Practical aspects of equine parasite control: a review based upon a workshop discussion consensus.

This research article focuses on the growing concern of increased resistance to anthelmintic drugs among equine parasites and discusses the need for more sustainable and effective parasite control strategies in horses.

Context and Problem Statement

• The study is centered on the escalating problem of resistance developed by several vital equine parasites to most of the anthelmintic drugs available which has led to a reevaluation of parasite control strategies in many equine establishments.
• The researchers point out that the existing prophylactic treatments based on simple calendar-based schemes have become unreliable due to this escalating resistance.
• The article also identifies the need among veterinary equine clinicians for advice and guidance on sustainable equine parasite control strategies.

Methods of Detection and Associated Challenges

• The study emphasizes that most techniques for detecting equine helminth parasites rely on faecal analysis. Yet, very few tests have been developed for detecting resistance.
• While recent developments have led to some promising molecular and in vitro based diagnostic assays, none are currently available for veterinary practice, limiting diagnostic capabilities.
• At present, the only reliable method for detecting anthelmintic resistance is a simple faecal egg count reduction test. The authors of the paper urge clinicians to regularly perform such tests.

Managing Anthelmintic Resistance

• The concept of maintaining parasite refugia is introduced as the key to managing anthelmintic resistance. Parasite refugia refers to a population of parasites that are not exposed to, and thus not developing resistance to, anthelmintic drugs.
• This concept is discussed in the context of evolving treatment strategies, drug rotations, and pasture management.
• The authors propose that reliance needs to shift toward surveillance of parasite burdens and regular efficacy tests of drugs to ensure continued effectiveness against parasites.

Conclusions and Recommendations

• The authors succinctly state that current treatment strategies need to undergo a change in light of the rise in drug resistance among equine parasites.
• Increased reliance should be placed on constant monitoring of parasite loads along with regular drug efficacy tests to ensure treatments remain effective.
• The authors consolidate their research and recommendations from discussions held at an equine parasite workshop by the French Equine Veterinary Association (AVEF).