Plants of the Cerrado naturally selected by grazing sheep may have potential for inhibiting development of Haemonchus contortus larva.
Trop Anim Health Prod
; 47(7): 1321-8, 2015 Oct.
Article
em En
| MEDLINE
| ID: mdl-26085457
ABSTRACT
Plant species naturally selected by sheep grazing in the Cerrado region of Brazil were assessed in vitro for activity against Haemonchus contortus. One year of observations showed the plant families in the region exhibiting greatest richness to be Fabaceae, Rubiaceae, Malpighiaceae, Bignoniaceae, Myrtaceae, and Annonaceae. Nine species commonly selected by grazing sheep showed variation in the selectivity index with respect to the dry and rainy seasons. Coproculture was conducted in five replicates of 11 treatments ivermectin, distilled water, or dehydrated leaves of nine selected plant species administered at 333.3 mg g(-1) fecal culture. The dried powder of Piptadenia viridiflora and Ximenia americana leaves significantly reduced the number of infective larvae compared to the distilled water control. These species showed efficacy of over 85 % despite low concentrations of proanthocyanidin. High-performance liquid chromatography analyses of extracts of these plants showed major peaks of UV spectra characteristic of flavonoids. Those naturally selected plant species with high antihelminthic efficacy show promise for use in diet as an alternative control of H. contortus in sheep.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças dos Ovinos
/
Poaceae
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Hemoncose
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Haemonchus
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Ração Animal
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Criação de Animais Domésticos
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Fitoterapia
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Anti-Helmínticos
Limite:
Animals
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Trop Anim Health Prod
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Brasil