Comparação de dois métodos de controle de nematódeos gastrintestinais em borregas e ovelhas de corte

Vieira, Maria Isabel Botelho; Rocha, Hélio Carlos; Ractz, Luiz Augusto Brandão; Nadal, Rogério; Moraes, Roberto Bagatini de; Oliveira, Iali da Silva

doi:10.5433/1679-0359.2008v29n4p853

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…The importance of the FAMACHA © system has been comprehensively reviewed (Van Wyk and Bath, 2002;Kaplan et al, 2004;Bath et al, 2005;Van Wyk 2005Kenyon et al, 2009) and has not only been tested in Southern Africa (Bath et al, 2001;Malan et al, 2001;Vatta et al, 2002) but also in many countries including North America and St Croix (Kaplan et al, 2004), Brazil (Sotomaior et al, 2003, Molento et al, 2004Vieira et al, 2008), the Thus sufficient parasites were being excreted onto the pasture in order for the groups to have a significant challenge and for the trial to be a good study of the effects of deworming schedules.…”

Section: Discussionmentioning

confidence: 99%

The effect of application of the FAMACHA© system on selected production parameters in sheep

Leask

Wyk

Thompson

et al. 2013

Small Ruminant Research

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Much research has gone into developing a sustainable management tool for haemonchosis, namely the FAMACHA © system, which has been validated by numerous studies worldwide. However, the financial implications on production of implementing this system have not been fully There were no significant differences in body weight gains, FAMACHA © and body condition scores amongst the three treatment regimens for ewes that did not conceive.For those that became pregnant during the trial there was a significant difference when analysed by calendar date but not when analysed by reproductive stage. There were also no significant differences between trial groups in lamb birth weight and, after slow growers had been sold, the average daily gain of the lambs born to ewes in the trial. The cost of anthelmintics was considerably lower for the FAMACHA © group. In conclusion there were no significant differences in selected production parameters when using the FAMACHA © system as opposed to other methods of anthelmintic use in a Mutton Merino flock in a semi-intensive farming system 3 and that the gestation status should be taken into account when measuring these parameters in future studies.

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Section: Discussionmentioning

confidence: 99%

The effect of application of the FAMACHA© system on selected production parameters in sheep

Leask

Wyk

Thompson

et al. 2013

Small Ruminant Research

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“…A prevalência de Haemonchus sp. e Trichostrongylus sp., nas coproculturas, foi semelhante, ao relatado por Vieira et al (2008) e Pereira et al (2008, em municípios do Rio Grande do Sul; assim como na revisão realizada por Farias et al (1997), considerando estudos realizados na região Sul do Brasil. Chandrawathani et al (1999) A maior prevalência de Strongyloides sp., relatada para o rebanho identificado como Angélica (Quadro 1), possivelmente ocorreu devido a presença de animais jovens nos grupos experimentais.…”

Section: Discussionunclassified

Resistência anti-helmíntica de nematóides gastrintestinais em ovinos, Mato Grosso do Sul

Sczesny-Moraes

Bianchin²,

Silva³

et al. 2010

Pesq. Vet. Bras.

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ABSTRACT.-Sczesny-Moraes E.A., Bianchin I., Silva K.F., Catto J. Among the methods of control of gastrointestinal worms in sheep, the use of chemicals is the most common. However, the continued, and indiscriminate, use of these products has selected populations of resistant helminths to anthelmintics, a phenomenon reported in the whole world. This study aimed to identify the species of gastrointestinal parasites and diagnose the status of anthelmintic resistance in sheep in the State of Mato Grosso do Sul Brazil. Feacal egg count reduction tests (FECRT) were performed in flocks of sixteen farms, and the seven formulations used contained the following pharmacological bases: Albendazole, Ivermectin, Levamizol, Trichlorfon, Moxidectin, Closantel and one containing the first three in association. The species identified at necropsy, in adult sheep, were: Haemonchus contortus, Trichostrongylus colubriformis, Cooperia curticei, C. punctata, C. pectinata and Oesophagostomum columbianum, in order of prevalence. The formulations containing Albendazole and Ivermectin did not show efficacy in reducing the EPG in the flocks tested, with average reductions of 0.7 and -19.6%, respectively. Closantel presented an average efficacy of 6.7%; Levamisolee, Moxidectin and Trichlorfon, 28.7, 26.8 and 65% respectively, the combination of three bases (Albendazole, Ivermectin and Levamizol), an average efficacy of 55.8 %. The average percentages of infective larvae recovered in the faecal cultures, pre and post treatment were similar, indicating that resistance to the bases tested is present in all species cited, to a greater or lesser degree. The two genera predominantly resistant are Haemonchus sp., with 86.9%, followed by Trichostrongylus sp., with an average of 47.5%, Strongyloides sp. 33.6%, Oesophagostomum sp.

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“…The results of coprocultures were similar to those found by Buzzulini et al (2007), whereby the prevalence of H. contortus was high in the states of São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul. Similarly, Vieira et al (2008) reported that the prevalence of Haemonchus ssp. and Trichostrongylus spp.…”

Section: Discussionmentioning

confidence: 91%

Resistance to monepantel in multiresistant gastrointestinal nematodes in sheep flocks in Rio Grande do Sul

Júnior¹,

Raimondo²,

Rivero³

et al. 2018

SCA

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The excessive, indiscriminate, and continued use of anthelmintic drugs as control methods favors parasite resistance, and this phenomenon has been reported in Brazil and worldwide. The current status of parasite resistance to anthelmintic drugs in sheep flocks in Rio Grande do Sul was assessed by calculating the EPG count in the stool to estimate the prevalence of resistance to the anthelmintic drugs closantel, levamisole, fenbendazole, monepantel, and moxidectin in seven properties. The animals from each flock were randomly distributed in six groups according to the anthelminthic drug used, as follows: T1, levamisole; T2, fenbendazole; T3, monepantel; T4, moxidectin; T5, closantel; and T6, control. On day zero, fecal samples were collected, and each animal was treated with one anthelminthic drug. Fecal samples were collected again after 14 days to calculate the efficacy of each active principle. Coproculture was performed using a pool of fecal samples from each group on day 0 and 14 to identify the predominant genera and prevalence of helminths. The genera identified in the coprocultures were Haemonchus, Trichostrongylus, Oesophagostomum, and Teladorsagia. All flocks developed resistance to levamisole, fenbendazole, moxidectin, and closantel. Moreover, resistance to monepantel was found in four of the seven farms. These results demonstrate the critical situation of anthelmintic resistance in sheep flocks in Rio Grande do Sul and the need to adopt other integrated control measures in addition to anthelmintic treatment.

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Comparação de dois métodos de controle de nematódeos gastrintestinais em borregas e ovelhas de corte

Cited by 9 publications

References 6 publications

The effect of application of the FAMACHA© system on selected production parameters in sheep

The effect of application of the FAMACHA© system on selected production parameters in sheep

Resistência anti-helmíntica de nematóides gastrintestinais em ovinos, Mato Grosso do Sul

Resistance to monepantel in multiresistant gastrointestinal nematodes in sheep flocks in Rio Grande do Sul

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