RESUMO
A field trial on the efficacy of 1% geraniol (Fulltec) spray against ticks has been carried out in two farms near Rabat (Morocco). Results clearly revealed that 1% geraniol has a preventive effect against Hyalomma ticks. Comparison of geraniol sprayed cows with control herd showed a reduction of mean number of ticks per animal of 98.4%, 97.3% and 91.3% at respectively day 7, 14 and 21 post-spraying. These data give evidence that the geraniol, natural product extracted from plants, could be an alternative to limit use of chemical acaricides, which efficacy is compromised by development of resistance.
Assuntos
Doenças dos Bovinos/parasitologia , Repelentes de Insetos/farmacologia , Terpenos/farmacologia , Infestações por Carrapato/veterinária , Carrapatos/efeitos dos fármacos , Ácaros e Carrapatos/efeitos dos fármacos , Monoterpenos Acíclicos , Animais , Bovinos/parasitologia , Doenças dos Bovinos/tratamento farmacológico , Repelentes de Insetos/uso terapêutico , Inseticidas/uso terapêutico , Infestações por Ácaros/tratamento farmacológico , Infestações por Ácaros/parasitologia , Infestações por Ácaros/prevenção & controle , Marrocos , Terpenos/uso terapêutico , Infestações por Carrapato/prevenção & controleRESUMO
Geraniol is a bioactive component found in Palmarosa essential oil which has previously demonstrated good repellence to cattle ticks, mosquitoes and sand flies. The toxicity of geraniol to Dermanyssus gallinae, the most economically deleterious ectoparasite of laying hens in Europe, was studied in vitro in the laboratory. Exposure of D. gallinae to 0.5, 1 and 2% concentrations of geraniol (equating approximately to 0.02, 0.04 and 0.07 mg/cm2 geraniol, respectively) over a period of 24 hours resulted in 100% mortality of D. gallinae at all doses used.
