Directional asymmetry of facial and limb traits in horses and ponies

    Research output: Contribution to journalJournal Article

    4 Citations (Scopus)
    2 Downloads (Pure)

    Abstract

    Current published data on directional asymmetry (DA) in horses refer to racing Thoroughbreds. The aim of this study was to identify whether horses and ponies exhibit directionality of trait asymmetries. Eleven functional (limb) and four non-functional (facial) bilateral traits were measured on left and right sides in a cohort of 100 horses and ponies using callipers. The population was investigated as pooled data and as horse (withers height >148. cm) and pony (withers height <148. cm) sub-groups. Within the pooled data, functional traits were longer on the right for the third metacarpal (MCIII, 73%) and metatarsal (MTIII, 65%) bones and wider on the left for the forelimb proximal phalanx (54%), MCIII (40%), MTIII (51%) and hind limb proximal phalanx (55%). Dimensions of the intercarpal and tarsocrural joints were larger on the right side. Differences in DA were present between horses and ponies within non-functional traits, but not functional traits. The results suggest that DA within horses and ponies is more likely to be a species trait rather than one exclusive to racing as a result of pressures from directionally orientated training or from selective breeding strategies. ?? 2013 Elsevier Ltd.
    Original languageEnglish
    Pages (from-to)e46-e51
    Number of pages5
    JournalVeterinary Journal
    Volume198
    Issue numberSupplement 1
    DOIs
    Publication statusPublished - Dec 2013

    Fingerprint

    Facial Asymmetry
    limbs (animal)
    Horses
    Extremities
    horses
    Carpal Joints
    withers
    phalanges
    Metacarpal Bones
    Metatarsal Bones
    Forelimb
    metacarpus
    calipers
    Pressure
    Bone and Bones
    selection methods
    forelimbs
    joints (animal)
    Population

    Keywords

    • Asymmetry
    • Conformation
    • Equine
    • Laterality
    • Skeletal

    Cite this

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    title = "Directional asymmetry of facial and limb traits in horses and ponies",
    abstract = "Current published data on directional asymmetry (DA) in horses refer to racing Thoroughbreds. The aim of this study was to identify whether horses and ponies exhibit directionality of trait asymmetries. Eleven functional (limb) and four non-functional (facial) bilateral traits were measured on left and right sides in a cohort of 100 horses and ponies using callipers. The population was investigated as pooled data and as horse (withers height >148. cm) and pony (withers height <148. cm) sub-groups. Within the pooled data, functional traits were longer on the right for the third metacarpal (MCIII, 73{\%}) and metatarsal (MTIII, 65{\%}) bones and wider on the left for the forelimb proximal phalanx (54{\%}), MCIII (40{\%}), MTIII (51{\%}) and hind limb proximal phalanx (55{\%}). Dimensions of the intercarpal and tarsocrural joints were larger on the right side. Differences in DA were present between horses and ponies within non-functional traits, but not functional traits. The results suggest that DA within horses and ponies is more likely to be a species trait rather than one exclusive to racing as a result of pressures from directionally orientated training or from selective breeding strategies. ?? 2013 Elsevier Ltd.",
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    Directional asymmetry of facial and limb traits in horses and ponies. / Lesniak, Kirsty.

    In: Veterinary Journal, Vol. 198, No. Supplement 1, 12.2013, p. e46-e51.

    Research output: Contribution to journalJournal Article

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