Hoof growth and wear of semi-feral ponies during an annual summer ‘self-trimming’ period.

The article explores hoof maintenance mechanisms in semi-feral ponies, specifically the natural process of self-trimming. This involves documenting hoof growth and wear during a self-trimming period and highlights how increased wear, not reduced growth, contributes to shorter hoof lengths.

Research Objective and Methodology

The key objective of the research is to obtain a quantitative description of hoof growth and wear during a period of ‘self-trimming’ within a semi-feral pony population. In order to achieve this, the researchers:

• Selected a sample of 40 semi-feral ponies.
• Measured the hoof length, growth, and wear during a ‘self-trimming’ period from June through September in 2005.

Outcomes of the Research

The findings of the research were as follows:

• For front hooves, the average lengths measured in July, August, and September were significantly shorter compared to June.
• In the case of hind hooves, the average length in August was significantly shorter than in June, July, and September.
• Increased rate of wear, rather than a decrease in growth rate, was the major factor contributing to shorter hoof lengths.
• The cumulative wear, expressed as a percentage of the June baseline hoof length, ranged from 21-57% (average 38%) for the front hooves and 12-46% (average 32%) for the hind hooves.

Research Conclusion

The research concluded that significant cracking, tearing, and increased wear, known as ‘self-trimming,’ is observable in horse herds maintained under natural environmental and social conditions. This research provides quantitative support of the anecdotal notion of ‘self-trimming’ contributing to the natural self-maintenance of equine hooves. The authors do note that their study focuses on just one herd, indicating that further research may be necessary to determine if similar mechanisms are at play in other equine populations.