Evaluation of primary epidermal lamellar density in the forefeet of near-term fetal Australian feral and domesticated horses

Hampson, Brian; Laat, Melody A. de; Mills, Paul C.; Pollitt, Christopher C.

doi:10.2460/ajvr.72.7.871

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…Hampson et al. found evidence of natural selection in a variation in lamellar architecture in the same groups of hard‐substrate horses . A thicker hoof capsule may dissipate load over a larger volume of tissue.…”

Section: Discussionmentioning

confidence: 99%

The feral horse foot. Part A: observational study of the effect of environment on the morphometrics of the feet of 100Australian feral horses

et al. 2012

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The morphology of the feral horse foot appeared to be affected by the distance travelled and by the abrasive qualities and mechanical properties of the substrate under foot. There were marked differences in some conformation parameters between the feral horses in the current study and domestic horses in previous studies. Although the conformation of the feral horse foot may have some prescriptive value, concerns regarding abnormal foot anatomy warrant further investigation.

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Section: Discussionmentioning

confidence: 99%

The feral horse foot. Part A: observational study of the effect of environment on the morphometrics of the feet of 100Australian feral horses

et al. 2012

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“…Other differences in the hoof lamella between feral and domesticated horses have previously been described, revealing that feral horses’ fetuses had a higher density of PEL [ 32 ]. Interestingly, in our study, at the ends of the PDLs (abaxial), the bifurcated pattern was significantly more prominent in MJ than in MM.…”

Section: Discussionmentioning

confidence: 97%

Histological comparison of the lamellar tissue of Iberian origin breed horses created in semi-feral conditions or in an intensive system

et al. 2023

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Although the external conformation of wild horse hooves has been proposed as an ideal model for domesticated modern horses, histological signs of laminitis have been reported among them. With the hypothesis that the lamellar tissue of horses of Iberian origin raised in semi-feral is healthier than those raised in an intensive management system (stall confinement and high-calorie diet intake), the objective was to compare their lamellar tissues. Lamellar tissue samples were taken from the forelimb hoof of eight domesticated Mangalarga Marchador (MM) horses and from six semi-feral Marajoara (MJ) and Puruca (MP) horses. Primary epidermal lamella (PEL) and secondary epidermal lamella (SEL) were measured (length and width) in several regions, and their shapes were morphologically classified into different types. Breed groups were compared using analysis of variance, followed by Tukey or Dunn tests (P<0.05). Early signs of laminitis such as abnormal keratinization of the abaxial primary dermal lamella, tapered tips of the axial PELs, pointed tips of the SEL, nuclei condensation, and abnormal spatial orientation of the secondary epidermal basal cells (SELBC), were seen only in MM horses. MP horses had a greater interface of epidermis/dermis contact than MJ horses and more rounded nuclei in the round SELBC than MM horses. In agreement with the study hypothesis, semi-feral MJ and MP horses’ lamellae were classified as healthier than MM horses, which showed early signs of endocrinopathic laminitis.

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Morphological and Biomechanical Properties of Equine Laminar Junction

Faramarzi

2014

Journal of Equine Veterinary Science

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Evaluation of primary epidermal lamellar density in the forefeet of near-term fetal Australian feral and domesticated horses

Abstract: Results indicated that PEL density distribution differs between fetal feral and domesticated horse feet, suggestive of an adaptation of feral horses to environment challenges.

Cited by 4 publications

References 21 publications

The feral horse foot. Part A: observational study of the effect of environment on the morphometrics of the feet of 100Australian feral horses

The feral horse foot. Part A: observational study of the effect of environment on the morphometrics of the feet of 100Australian feral horses

Histological comparison of the lamellar tissue of Iberian origin breed horses created in semi-feral conditions or in an intensive system

Morphological and Biomechanical Properties of Equine Laminar Junction

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