Eficácia de extratos vegetais para o controle da helmintose ovina,no Norte de Minas Gerais

=== The quick selection of nematodes resistant to anthelmintics has reduced the success of gastrointestinal helminthiasis control in small ruminants in several countries, demanding the search of new alternative treatments. Researches using plant extracts for this control have demonstrated promising...

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Bibliographic Details
Main Author: Patricia Nery Silva Souza
Other Authors: Eduardo Robson Duarte
Format: Others
Language:Portuguese
Published: Universidade Federal de Minas Gerais 2009
Online Access:http://hdl.handle.net/1843/NCAP-89YNB8
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Summary:=== The quick selection of nematodes resistant to anthelmintics has reduced the success of gastrointestinal helminthiasis control in small ruminants in several countries, demanding the search of new alternative treatments. Researches using plant extracts for this control have demonstrated promising results. The aim of this work was to evaluate anthelmintic properties against sheep nematodes from different plant species frequently found in the North of Minas Gerais, Brazil. The species Anacardium humile, Annona crassiflora, Campomanesia cambessedeana, Caryocar brasilliense, Genipa americana,Hancornia spp., Hymenaea stigonocarpa, Mangifera indica, Magoniapubescens and Tamarindus indica were tested in vitro on the larvaldevelopment of sheep trichostrongylides. Larvae of Haemonchus (68%),Strongyloides (31%) e Trichostrogylus (1%) were identified in the coproculture of the control group with distilled water. The water extract of the seeds A. crassiflora, panã, aqueous and ethanolic extracts of Caryocar brasilliense, pequi and the ethanolic extracts of Genipa americana, genipap and fruit of Mangifera indica showed efficacy (%) of 99,4, 99,8, 98,5, 100 and 100 respectively. These extracts did not differ statistically from the coproculture group treated with ivermectin (p<0.01). The results obtained in this study indicate the promising anthelmintic potential of these four vegetal species (A. crassiflora, C. brasilliense, G. americana and M. indica), present in the North Minas, as a possible alternative to synthetic anthelmintics. === A rápida seleção de nematoides resistentes a anti-helmínticos tem limitado o sucesso do controle das helmintoses gastrintestinais de pequenos ruminantes em vários paises, fomentando a busca de novas alternativas. Pesquisas utilizando extratos de plantas para esse controle têm demonstrado resultados promissores. O objetivo desse trabalho foi avaliar a atividade antihelmíntica de diferentes plantas, frequentemente encontradas no Norte de Minas Gerais, Brasil, sobre trichostrongilídeos de ovinos. As espécies Anacardium humile, Annona crassiflora, Campomanesia cambessedeana, Caryocar brasilliense, Genipa americana, Hancornia spp., Hymenaea stigonocarpa, Mangifera indica, Magonia pubescens e Tamarindus indica foram avaliadas in vitro sobre o desenvolvimento larval de trichostrongilídeos de ovinos. Foram identificadas larvas dos gêneros Haemonchus (68%), Strongyloides (31%) e Trichostrogylus (1%) nas coproculturas dos grupos controle com água destilada. O extrato aquoso de sementes de A. crassiflora,panã, aquoso e etanólico de Caryocar brasilliense, pequi e os extratosetanólicos de Genipa americana, jenipapo e de frutos de Mangifera indica apresentaram eficácias (%) de 99,4; 99,8; 98,5; 100 e 100, respectivamente. Esses extratos não diferiram estatisticamente do grupo de coproculturas tratadas com ivermectina (p<0,01). Os resultados obtidos neste estudo indicam o potencial anti-helmíntico promissor dessas quatro espécies vegetais, presentes no Norte de Minas, como uma possível alternativa aos anti-helmínticos sintéticos.