of pain-related pathology with clinical and behav-ioural indicators. The 6th International Colloquium on Working Equids: Learning from Others p 407. 29 November-2 December 2010, New Delhi, IndiaGoogle Scholar
Patterson-Kane, E, Hunt, M and Harper, D 2002 Rats demand social contact. Animal Welfare 11: 327–332Google Scholar
Pearson, RA and Ouassat, M 1996 Estimation of the liveweight and body condition of working donkeys in Morocco. Veterinary Record 138: 229–233. http://dx.doi.org/10.1136/vr.138.10.229CrossRefGoogle ScholarPubMed
Pedersen, GR and Ladewig, J 2004 The influence of bedding on the time horses spend recumbent. Journal of Equine Veterinary Science 24: 153–158. http://dx.doi.org/10.1016/j.jevs.2004.03.013Google Scholar
Pedersen, LJ, Jensen, MB, Hansen, SW, Munksgaard, L, Ladewig, J and Matthews, L 2002 Social isolation affects the motivation to work for food and straw in pigs as measured by operant conditioning techniques. Applied Animal Behaviour Science 77: 295–309. http://dx.doi.org/10.1016/S0168-1591(02)00066-7CrossRefGoogle Scholar
Pond, W, Bazer, F and Rollin, B 2011 Animal Welfare in Animal Agriculture: Husbandry, Stewardship, and Sustainability in Animal Production, First Edition. CRC Press: Boca Raton, USAGoogle Scholar
Popescu, S and Diugan, E-A 2013 The relationship between behavioral and other welfare indicators of working horses. Journal of Equine Veterinary Science 33: 1–12. http://dx.doi.org/10.1016/j.jevs.2012.04.001Google Scholar
Pritchard, J, Barr, A and Whay, H 2007 Repeatability of a skin tent test for dehydration in working horses and donkeys. Animal Welfare 16: 181–183Google Scholar
Pritchard, J, Barr, ARS and Whay, HR 2006 Validity of a behavioural measure of heat stress and a skin tent test for dehy-dration in working horses and donkeys. Equine Veterinary Journal 38: 433–438. http://dx.doi.org/10.2746/042516406778400646CrossRefGoogle Scholar
Pritchard, J, Burn, C, Barr, A and Whay, H 2008 Validity of indicators of dehydration in working horses: a longitudinal study of changes in skin tent duration, mucous membrane dryness and drinking behaviour. Equine Veterinary Journal 40: 558–564. http://dx.doi.org/10.2746/042516408X297462CrossRefGoogle ScholarPubMed
Pritchard, JC, Lindberg, AC, Main, DCJ and Whay, HR 2005 Assessment of the welfare of working horses, mules and donkeys, using health and behaviour parameters. Preventive Veterinary Medicine 69: 265–283. http://dx.doi.org/10.1016/j.pre-vetmed.2005.02.002CrossRefGoogle ScholarPubMed
Raabymagle, P and Ladewig, J 2006 Lying behavior in horses in relation to box size. Journal of Equine Veterinary Science 25: 502–504Google Scholar
Rault, J-L 2012 Friends with benefits: social support and its rele-vance for farm animal welfare. Applied Animal Behaviour Science 136: 1–14. http://dx.doi.org/10.1016/j.applanim.2011.10.002CrossRefGoogle Scholar
Reavell, D 1999 Measuring and estimating the weight of horses with tapes, formulae and by visual assessment. Equine Veterinary Education 11: 314–317. http://dx.doi.org/10.1111/j.2042-3292.1999.tb01562.xGoogle Scholar
Ross, M and Dyson, S 2010 Diagnosis and Management of Lameness in the Horse, Second Edition. Elsevier Saunders: Missouri, USAGoogle Scholar
Rushen, J, Butterworth, A and Swanson, JC 2011 Animal behavior and well-being symposium. Farm animal welfare assur-ance: science and application. Journal of Animal Science 89: 1219–1228. http://dx.doi.org/10.2527/jas.2010-3589Google Scholar
Rutherford, KMD, Donald, RD, Lawrence, AB and Wemelsfelder, F 2012 Qualitative Behavioural Assessment of emotionality in pigs. Applied Animal Behaviour Science 139: 218–224. http://dx.doi.org/10.1016/j.applanim.2012.04.004Google ScholarPubMed
Sarrafchi, A and Blokhuis, HJ 2013 Equine stereotypic behav-iors: causation, occurrence, and prevention. Journal of Veterinary Behavior: Clinical Applications and Research 8: 1–9. http://dx.doi.org/10.1016/j.jveb.2013.04.068Google Scholar
Seaman, S, Davidson, H and Waran, N 2002 How reliable is temperament assessment in the domestic horse (Equus caballus)? Applied Animal Behaviour Science 78: 175–191. http://dx.doi.org/10.1016/S0168-1591(02)00095-3CrossRefGoogle Scholar
SØndergaard, E and Halekoh, U 2003 Young horses’ reactions to humans in relation to handling and social environment. Applied Animal Behaviour Science 84: 265–280. http://dx.doi.org/10.1016/j.applanim.2003.08.011Google 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 lab-oratory rat via facial expressions. Molecular Pain 7: 55. http://dx.doi.org/10.1186/1744-8069-7-55Google Scholar
Taylor, PM, Pascoe, PJ and Mama, KR 2002 Diagnosing and treating pain in the horse. Where are we today? The Veterinary Clinics of North America. Equine Practice 18: 1–19. http://dx.doi.org/10.1016/S0749-0739(02)00009-3Google Scholar
Van Loon, J, Back, W, Hellebrekers, LJ, van Weeren, PR, Loon, JPAM and Van Weeren, V 2010 Application of a com-posite pain scale to objectively monitor horses with somatic and visceral pain under hospital conditions. Journal of Equine Veterinary Science 30: 641–649. http://dx.doi.org/10.1016/j.jevs.2010.09.011Google Scholar
Vervaecke, H, Boydens, M, De Nil, M and Laevens, H 2011 Pilot study on the occurrence of pressure marks on the body and mouth lesions in riding horses in Flanders. In: van Dierendonck, M, de Cocq, P and Visser, E (eds) 7th International Equitation Science Conference: Equitation Science: Principles and Practice: Science at Work p 37. 27-29 October 2011, Hooge Mierde, The NetherlandsGoogle Scholar
Viñuela-Fernández, I, Jones, E, Chase-Topping, ME and Price, J 2011 Comparison of subjective scoring systems used to evaluate equine laminitis. Veterinary Journal 188: 171–177Google ScholarPubMed
Visser, EK, Reenen, CG, Van Hopster, H, Schilder, MBH, Knaap, JH, Barneveld, A and Blokhuis, HJ 2001 Quantifying aspects of young horses’ temperament: consistency of behaviour-al variables. Applied Animal Behaviour Science 74: 241–258. http://dx.doi.org/10.1016/S0168-1591(01)00177-0Google Scholar
Visser, EK, Reenen, CG, Van Werf, JTN, Van Der Schilder, MBH and Knaap, JH 2002 Heart rate and heart rate variability during a novel object test and a handling test in young horses. Physiology & Behavior 76: 289–296CrossRefGoogle Scholar
Waiblinger, S, Boivin, X, Pedersen, V, Tosi, M-V, Janczak, AM, Visser, EK and Jones, RB 2006 Assessing the human-animal relation-ship in farmed species: a critical review. Applied Animal Behaviour Science 101: 185–242. http://dx.doi.org/10.1016/j.applanim.2006.02.001CrossRefGoogle Scholar
Welfare Quality Consortium® 2009 Welfare Quality® Assessment Protocol for Cattle. Welfare Quality Consortium: Lelystad, The NetherlandsGoogle Scholar
Wemelsfelder, F 2007 How animals communicate quality of life: the qualitative assessment of behaviour. Animal Welfare 16: 25–31Google Scholar
Wemelsfelder, F 2012 Assessing pig body language: agreement and consistency between pig farmers, veterinarians, and animal activists. Journal of Animal Science 90: 3652–3665Google ScholarPubMed
Wickens, CL and Heleski, CR 2010 Crib-biting behavior in horses: a review. Applied Animal Behaviour Science 128: 1–9CrossRefGoogle Scholar
Wolff, A, Hausberger, M and Le Scolan, N 1997 Experimental tests to assess emotionality in horses. Behavioural Processes 40: 209–221Google ScholarPubMed