Anthelmintic treatment of equids: capabilities and limitations. Critical tests of nine anthelmintic agents on ponies.

This research analyses the success rate of various anthelmintic drugs on ponies, specifically focusing on their effectiveness against gastrointestinal nematodes. It observes that these drugs can successfully eliminate parasites in more than 90% of cases, without any significant difference in performance among the nine tested agents.

Studied Anthelmintic Agents

• The research carried out critical tests on nine anthelmintic agents, drugs used to eliminate parasitic worms. These tests were conducted on ponies.
• The anthelmintic agents tested were Pyrantel embonate, Oxfendazole, Mebendazole, Albendazole, Dichlorvos, Thiabendazole, Fenbendazole, Cambendazole, and Parbendazole. Each of these drugs was administered at varying dosages.
• For each anthelmintic agent, between 6 to 9 ponies were treated.

Results & Analysis

• The researchers found that there was no significant difference in the activity of the nine anthelmintic agents based on the total activity of various parasites involved.
• However, for the treatment of specific parasites such as Trichonema spp. or small strongyles, which are the most common in equids, the research found differences in activity.
• The products could be divided into three groups based on their activity against Trichonema spp; The most active being Oxfendazole and Pyrantel embonate, followed by the group with Thiabendazole, Mebendazole, Albendazole, and Cambendazole; finally, the group with Parbendazole, Fenbendazole, and Dichlorvos.
• Results for large strongyles varied. Dichlorvos and Pyrantel embonate were recommended against Strongylus spp.; Mebendazole and Dichlorvos against pinworms; Cambendazole against Strongyloïdes westeri; Pyrantel embonate, Cambendazole, and Dichlorvos against Parascaris equorum; and Dichlorvos, Mebendazole combined with Trichlorfon and Pyrantel embonate with Trichlorfon against bots.
• The research found that none of the nine anthelmintic agents tested had any activity against Trichostrongylus axei, Anoplocephala spp.

Conclusions

• The results suggest that while overall, the nine different anthelmintic agents showed similar success rates, their effectiveness against specific parasites varied to a greater degree.
• The research therefore provides valuable insights for equid healthcare and can better guide the use of specific anthelmintic agents depending on the types of parasites present.