2013
DOI: 10.1590/s0100-736x2013000200008
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Evaluation of resistance in a selected field strain of Haemonchus contortus to ivermectin and moxidectin using the Larval Migration on Agar Test

Abstract: Haemonchus contortus is one of the most common and economically significant causes of disease in small ruminants worldwide, and the control programs of parasitic nematodes -including H. contortus -rely mostly on the use of anthelmintic drugs. The consequence of the use of this, as the sole sanitary strategy to avoid parasite infections, was the reduction of the efficacy of all chemotherapeutic products with a heavy selection for resistance. The widespread of anthelmintic resistance and the difficulty of its ea… Show more

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Cited by 11 publications
(9 citation statements)
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“…This and other parasites are normally controlled with chemical anthelmintic drugs (TAYLOR et al, 2013). This method helps to reduce the parasitic burden in the animals, but it has some disadvantages, including the imminent emergence of anthelmintic resistance in the parasites (MÁRQUEZ-LARA, 2003;FORTES et al, 2013). This situation a serious problem to animal health because it diminishes the efficacy of anthelmintics, and new reports of anthelmintic resistance are being recorded every year (KLAUCK et al, 2014).…”
Section: Introductionmentioning
confidence: 99%
“…This and other parasites are normally controlled with chemical anthelmintic drugs (TAYLOR et al, 2013). This method helps to reduce the parasitic burden in the animals, but it has some disadvantages, including the imminent emergence of anthelmintic resistance in the parasites (MÁRQUEZ-LARA, 2003;FORTES et al, 2013). This situation a serious problem to animal health because it diminishes the efficacy of anthelmintics, and new reports of anthelmintic resistance are being recorded every year (KLAUCK et al, 2014).…”
Section: Introductionmentioning
confidence: 99%
“…Em ovinos, o parasita mais frequente é Haemonchus contortus, causando perda de peso, anemia e até mesmo a morte de animais mais susceptíveis (Fortes et al 2013). O controle geralmente é feito empregando-se anti-helmínticos sintéticos, os quais administrados de maneira inadequada podem selecionar linhagens de parasitas resistentes (Santos et al 2012), além poluir o meio ambiente e aumentar significativamente os custos de produção (Kunsa & Abebe 2009).…”
Section: Introductionunclassified
“…Esse resultado foi semelhante ao trabalho realizado por Lucena et al 2010, em um estudo realizado em Santa Maria. O Haemonchus contortus é o principal parasita de pequenos ruminantes, sendo também o principal responsável por mortalidade, em muitas regiões do mundo (Fortes et al, 2013), incluindo a Região Sul brasileira (Sprenger et al 2013). A enterotoxemia, em ovinos, geralmente é hiperaguda e não há sinais clínicos.…”
Section: Methodsunclassified