Evaluation of reduction in egg shedding of gastrointestinal nematodes in cattle following administration of anthelmintics

• Autor(a) principal: Soutello,Ricardo Velludo Gomes de
• Data de Publicação: 2010
• Outros Autores: Coelho,Wilian Marinho Dourado, Oliveira,Fernando Paes de, Fonzar,José Francisco, Luquetti,Brenda Carla, Souza,Renata Furlan Pereira de, Seno,Maria Conceição Zocoller, Amarante,Alessandro Francisco Talamini do
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Parasitologia Veterinária (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612010000300011
• topic: Anthelmintic; cattle; resistance; Cooperia; Haemonchus

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.