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In order to estimate possible centres of resistance of bovine gastrointestinal helminths to ivermectin, levamisole phosphate and albendazole sulphoxide, 39 farms in the Santa Catarina Plateau (Brazil) were evaluated. In each location a mean number of 60 samples of faeces were collected from animals ...

Souza, A. P. de; Ramos, C. I.; Bellato, V.; Sartor, A. A.; Schelbauer, C. A.
Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
Ciência Rural, 2008, 38, 5, pp 1363-1367