To evaluate the necessary time and to identify the differences among anthelmintics for the reduction of parasite eggs shed in feces, five groups of cattle were treated with moxidectin, ivermectin, levamisole phosphate, and albendazole sulphoxide. Levamisole promoted a reduction in egg count per gram (EPG-R) of 97.4% after 24 hours, moxidectin 98.3% after 36 hours, and albendazole sulphoxide 95.9% after 36 hours post- treatment. Cooperia spp. and Haemonchus spp. showed resistance to ivermectin. The results demonstrated that the diagnosis of parasite resistance in cattle can be based on a count of eggs per gram (EPG) carried out as soon as seven days after the treatment.

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ivermectin parasite resistance count

Ricardo Velludo Gomes, de Soutello Wilian Marinho Dourado, Coelho Fernando Paes, de Oliveira José Francisco, Fonzar Brenda Carla, Luquetti Renata Furlan Pereira, de Souza Maria Concei??o Zocoller, Seno Alessandro Francisco Talamini, do Amarante,.Evaluation of reduction in egg shedding of gastrointestinal nematodes in cattle following administration of anthelmintics.. 19 (3),183-5.

Ricardo Velludo Gomes, de Soutello Wilian Marinho Dourado, Coelho Fernando Paes, de Oliveira José Francisco, Fonzar Brenda Carla, Luquetti Renata Furlan Pereira, de Souza Maria Concei??o Zocoller, Seno Alessandro Francisco Talamini, do Amarante,"Evaluation of reduction in egg shedding of gastrointestinal nematodes in cattle following administration of anthelmintics." 19

Ricardo Velludo Gomes, de Soutello Wilian Marinho Dourado, Coelho Fernando Paes, de Oliveira José Francisco, Fonzar Brenda Carla, Luquetti Renata Furlan Pereira, de Souza Maria Concei??o Zocoller, Seno Alessandro Francisco Talamini, do Amarante,"Evaluation of reduction in egg shedding of gastrointestinal nematodes in cattle following administration of anthelmintics."