A nationwide survey of anthelmintic treatment failure on sheep farms in Ireland

ConclusionsDue to the significant difference among the anthelmintic classes for efficacy against ‘other trichostrongyles’ along with the high level of efficacy againstNematodirus spp., a genus for which anthelmintic resistance is rarely reported, it is concluded that anthelmintic resistance was responsible for the majority of the anthelmintic treatment failures observed.
Source: Irish Veterinary Journal - Category: Veterinary Research Source Type: research