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The veterinary quarterly1995; 17(1); 18-20; doi: 10.1080/01652176.1995.9694524

The reappearance of strongyle eggs in faeces of horses treated with pyrantel embonate.

Abstract: The reappearance of strongyle eggs in the faeces of horses treated with pyrantel embonate was studied. The horses (103) were divided in 11 groups on 8 different farms. The efficacy of pyrantel embonate against strongyles, based on egg count reduction tests, was 99.8%. Mean weekly egg counts performed between week 2 and week 9 after treatment showed that 5 weeks after treatment the egg output passed the 90% reduction level. It is concluded that strategic treatments of horses with pyrantel embonate for the prevention of strongylosis should be administered with intervals of 6 weeks.
Publication Date: 1995-03-01 PubMed ID: 7610552DOI: 10.1080/01652176.1995.9694524Google Scholar: Lookup
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  • Journal Article

Summary

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This research article examines how soon strongyle eggs reappear in horse dung after treatment with pyrantel embonate. The evidence shows the medicine has a 99.8% efficacy rate, however, egg output exceeds the 90% reduction level five weeks post-treatment. Therefore, this strategy should be implemented at six-week intervals for optimal prevention of strongylosis.

Research Methodology

  • The research was conducted on 103 horses that were divided into 11 groups across eight different farms.
  • The presence of strongyle eggs in horse dung following pyrantel embonate treatment was the main focus of the study.

Results

  • Pyrantel embonate was found to be highly effective against strongyles, as determined by egg count reduction tests, with a success rate of 99.8%.
  • Despite the high success rate, a weekly analysis of egg counts between the second and ninth week post-treatment showed that egg output passed the 90% reduction level after five weeks of treatment.

Conclusion and Recommendations

  • The study concluded that in order to prevent strongylosis in horses, strategic treatments using pyrantel embonate should be administered every six weeks. This is because the effectiveness of a single dose starts to wane after five weeks, as evidenced by the resurgence in egg count.
  • This insight can help in effective disease prevention and management in horses. Regular treatments at six-week intervals allow for a sustained reduction in egg count, preventing new adult worms from developing and resulting in an overall healthy horse population.

Cite This Article

APA
Boersema JH, Borgsteede FH, Eysker M, Saedt I. (1995). The reappearance of strongyle eggs in faeces of horses treated with pyrantel embonate. Vet Q, 17(1), 18-20. https://doi.org/10.1080/01652176.1995.9694524

Publication

ISSN: 0165-2176
NlmUniqueID: 7909485
Country: England
Language: English
Volume: 17
Issue: 1
Pages: 18-20

Researcher Affiliations

Boersema, J H
  • Utrecht University, Faculty of Veterinary Medicine, Department of Parasitology and Tropical Veterinary Medicine, The Netherlands.
Borgsteede, F H
    Eysker, M
      Saedt, I

        MeSH Terms

        • Animals
        • Feces / parasitology
        • Horses
        • Parasite Egg Count / veterinary
        • Pyrantel Pamoate / therapeutic use
        • Recurrence
        • Strongyle Infections, Equine / drug therapy
        • Strongyle Infections, Equine / etiology
        • Strongylus / drug effects
        • Strongylus / isolation & purification

        Citations

        This article has been cited 4 times.
        1. Macdonald SL, Abbas G, Ghafar A, Gauci CG, Bauquier J, El-Hage C, Tennent-Brown B, Wilkes EJA, Beasley A, Jacobson C, Cudmore L, Carrigan P, Hurley J, Beveridge I, Hughes KJ, Nielsen MK, Jabbar A. Egg reappearance periods of anthelmintics against equine cyathostomins: The state of play revisited.. Int J Parasitol Drugs Drug Resist 2023 Apr;21:28-39.
          doi: 10.1016/j.ijpddr.2022.12.002pubmed: 36543048google scholar: lookup
        2. Johnson ACB, Biddle AS. The Use of Molecular Profiling to Track Equine Reinfection Rates of Cyathostomin Species Following Anthelmintic Administration.. Animals (Basel) 2021 May 9;11(5).
          doi: 10.3390/ani11051345pubmed: 34065099google scholar: lookup
        3. Zak A, Siwinska N, Slowikowska M, Borowicz H, Kubiak K, Hildebrand J, Popiolek M, Niedzwiedz A. Searching for ivermectin resistance in a Strongylidae population of horses stabled in Poland.. BMC Vet Res 2017 Jul 3;13(1):210.
          doi: 10.1186/s12917-017-1133-1pubmed: 28673347google scholar: lookup
        4. Hodgkinson JE, Freeman KL, Lichtenfels JR, Palfreman S, Love S, Matthews JB. Identification of strongyle eggs from anthelmintic-treated horses using a PCR-ELISA based on intergenic DNA sequences.. Parasitol Res 2005 Mar;95(4):287-92.
          doi: 10.1007/s00436-004-1289-zpubmed: 15682337google scholar: lookup