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Influ?ncia da desidrata??o epid?rmica sobre a efic?cia pulguicida do fipronil empregado por via t?pica em c?es / Influence of epidermal dehydration on pulguicida effectiveness of fipronil used topically in dogs

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Previous issue date: 2015-02-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The objective of the study was to evaluate the influence of epidermal dehydration on the parasiticide effective of fipronil 10% ?spot on? in dogs artificially infested with Ctenocephalides felis felis. For this, 24 Beagles were used, divided into four groups of six dogs each. The dogs on the control groups were not treated, while the dogs on the treated group I e II and III were treated with the formulation of 10% fipronil ??spot on??. The dogs on treated group I were submitted to weekly baths with neutral glycerin soap. The dogs on treated group II were submitted to 21 consecutive and daily baths with benzoyl peroxide 2,5% shampoo. Dogs treated group III were submitted to the same baths made in treated group II, however, undergo biweekly applications of lipid formulation (containing ceramides, cholesterol and fatty acids), until the end of the study. The dogs in the control group, treated group I, treated group II and treated group III were infested with 50 pairs of C. felis felis. Infestations were performed on days -2, +5, +12, +19, +26, +33, +40, +47, +54 and, on days +2, +7, +14, +21, +28, +35, +42, +49 and +56, fleas were mechanical removed and counted for evaluation. Pulicide efficacy for treated group I on days +2, +7, +14, +21, +28, +35, +42, +49 and +56, were respectively 100%; 100%; 100%; 100%; 100%; 100%; 100%; 76.25% and 72,47%. The pulicide efficacy for the treated group II, evaluated on the same days, were respectively 100%; 100%; 100%; 100%; 100%; 97.35%; 92.86%; 82.85% and 71.21%. The pulicide efficacy for the treated group III, evaluated on the same days, were respectively 100%; 100%; 100%; 100%; 100%; 100%; 99.49%; 28.23% and 27.53%. The comparative statistical analysis between the averages of live fleas, between the control and treated groups I and between the control group and treated II showed that there was a significant difference (p?0,05) for the challenges in all experimental days, after treatment. In the comparison between the control group and treated III, showed a significant difference (p?0,05) for the challenges until day 42. No more having significant difference (p?0,05) in the experimental day +49 and +56. Statistical analysis between the treated groups I and II and treated II and III showed that there was no significant difference (p?0,05) for the challenges in all experimental days. The analysis of the treaty I and III, determined that there was no significant difference (p?0,05) until day 49, a significant difference (p?0,05) on day +56. Fipronil was effective in eliminating fleas on dogs until the day + 56 with no more residual protective effect when the animals were reinfested. The induced of epidermal dehydration, does not determined changes on the efficacy or decreased the residual effect of fipronil when used in dogs subjected to exposure of populations of C. felis felis,, through weekly infestations. This fact was confirmed since the lipid formulation of applications, were not able, in turn, to determine more effective and prolonged residual effect of fipronil when used in dogs undergoing exposure populations of C. felis felis on weekly infestation. / O objetivo do trabalho foi avaliar a influ?ncia da desidrata??o epid?rmica sobre a efic?cia pulguicida do fipronil empregado por via t?pica em c?es. Foram utilizados 24 c?es da ra?a Beagle, compondo seis animais por grupo. Os c?es foram divididos em quatro grupos. Os c?es do grupo controle n?o receberam tratamento, enquanto que os c?es dos grupos tratados I, II e III receberam tratamento com formula??o de fipronil 10% ??spot on??. Os c?es do grupo tratado I foram submetidos a banhos semanais com sabonete de glicerina neutro. Os c?es do grupo tratado II foram submetidos a 21 dias de banhos consecutivos e di?rios com shampoo contendo per?xido de benzo?la 2,5%. Os c?es do grupo tratado III foram submetidos ao mesmo regime de banhos do grupo tratado II, por?m, nesses c?es, somou-se aos banhos, aplica??es quinzenais de formula??o lip?dica (contendo ceramidas, colesterol e ?cidos graxos), at? o t?rmino do estudo. Os c?es dos grupos controle, tratado I, tratado II e tratado III foram infestados com 50 casais de C. felis felis. As infesta??es foram realizadas nos dias, -2, +5, +12, +19, +26, +33, +40, +47 e +54 e, nos dias +2, +7, +14, +21, +28, +35, +42, +49 e +56, realizou-se a retirada mec?nica e contagem de pulgas para avalia??o. As efic?cias pulguicidas, para o grupo tratado I, nos dias +2, +7, +14, +21, +28, +35, +42, +49 e +56, foram, respectivamente: 100%; 100%; 100%; 100%; 100%; 100%, 100%; 76,25% e 72,47%. As efic?cias pulguicidas, para o grupo tratado II, avaliadas nos mesmos dias, foram respectivamente: 100%; 100%; 100%; 100%; 100%; 97,35%; 92,86%; 82,85% e 71,21%. As efic?cias pulguicidas para o grupo tratado III, avaliadas nos mesmos dias, foram respectivamente: 100%; 100%; 100%; 100%; 100%; 100%; 99,49% e 28,23% e 27,53%. A an?lise estat?stica comparativa entre as m?dias de pulgas vivas, entre os grupos controle e tratado I e entre o grupo controle e tratado II, demonstrou que ocorreu diferen?a significativa (p?0,05) para os desafios em todos os dias experimentais, ap?s o tratamento. J? na compara??o entre o grupo controle e tratado III, evidenciou-se diferen?a significativa (p?0,05) para os desafios at? o dia +42. N?o mais havendo diferen?a significativa (p?0,05) no dia experimental +49 e +56. A an?lise estat?stica entre os grupos tratados I e II e tratado II e III demonstrou que n?o ocorreu diferen?a significativa (p?0,05) para os desafios em todos os dias experimentais. J? a an?lise entre o tratado I e III, determinou que n?o houve diferen?a significativa (p?0,05) at? o dia +49, havendo diferen?a significativa (p?0,05) no dia +56. O estudo foi encerrado no dia +56 j? que a efic?cia do fipronil nos grupos tratados I, II e III n?o apresentou mais efeito residual de prote??o quando os animais foram reinfestados. A desidrata??o epid?rmica induzida n?o determinou altera??o na efic?cia ou diminui??o do efeito residual do fipronil quando empregados em c?es submetidos ? exposi??o de popula??es de C. felis felis,, atrav?s de infesta??es semanais. Fato esse corroborado uma vez que, as aplica??es de formula??o lip?dica, n?o foram capazes, por sua vez, de determinar maior efic?cia ou prolongamento do efeito residual do fipronil quando empregados em c?es submetidos ? exposi??o de popula??es de C. felis felis., atrav?s de infesta??es semanais

Identiferoai:union.ndltd.org:IBICT/oai:localhost:jspui/2142
Date26 February 2015
CreatorsNunes, Tiago Abrah?o Pereira
ContributorsScott, Fabio Barbour, Souza, Clarissa Pimentel de, Martins, Isabela Vilhena Freira, Fernandes, J?lio Israel, Azevedo, Tha?s Ribeiro Correia
PublisherUniversidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Ci?ncias Veterin?rias, UFRRJ, Brasil, Instituto de Veterin?ria
Source SetsIBICT Brazilian ETDs
LanguagePortuguese
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis
Formatapplication/pdf
Sourcereponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ
Rightsinfo:eu-repo/semantics/openAccess
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