Resistência anti-helmíntica em rebanhos caprinos no Estado do Ceará

Vieira, L. S.; Cavalcante, A. C. R.

doi:10.1590/s0100-736x1999000300002

Cited by 43 publications

(26 citation statements)

References 21 publications

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“…In another experiment, Vieira et al (1992) demonstrated the loss of effectiveness of ivermectin and of a pre-benzimidazole (netobimin) in sheep brought from the south, raising the question of exchanges of parasitic populations among regions. In the late 90s, Vieira & Cavalcante (1999) corroborated the findings published in 1989, including results of resistance to levamisole and oxfendazole in 34 goat herds in CE. Melo et al (1998) detected resistance to ivermectin and closantel in goats and to oxfendazole and closantel in sheep.…”

Section: Northeast Regionsupporting

confidence: 83%

“…Albendazole presented higher effectiveness in goats (VIEIRA et al, 1989) only when compared to the other benzimidazoles or when compared to ivermectin, in a test carried out on sheep and goats by Pereira et al (2008); even so, its effectiveness rate in this review did not exceed 70%. Oxfendazole likewise showed effectiveness only in goats when compared to the other benzimidazoles (VIEIRA et al, 1989), or was found to be more effective than levamisole on one farm, in a study by Vieira & Cavalcante (1999). In sheep, oxfendazole was studied separately by Melo et al (2004Melo et al ( , 2009, showing low effectiveness rates over the years in CE.…”

Section: Developments In Research and The Effectiveness Of Anthelmintmentioning

confidence: 99%

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Overview of anthelmintic resistance of gastrointestinal nematodes of small ruminants in Brazil

Salgado

Santos

2016

Rev. Bras. Parasitol. Vet.

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Frequent and inappropriate use of all classes of antiparasitic drugs in small ruminants has led to failures in their effectiveness, culminating in a global problem of anthelmintic resistance. Brazil stands out as one of the world's leaders in publications about anthelmintic resistance, and for having the most numerous reports of this resistance in small ruminants in the Americas. These studies have involved mainly the fecal egg count reduction test (FECRT) and its correlation with field management practices. In vivo effectiveness testing is conducted in areas where livestock is of greater economic significance, e.g., in the South (sheep) and Northeast (goats), or is important for research and economic centers, such as the Southeast (sheep). The most widely studied species is sheep, for which the widest range of drugs is also evaluated. Despite significant advances achieved in molecular research, laboratory analyses should include knowledge about the reality in the field so that they can become feasible for the producer. Moreover, molecular studies can be underpinned by the analysis of field studies, such as the maintenance of antiparasitic effectiveness over time and the mechanisms involved in this process.Keywords: Small ruminants, anthelmintic resistance, sheep, goat, gastrointestinal nematodes. ResumoO uso frequente e inapropriado de todas as classes de antiparasitários em pequenos ruminantes levou a falhas de eficácia, culminando na problemática global de resistência anti-helmíntica. O Brasil destaca-se como sendo um dos pioneiros nas publicações com resistência anti-helmíntica no mundo e por ter o maior número de relatos em pequenos ruminantes na América. Essas pesquisas envolvem principalmente o teste da redução da contagem de ovos nas fezes (TRCOF) e sua correlação com as práticas de manejo utilizadas no campo. Os estudos de testes de eficácia in vivo localizam-se em áreas onde há maior importância dos rebanhos como nas Regiões Sul (ovinos) e Nordeste (caprinos), ou com importância em polos de pesquisa e econômicos, como a região Sudeste (ovinos). Ovina é a espécie mais estudada e com maior gama de drogas avaliadas. Mesmo com grande avanço em pesquisas moleculares, as análises laboratoriais devem envolver o conhecimento da realidade do campo para que possam se tornar viáveis ao produtor. Além disso, a análise dos estudos de campo pode nortear estudos moleculares como, por exemplo, a manutenção da eficácia das drogas ao longo dos anos e os mecanismos envolvidos em tal processo.

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Section: Northeast Regionsupporting

confidence: 83%

Section: Developments In Research and The Effectiveness Of Anthelmintmentioning

confidence: 99%

Overview of anthelmintic resistance of gastrointestinal nematodes of small ruminants in Brazil

Salgado

Santos

2016

Rev. Bras. Parasitol. Vet.

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“…Média da redução do número de ovos por grama de Quadro 1. Média da redução do número de ovos por grama de fezes (OPG) de nematóides gastrintestinais e percentual médio fezes (OPG) de nematóides gastrintestinais e percentual médio fezes (OPG) de nematóides gastrintestinais e percentual médio fezes (OPG) de nematóides gastrintestinais e percentual médio fezes (OPG) de nematóides gastrintestinais e percentual médio da eficácia de drogas anti-helmínticas em caprinos fêmeas na da eficácia de drogas anti-helmínticas em caprinos fêmeas na da eficácia de drogas anti-helmínticas em caprinos fêmeas na da eficácia de drogas anti-helmínticas em caprinos fêmeas na da eficácia de drogas anti-helmínticas em caprinos fêmeas na mesorregião do Sertão P mesorregião do Sertão P mesorregião do Sertão P mesorregião do Sertão P mesorregião do Sertão Paraibano em diferentes períodos de araibano em diferentes períodos de araibano em diferentes períodos de araibano em diferentes períodos de araibano em diferentes períodos de obser obser obser obser observação vação vação vação vação (Melo et al 1998, Vieira & Cavalcante 1999, no nordeste brasileiro (Barreto & Silva 1999). Provavelmente, esses nematóides desenvolvem resistência mais rápida, devido ao seu alto potencial biótico (Echevarria & Trindade 1989).…”

Section: Resul Resul Resul Resul Results T T T Tados E Discus Ados E Dunclassified

“…A difusão ineficiente no repasse de tecnologias e utilização terapêutica iatrogênica das drogas antiparasitárias em ruminantes tem contribuído para a resistência anti-helmíntica (RA) em várias regiões produtoras do país (Echevarria et al 1996, Vieira & Cavalcante 1999.…”

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“…O tratamento com o cloridrato de levamisol por via oral em fêmeas apresentou um percentual de eficácia de 96,0%, 97,1% e 91,0% aos 7, 14 e 21 dias após o início do tratamento e nos machos de 85,7%, 94,2% e 100%, caracterizando uma droga moderadamente efetiva nas fêmeas e nos machos altamente efetiva (GMC 1996). Dados que não corroboram com os de Melo et al (2003) e Vieira & Cavalcante (1999) que obtiveram prevalência de nematóides resistentes em caprinos aos catorze dias de 75% e 20,6% em rebanhos de caprinos do estado do Ceará.…”

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Sensibilidade dos nematóides gastrintestinais de caprinos a anti-helmínticos na mesorregião do Sertão Paraibano

Rodrigues

Athayde²,

Rodrigues³

et al. 2007

Pesq. Vet. Bras.

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Evalu-Evalu-EvaluEvalu-Evaluation of the efficacy of antihelmintics to control gastrointestinal nematodes in goats ation of the efficacy of antihelmintics to control gastrointestinal nematodes in goats ation of the efficacy of antihelmintics to control gastrointestinal nematodes in goats ation of the efficacy of antihelmintics to control gastrointestinal nematodes in goats ation of the efficacy of antihelmintics to control gastrointestinal nematodes in goats raised in the state of P raised in the state of P raised in the state of P raised in the state of P raised in the state of Paraíba araíba araíba araíba araíba.] Sensibilidade dos nematóides gastrintestinais de caprinos a anti-helmínticos na mesorregião do sertão paraibano. Pesquisa Veterinária Brasileira 27 (4) The objective was to evaluate conventional and alternative anthelminthic action on the sensibility of gastrointestinal nematodes in goats. Hundred and twenty goats of both sexes were distributed into 10 groups of 24 animals each (12 males and 12 females) and submitted to treatments of specific anthelminthic composition. The commercial drugs used were moxidectin 0.2%, albendazole, levamisol chlorhydrate, ivermectin and an aqueous extract of the purgative potato (Operculina hamiltonii). The reduction test was applied through egg counts per gram of feces and larval culture to evaluate resistance. The fecal samples were collected in the day when medication was accomplished (day base), at 7, 14 and 21 days after treatment. The following results for the reduction of Trichostrongyloidea eggs were obtained: Treatment of the females with Moxidectina reduced the egg counts to 92.8, 88.7 and 89.8%, of the males to 92.6, 96.2 and 98.1%; with Levamisol of the females to 96, 97.1 and 91%, of the males to 85.7, 94,2 and 100%; with Albendazol of the females 65, 60.3 and 75.4%, of the males 88.8, 88.8 and 55.5%; with Ivermectin of the females to 92.2, 68.6 and 70.6%, of the males to 41.7, 73.6 and 59.7%; and with the purgative potato of the females to 31.8, 34.1 and 49.4%, of the males to 61.5, 80.7 and 50%. In larval culture Haemonchus, followed by Bunostomum, Trichostrongylus, and Oesophagostomum, were identified even after treatments.

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Facing Anthelmintic Resistance in Goats

Paraud

Chartier²

2017

Sustainable Goat Production in Adverse Environments: Volume I

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Resistência anti-helmíntica em rebanhos caprinos no Estado do Ceará

Cited by 43 publications

References 21 publications

Overview of anthelmintic resistance of gastrointestinal nematodes of small ruminants in Brazil

Overview of anthelmintic resistance of gastrointestinal nematodes of small ruminants in Brazil

Sensibilidade dos nematóides gastrintestinais de caprinos a anti-helmínticos na mesorregião do Sertão Paraibano

Facing Anthelmintic Resistance in Goats

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