Comparison of the cyathostomin egg reappearance times for ivermectin, moxidectin and abamectin in horses in consecutive egg count reduction tests in winter and summer over two years
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Date
2021
DOI
Open Access Location
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Publisher
New Zealand Veterinary Association
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(c) The author/s
Abstract
Shortened cyathostomin egg
reappearance periods (ERP)
serve as a warning of developing
anthelmintic resistance (Scott et
al., 2015). Efficacy is thought to
have declined more rapidly for the
later larval stages (L4) than for the
egg laying adults, so that animals
still show zero or near zero counts
for a period after treatment, but
with L4 now surviving treatment
the ERP has shortened.
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Citation
2021 Conference Proceedings of the e Equine Veterinarians Branch of the NZVA, and Equine Veterinary Nurses of the NZVNA, 2021, pp. 25 - 26 (2)