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Anatomia, histologia, embryologia2006; 35(4); 221-227; doi: 10.1111/j.1439-0264.2005.00663.x

Conformation of the equine skull: a morphometric study.

Abstract: There is a lack of an established method for quantifying equine skull morphology. This study proposes a method that is valid for use on both live and deceased horses. A total of nine head measurements (skull length, cranial length, nasal length, ratio of cranial:nasal length, cranial width, zygomatic width, mandibular depth, nasal profile area, cranial profile area) and six indices (skull index, cranial index, nasal index, mandibular index, nasal profile index, cranial profile index) were recorded from 30 horses from a variety of breeds whilst the soft tissues of the head were intact. A line was drawn level with the palpable notches caudal to the caudal lacrimal process of each orbit to estimate the suture line of the nasal and frontal bones and distinguish between the neurocranium and splanchnocranium. There were positive correlations between many of the head measurements. This method also illustrated significant differences in the skull morphology of three breeds (Arabians, thoroughbreds and standardbreds).
Publication Date: 2006-07-14 PubMed ID: 16836585DOI: 10.1111/j.1439-0264.2005.00663.xGoogle Scholar: Lookup
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  • Journal Article

Summary

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This study aims to establish a new method for quantifying horse skull morphology. It was applied to 30 living and deceased horses of multiple breeds to highlight disparities and similarities in equine skull structure.

Research Methodology

The researchers conducted an intricate morphometric (measurement-related) study focused on horse skulls. Nine measurements and six indices or indices were computed for each horse in the study. The parameters studied were:

  • Skull length
  • Cranial length
  • Nasal length
  • Ratio of cranial:nasal length
  • Cranial width
  • Zygomatic width
  • Mandibular depth
  • Nasal profile area
  • Cranial profile area

The indices used were:

  • Skull index
  • Cranial index
  • Nasal index
  • Mandibular index
  • Nasal profile index
  • Cranial profile index

To separate the neurocranium and splanchnocranium, a line was drawn level to an anatomical landmark found caudal to the lacrimal process of each orbit. The study group consisted of 30 horses from different breeds, and their measurements were taken while their head soft tissues were still intact.

Findings

The results revealed numerous positive correlations among many head measurements. Another important finding was the significant differences in skull morphology among three breeds – Arabians, thoroughbreds, and standardbreds. These differences suggest that the method proposed in this study is meticulous and reliable in differentiating skull structures among different horse breeds.

Significance

The research is significant as it provides a reliable method for quantifying equine skull morphology which can be used both for live and deceased horses. It helps to understand the difference in skull structure among various breeds. The results of the study may prove beneficial for researchers in the study of equine health and anatomy, breeders, veterinarians, and others involved in the horse industry. The method proposed could potentially lead to improvements in horse care, breeding, treatment and understanding of equine diseases that impact the skull.

Cite This Article

APA
Evans KE, McGreevy PD. (2006). Conformation of the equine skull: a morphometric study. Anat Histol Embryol, 35(4), 221-227. https://doi.org/10.1111/j.1439-0264.2005.00663.x

Publication

ISSN: 0340-2096
NlmUniqueID: 7704218
Country: Germany
Language: English
Volume: 35
Issue: 4
Pages: 221-227

Researcher Affiliations

Evans, K E
  • Faculty of Veterinary Science, Gunn Building (B19), Regimental Crescent, University of Sydney, NSW, Australia.
McGreevy, P D

    MeSH Terms

    • Animals
    • Breeding
    • Cephalometry / methods
    • Cephalometry / veterinary
    • Female
    • Horses / anatomy & histology
    • Male
    • Skull / anatomy & histology

    Citations

    This article has been cited 12 times.
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