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Injury incidence, reactivity and ease of handling of horses kept in groups: A matched case control study in four Nordic countries

Keeling, Linda and Bøe, K. E. and Christensen, Janne Winther and Hyyppä, S. and Jansson, Helena and Jørgensen, Grete H.M. and Ladewig, Jan and Mejdell, Cecilie Marie and Särkijärvi, Susanna and Søndergaard, Eva and Hartmann, Elke (2016). Injury incidence, reactivity and ease of handling of horses kept in groups: A matched case control study in four Nordic countries. Applied animal behaviour science. 185 , 59-65
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Official URL: https://doi.org/10.1016/j.applanim.2016.10.006

Abstract

There is increasing interest in keeping horses in groups, but progress is hampered by a lack of knowledge about which horses can and should be kept together. Therefore, our objective was to investigate the effect of group composition on the occurrence of injuries among horses, the ease of removing horses from groups and horses' reactivity to a fearful stimulus. Using a matched case control design, 61 groups of horses were studied in Denmark, Norway, Finland and Sweden. They were allocated into groups of similar or different age and sex or where membership changed regularly or remained stable. Injuries were recorded before mixing the horses into treatment groups, the day after mixing and four weeks later. Reactivity of horses to a moving novel object and the behaviour of a horse being removed from its group and the reactions of other group members towards this horse and the handler were evaluated. It was hypothesized that a more socially variable group composition has beneficial effects on behaviour, ease of handling and reducing reactivity whereas frequent changes in group composition has negative consequences, resulting in more injuries. We found that differences in treatment effects were mainly related to breed, rather than group composition. Icelandic horses reacted less to the movement of the novel object (P= 0.007) and approached it more afterwards (P = 0.04). They also had fewer new injuries than warmbloods following mixing (P<0.001) and fewer than all other groups 4 weeks later (P<0.01). Most new injuries after mixing were minor and recorded on the horse's head, chest, hind legs and rump. In conclusion, variations in sex and age composition of the group had little effect on injury level, reactivity and ease of handling compared to the general effect of breed. Concerns about the risk of severe injuries associated with keeping horses in groups are probably overestimated. Thus, we propose that horses can be successfully kept in groups of different sex and age composition. (C) 2016 Published by Elsevier B.V.

Authors/Creators:Keeling, Linda and Bøe, K. E. and Christensen, Janne Winther and Hyyppä, S. and Jansson, Helena and Jørgensen, Grete H.M. and Ladewig, Jan and Mejdell, Cecilie Marie and Särkijärvi, Susanna and Søndergaard, Eva and Hartmann, Elke
Title:Injury incidence, reactivity and ease of handling of horses kept in groups: A matched case control study in four Nordic countries
Series/Journal:Applied animal behaviour science (0168-1591)
Year of publishing :2016
Volume:185
Page range:59-65
Number of Pages:7
Publisher:Elsevier
Associated Programs and Other Stakeholders:Centre of Excellence in Animal Welfare Science
ISSN:0168-1591
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Agrovoc terms:horses, injurious factors, behaviour, flocks
Keywords:Horses, Behaviour, Reactivity, Injury, Welfare, Management
URN:NBN:urn:nbn:se:slu:epsilon-e-4915
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4915
Additional ID:
Type of IDID
DOI10.1016/j.applanim.2016.10.006
Web of Science (WoS)000390504700009
ID Code:15495
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Environment and Health
Deposited By: SLUpub Connector
Deposited On:05 Jun 2018 07:23
Metadata Last Modified:09 Sep 2020 14:17

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