A Comparative Study Regarding The Efficacy Of Anthelmintic Treatment For Gastrointestinal Parasitism In Sheep

The therapeutic efficacy of two medicinal products was tested on two batches of sheep, 20 each. Ivermectin (Evomec plus (R)) was administered subcutaneously (0.2 mg/kg) and albendazole (Vermitan (R) 10%), orally (7.5 mg/kg). The degree of infestation was determined using the McMaster quantitative coproscopic method, before administration and on the 7th, 14th and 21st day of the experiment. Anthelmintic efficacy (E%) and possible presence of product chemoresistance was calculated using the faecal egg count reduction test (FECRT). Eimeria spp. oocysts, larvated eggs of Strongyloides spp., morulated eggs of gastrointestinal strongyls and Dicrocelium lanceolatum eggs were observed following coproscopic examinations. The therapeutic efficacy of Evomec Plus (R) was: 90.99% (in eimeriosis), 99% (in strongyloidiasis), 99.73% (in gastrointestinal strongyle infestation) and 96.31% (in dicrocoeliasis). Vermitan (R) 10% had a variable efficacy depending on parasites: 45.8% (in eimeriosis), 99.16% (in strongyloidiasis), 99.84% (in gastrointestinal strongyle infestation) and 94.3% (in dicrocoeliasis).