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The comparative efficacy of 3 formulations of long-acting avermectins for the control of gastrointestinal nematodes (Haemonchus placei, Cooperia spp. and, to a lesser extent, Oesophagostomum radiatum and Trichuris discolor) in Brazil, and their effect on liveweight gain in calves were investigated. ...

Costa, A. J.; Oliveira, G. P.; Arantes, T. P.; Borges, F. A.; Mendonça, R. P.; Santana, L. F.; Sakamoto, C. A. M.
A Hora Veterinária, Porto Alegre, Brazil
A Hora Veterinária, 2004, 24, 139, pp 31-34