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| Thomaz-Soccol,Vanete; Souza,Felipe Pohl de; Sotomaior,Cristina; Castro,Edilene Alcântara; Milczewski,Viviane; Mocelin,Giovani; Silva,Maria do Carmo Pessoa e. |
| The fecal egg count reduction test (FECRT) was used in a survey for anthelmintic resistance in 42 sheep farms, in five different regions in Paraná State, Brazil between July 1996 - July 2000. Animals with natural infection were tested. Five drugs were used individually or in combination - benzimidazole, imidazothiazole, ivermectin, milbemicina and closantel. Results showed that the prevalence of resistance to all anthelmintic was as high as 88.1% for benzimidazoles (oxfendazole), 78.6% for ivermectin, 56.4% for closantel, 38.7% for closantel + oxfendazole, 38% for levamisole, and 23.6% for moxidectin. There was multiple resistance in all tested farms. The most important infective larvae recovered from culture were Haemonchus contortus and Trichostrongylus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gastrointestinal parasite; Sheep nematode; Ovis aries; Anthelmintic resistance; FECRT. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100006 |
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