Monitoring the avermectin and pyrantel resistance status of nematode parasites of horses in the Czech Republic

Abstract

ABSTRACT:The avermectin and pyrantel resistance of equine parasites was monitored on four farms in the Czech Republic in 2014. The aim of the testing was to investigate the anthelmintic resistance of cyathostomins and ascarids. One hundred and eighty-six horses were included in the test, 54 of which were infected by ascarids and 174 by cyathostomins. Faecal egg count reduction tests were used to assess anthelmintic resistance. The faecal egg count reduction for ascarids was within the range of 87.9% to 100% for avermectins and 100% for pyrantel embonate. Faecal egg count reduction for cyathostomins ranged from 99% to 100% for avermectins and 89.3% to 98.2% for pyrantel embonate.

Anthelmintic resistance in equine nematodes: Current status and emerging trends

“…Thus, X means that resistance was tested, but not found, and X-AR means that resistance was tested and found. Country Reference Benzimidazoles Pyrimidines Macrocyclic lactones Australia Armstrong et al (2014) X-AR X-AR X-AR Beasley et al (2015) X-AR Wilkes et al (2017) X-AR Argentina Cooper et al (2020) X X-AR Brazil Felippelli et al (2015) X-AR Canada Hearn and Peregrine (2003) X-AR Slocombe et al (2007) X X X-AR Czech Republic Bodeček et al (2018) X X-AR Denmark Schougaard and Nielsen (2007) X X-AR Estonia Lassen and Peltola (2015) X-AR Finland Näreaho et al (2011) X-AR Hautala et al (2019) X X-AR France Laugier et al (2012) …”

Total Failure of Fenbendazole to Control Strongylid Infections in Czech Horse Operations

“…BZ-resistant strongylids are pervasive in the Czech Republic. The value of the FECRT continues to decrease over time, and the incidence of individual sub-zero efficacies is increasing compared to previous studies (27)(28)(29)(30). Avoiding the use of FBZ to control strongylid infections is essential for preventing economic and health consequences.…”

“…No nationwide studies evaluating all anthelmintics registered for the control of strongylid infections have yet been performed. BZ resistance and sufficient IVM efficacy have been reported ( 27 – 29 ), but limited data on PYR ( 30 ) resistance and no data on MOX efficacy in the Czech Republic are available.…”

Results of Parasitological Monitoring of Beef Cattle Herds in the Czech Republic, With First Description of the Occurrence of Invasive Rumen Fluke Calicophoron daubneyi in Beef Herds

“…The same way, cattle parasites are understudied in Czechia in comparison with small ruminants and horses (e.g. Bodecek et al, 2018;Chroust, 1998;Kyriánová et al, 2017;Langrová et al, 2008). Published studies only focused on monitoring of cattle parasites in selected regions and none of them described the situation at the whole country level.…”