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Previous issue date: 2004-05-25 / Laboratory and field trials were performed to evaluate the efficiency of Timb? root extract (Dahlstedtia pentaphylla) (Taub). Burk. (Leguminosae, Papilionoidae, Millettiedae) on samples of Boophilus microplus (Canestrini, 1887) in bovines of the Para?ba Valley region ? S?o Paulo, Brasil. The ?in vitro? trials were carried out using immersion of engorged females, and ?in vivo? on bovines in the field by means of artificial infestation. The standard dilution was made from one part of root powder and three parts of ethanol this was considered the 100% solution. To determine the more efficient solvent to extract rotenone from the root, laboratory trials were conducted on B. microplus engorged females with in three solvents: water, ethanol a.p. and acetone a.p. The laboratory trials permitted the calculation of lethal doses at 90% (LD90) and 50% (LD50) for larvae between seventh and fourtheenth days of application and efficient concentrations at 90% (EC90) and 50% (EC50) on strain local and Mozo with B. microplus engorged females. For the larvae of the local strain (Para?ba Valley Regional Hub) LD50 calculated was 1:31,37 mL and LD90 was 1:85,24 mL. The EC90 for engorged females, of the same strain was of 1:10,19 mL and the EC50 1:34,94 mL. For the engorged females on the hypersersitive strain Mozo the EC90 was 1:23,91 mL and the EC50 1:60,46 mL. The mortality of engorged females in relation to the different kinds of solvents, was analyzed. In the field, the best results (76,10% of control) were obtained three days after application of the product extracted in ethanol, in 1:10, on animals. Then gradually between the seventh and fourteenth days the products lost efficiency, there was no significant difference between treatments and the control group after 21 days. / Foram realizados testes laboratoriais e de campo para avaliar a efici?ncia do extrato de ra?zes da planta Dahlstedtia pentaphylla (Taub.) Burk., (Leguminosae, Papilionoideae, Millettiae) sobre amostras de Boophilus microplus ( Canestrini, 1887 ) de bovinos da regi?o do Vale do Para?ba e da cepa sens?vel Mozo. Os testes foram efetuados ?in vitro?, pela t?cnica de imers?o de tel?ginas e ?in vivo?, sobre bovinos no campo, ap?s infesta??o artificial. As dilui??es foram obtidas a partir da extra??o de roten?ides utilizando?se uma parte de p? das ra?zes da planta para tr?s de etanol, sendo considerada padr?o 100%. Visando determinar o solvente mais eficiente para a extra??o de roten?ides das ra?zes, conduziram-se testes laboratoriais sobre tele?ginas de B. microplus em tr?s solventes: ?gua, etanol p.a e acetona p.a. Os testes laboratoriais permitiram calcular a Dose Letal 90% (DL90) e DL50 para larvas com idade entre sete e 21 dias e a Concentra??o Eficaz 90% (CE90) e CE50 sobre tele?ginas de B. microplus das cepas local e Mozo. Para as larvas da cepa local (Polo Regional do Vale do Para?ba) a DL50 calculada foi de 1: 231,37 mL e DL90 1: 85,24 mL. A CE90 para as tele?ginas, da mesma cepa, foi de 1:10,19 mL e a CE50 1: 34,94 mL. Para tele?ginas da cepa sens?vel Mozo a CE90 foi de 1: 23,91 mL e a CE50, 1: 60,46 mL. Analisou-se tamb?m a mortalidade das tele?ginas frente aos diferentes solventes. No campo os melhores resultados obtidos (76,10% de controle) foram obtidos tr?s dias ap?s a aplica??o do produto extra?do em etanol, na dilui??o 1: 10, sobre os animais. A partir da? gradualmente nos dias sete e quatorze os produtos foram perdendo efici?ncia, n?o apresentando mais diferen?a significativa entre os tratamentos e o grupo controle no dia +21.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:jspui/1822 |
| Date | 25 May 2004 |
| Creators | PEREIRA, Jos? Roberto |
| Contributors | Famadas, K?tia Maria, Scott, F?bio Babour, Borba, H?lcio Resende, Famadas, K?tia Maria, Cabral, Marise Maleck de Oliveira, Bittencourt, V?nia Rita Elias Pinheiro |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Ci?ncias Veterin?rias, UFRRJ, Brasil, Instituto de Veterin?ria |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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