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Shortened egg reappearance after ivermectin or moxidectin use in horses in the UK

Daniels, SP and Proudman, CJ (2016) Shortened egg reappearance after ivermectin or moxidectin use in horses in the UK The Veterinary Journal, 218. pp. 36-39.

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Abstract

This study reports ivermectin and moxidectin egg reappearance periods (ERP) from UK horses with persistently positive faecal egg counts (FEC), defined as positive FEC within the ERP of an anthelmintic posttreatment, or with FECs that remained positive after the normal ERP post-anthelmintic treatment. A selected population of UK pleasure horses deemed at high risk of strongyle infection was studied. The earliest ERP recorded after ivermectin or moxidectin, using first positive FEC, was 5 weeks. From 16 premises where moxidectin was used, five had ERP ≥12 weeks using two further metrics. For premises where moxidectin was administered to only one animal (present or tested), and evaluated as one group (n = 61), ERP was ≥10 weeks. For premises where ivermectin was used, the ERP was ≥5 weeks. Premises with only one horse (present or tested), dosed with ivermectin (n = 31), analysed as one group, demonstrated egg reappearance ≥6 weeks. These field data suggest shortened ERPs following macrocyclic lactone treatment compared to previously published values (8–10 and >13 weeks respectively) when these drugs were first marketed

Item Type: Article
Subjects : Veterinary Medicine
Authors :
NameEmailORCID
Daniels, SPUNSPECIFIEDUNSPECIFIED
Proudman, CJc.proudman@surrey.ac.ukUNSPECIFIED
Date : 14 November 2016
Identification Number : 10.1016/j.tvjl.2016.11.003
Copyright Disclaimer : © 2016 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Egg reappearance Ivermectin Moxidectin Strongyles Resistance
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 10:49
Last Modified : 18 May 2017 12:44
URI: http://epubs.surrey.ac.uk/id/eprint/829324

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