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

The research article investigates the differences in the primary epidermal lamellae (PEL) density in the forefeet of near-term fetal feral (wild) and domesticated horses, suggesting ecological adaptations in the feet structure.

Study Overview

• The main purpose of the study was to compare the density of the primary epidermal lamellae (PEL) in fetal feral and domesticated horse forefeet.
• The PEL is an essential part of hoof anatomy integral to the horse’s foot strength and adaptability.

Methodology

• 14 fetuses of Australian feral horses and 4 fetuses of domesticated horses were collected for examination.
• The fetuses of the feral horses were obtained from culled mares, while those of the domesticated horses were gained from Thoroughbred mares that had died in utero a fortnight before the expected delivery date.
• The left forefoot from each horse was prepared for examination by freezing during dissection and data collection.
• The PEL density was calculated at different points around the foot using imaging software.

Results

• The study showed no significant difference in the PEL density at different locations of the hoof in domesticated horses.
• However, the PEL density of the feral horses showed significant variance at different points, indicating a gradual reduction from the dorsal (upper) to the palmar (lower) aspect of the foot.
• These results showed a significant difference in the PEL density between the forefeet of fetal feral and domesticated horses.

Conclusion

• The research concluded that there are indeed differences in the PEL density distribution between feral and domesticated fetal horse feet.
• The findings suggest that the feral horses may have adapted to their environment which challenges in a way that affects the density of the PEL in their feet.