The Influence of Body Mass and Height on Equine Hoof Conformation and Symmetry.

The research article investigates the relationship between a horse’s body size, particularly its mass and height, and the dimensions of its fore hooves. It also examines the occurrence of hoof asymmetry as the horse’s body size increases.

Research Objectives

• The main objective of the research was to study the links between a horse’s body mass and height and the measurements of its fore hooves—the width of the coronet band (CBW), the width of the hoof base (HBW), the angle of the dorsal hoof wall (DHWA), and the hoof spread (HS).
• The secondary objective was to analyze if, and how, hoof asymmetry changes as horse’s body size increases.

Methods and Sample

• To conduct this study, the researchers measured the height, mass, and fore hoof dimensions of 63 horses from a riding school. All these measurements were taken within two weeks after the horses had their shoes routinely changed.
• The researchers used regression analysis to understand the relationships between body mass, height, and hoof dimensions.

Key Findings

• The researchers found that as a horse’s body mass increased, its basic hoof dimensions (CBW and HBW) also increased for both left and right hooves.
• They discovered no correlation between the horse’s height and hoof variable, indicating that body mass is a greater influence on hoof morphology.
• There was a moderate correlation between left and right DHWL, with the right DHWA being larger than the left one.
• As the left DHWA increased, the corresponding left HS decreased, leading to a more upright hoof geometry.
• The researchers also noted that both left and right hoof spreads widened as the corresponding hoof base widths increased.
• Horses that were taller and heavier had hooves that tended towards a more upright structure. However, the findings indicated a splayed left hoof compared to a more box-like or “boxy” right hoof.

Implications

• The study’s findings demonstrate that a horse’s hoof undergoes morphological adjustments, possibly due to the orientation of horn tubules, in response to increased structural loading. This is a crucial consideration for hoof practitioners.
• By understanding the factors that influence hoof shape, it might be possible to prevent or treat foot-based disorders that often cause lameness in horses more effectively.