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‣ Efficacy of the d-phenothrin/pyriproxyfen association against mites in naturally co-infested rabbits

Fernandes,Julio I.; Verocai,Guilherme G.; Ribeiro,Francisco A.; Melo,Raquel M.P.S.; Correia,Thaís R.; Coumendouros,Katherina; Scott,Fabio B.
Fonte: Colégio Brasileiro de Patologia Animal - CBPA; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Publicador: Colégio Brasileiro de Patologia Animal - CBPA; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/05/2013 Português
Relevância na Pesquisa
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The aim of the present study was to evaluate the efficacy of the d-phenothrin/pyriproxyfen association against Psoroptes ovis, Cheyletiella parasitivorax, and Leporacarus gibbus infestations in naturally co-infested rabbits. Twenty crossbreed (New Zealand White x California) rabbits concurrently infested by the three mite species were randomly divided in two groups. All rabbits presented with hyperemia, erythema and formation of crusts in the ear canals caused by P. ovis. Infestations by both C. parasitivorax and L. gibbus were considered asymptomatic in all animals.Ten animals were treated with a 4.4% d-phenothrin and 0.148% pyriproxyfen spray formulation until have their body surface uniformly sprayed, including external ear canals. The other ten rabbits remained untreated, serving as control group. Observations were done on days +7, +14, +21, +28, and +35 post-treatment. The d-phenothrin/pyriproxyfen association showed 100% efficacy against the three mite species and was responsible for the remission of psoroptic mange lesions on treated animals. No signs of intoxication were observed. The results indicate that d-phenothrin/pyriproxyfen spray formulation in a single application is an effective and clinically safe option for the control of different mite infestations in rabbits.

‣ Severe psoroptic mange and endoparasitism in a Nubian doe.

Lofstedt, J; White, S D; Garlick, D S; Hanna, P
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /11/1994 Português
Relevância na Pesquisa
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‣ Comparative immune responses against Psoroptes ovis in two cattle breeds with different susceptibility to mange

Sarre, Charlotte; González-Hernández, Ana; Van Coppernolle, Stefanie; Grit, Rika; Grauwet, Korneel; Van Meulder, Frederik; Chiers, Koen; Van den Broeck, Wim; Geldhof, Peter; Claerebout, Edwin
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
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The sheep scab mite, Psoroptes ovis, is a major problem in the beef cattle industry, especially in Belgian Blue (BB) cattle. This breed is naturally more predisposed to psoroptic mange but reasons for this high susceptibility remain unknown. Different immune responses could be a potential cause; thus in this study, the cutaneous immune response and in vitro cellular immune response after antigen re-stimulation were examined in naturally infested BB. Cytokine production in the skin and in circulating re-stimulated peripheral blood mononuclear cells (PBMC) demonstrated a mixed pro-inflammatory Th2/Th17 profile, with transcription of IL-4, IL-13, IL-6 and IL-17. Strong IL-17 up-regulation in the skin of BB was associated with an influx of eosinophils and other immune cells, potentially leading towards more severe symptoms. Virtually no changes in cutaneous IFN-γ transcription were detected, while there was substantial IFN-γ up-regulation in re-stimulated PBMC from infested and uninfested animals, potentially indicating a role of this pro-inflammatory cytokine in the innate immune response. In Holstein–Friesian (HF) cattle, generally more resistant to P. ovis infection, a largely similar immunologic response was observed. Differences between HF and BB were the lack of cutaneous IL-17 response in infested HF and low transcription levels of IFN-γ and high IL-10 transcription in re-stimulated PBMC from both infested and uninfested animals. Further research is needed to identify potential cell sources and biological functions for these cytokines and to fully unravel the basis of this different breed susceptibility to P. ovis.

‣ Psoroptic mange in cattle of european and indian breeds, in the state of São Paulo, Brasil. Psoroptes natalensis, hirst 1919 synonimous to P. equi var. bovis (Gerlach 1857); Sarna psoróptica em bovinos das raças européias e indianas, no estado de São Paulo, Brasil. Psoroptes natalensis hirst 1919 sinônimo de P. equi var. bovis (Gerlach 1857)

Rocha, Uriel Franco; Malheiro, Decio de Mello; Cunha, José Marcio Vieira da
Fonte: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia Publicador: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 14/12/1952 Português
Relevância na Pesquisa
49.905767%
1) — The existence of psoroptic mange in cattle from both European and Indian breeds is demonstrated for the first lime in the State of São Paulo, Brazil. 2) — When treated with baths containing sulfur, lime and sodium hydroxide, as studied by Heguito and co-workers in Uruguay, the results were satisfactory. 3) — The study of the morphology of males and pubescent females found in copulation shows that Psoroptes natalensis, Hirst 1919 is synonymous to P. equi var. bovis (Cerlach, 1857).; 1) — A sarna psoróptica dos bovinos de raças européias e indianas é referida pela primeira vez no Estado de São Paulo, nos municípios de Burí e Itapetininga. 2) — O seu tratamento póde ser eficazmente feito pelos banhos arsênico-sulfo-cálcicos, estudados no Uruguai por Heguito e colaboradores. 3) — O estudo morfológico dos machos e das fêmeas púberes encontrados em cópula mostra que P. natalensis, Hirst 1919, é sinônimo de P. equi var. bovis (Gerlach, 1857), não apenas por serem os caracteres distintivos dos machos variáveis demais para merecerem valor específico, como também por não existirem diferenças entre as fêmeas púberes de P. natalensis e P. equi var. bovis.

‣ Efficacy of the d-phenothrin/pyriproxyfen association against mites in naturally co-infested rabbits

FERNANDES, Julio Israel; VEROCAI, Guilherme Gomes; RIBEIRO, Francisco de Assis; MELO, Raquel Moreira Pires dos Santos; AZEVEDO, Tha?s Ribeiro Correia; COUMENDOUROS, Katherina; SCOTT, Fabio Barbour
Fonte: Universidade Federal do Pará Publicador: Universidade Federal do Pará
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
28.567827%
O objetivo do presente estudo foi avaliar a efic?cia da associa??o de d-fenotrina e piriproxifen no controle de infesta??es simult?neas por Psoroptes ovis, Cheyletiella parasitivorax e Leporacarus gibbus em coelhos naturalmente co-infestados. Vinte coelhos mesti?os (Nova Zel?ndia Branco x Calif?rnia) infestados simultaneamente pelas tr?s esp?cies de ?caros foram divididos aleatoriamente em dois grupos. Todos os coelhos infestados por apresentavam eritema, hiperemia e forma??o de crostas nas orelhas, causados por P. ovis. Infesta??es simult?neas por C. parasitivorax e L. gibbus foram considerados assintom?ticas em todos os animais. Dez animais foram tratados com uma formula??o spray contendo d-fenotrina a 4,4% e piriproxifen a 0,148%, pulverizando toda a superf?cie corporal de forma uniforme, incluindo a face interna das orelhas. Os outros 10 coelhos n?o foram t ratados, sendo mantidos como grupo controle. Os animais foram avaliados nos dias 7, 14, 21, 28 e 35 p?s-tratamento. A associa??o de d-fenotrina e piriproxifen foi 100% eficaz no controle das tr?s esp?cies de ?caros e foi respons?vel pela remiss?o das les?es de sarna psor?ptica nos animais tratados. N?o foram observados sinais de intoxica??o. Os resultados indicam que a formula??o spray de d-fenotrina e piriproxifen em uma ?nica aplica??o ? uma op??o clinicamente segura e eficaz no controle de infesta??es por ?caros em coelhos.; ABSTRACT: The aim of the present study was to evaluate the efficacy of the d-phenothrin/pyriproxyfen association against Psoroptes ovis...