Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches
With the purpose of analyzing acaricide efficacy in preparation of animal’s movement, a controlled study was carried out in a stall test, with a total of 18 acaricides (Macrociclic lactones – MLs-, Fipronil, Amidines, Synthetic Pyretroids –SP-, and mixtures with organophosphates), all of them approved for use in the Control and Eradication Campaign against Rhipicephalus (Boophilus) microplus in Uruguay. Animals were infested twice a week with 100 mg larvae of a susceptible reference strain during 25 days previous treatment. Infestations continued for a maximum period of 35 days. After treatment, animals were inspected twice a week to determine the presence of any possible viable stage of tick on the skin. Animals treated with Mixtures Cypermethrin+Ethion) and Amidines of double dosage by immersion on nine-day intervals resulted in the best option, given that animals were completely free from parasites in the shortest time. MLs (Injectable or pour-on) had an effectiveness higher than 95%. However, they could not prevent the development of any parasitic stages up to 35 days post treatment. Even though these ticks have low epidemiologic risk in spreading parasites, ML is not a good option when moving animals Animals treated with Fipronil, depending on the commercial formulation evaluated, needed between 20 and 30 days to be free from ticks, becoming a considerable option when moving animals. SPs pour-ons, Flumethrin and Alphacypermethrin with two treatments applied on 15th day intervals could not clean animals from ticks It is important to mention that the results obtained show a tendency in the behaviour of molecules. However, the study was conducted in experimental conditions and the applied methodology highly challenged the acaricide attributes. Thus, it is expectable to obtain different results on field conditions.
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Sociedad de Medicina Veterinaria del Uruguay (SMVU)
2009
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| Online Access: | https://www.revistasmvu.com.uy/index.php/smvu/article/view/156 |
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Cuore, U. Solari, M. A. Cicero, L. Trelles, A. Gayo, V. Nari, A. |
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Cuore, U. Solari, M. A. Cicero, L. Trelles, A. Gayo, V. Nari, A. Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches |
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Cuore, U. Solari, M. A. Cicero, L. Trelles, A. Gayo, V. Nari, A. |
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Cuore, U. |
| title |
Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches |
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Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches |
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Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches |
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Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches |
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Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches |
| title_sort |
evaluation of the garrapaticides currently available in uruguay for use in livestock dispatches |
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With the purpose of analyzing acaricide efficacy in preparation of animal’s movement, a controlled study was carried out in a stall test, with a total of 18 acaricides (Macrociclic lactones – MLs-, Fipronil, Amidines, Synthetic Pyretroids –SP-, and mixtures with organophosphates), all of them approved for use in the Control and Eradication Campaign against Rhipicephalus (Boophilus) microplus in Uruguay. Animals were infested twice a week with 100 mg larvae of a susceptible reference strain during 25 days previous treatment. Infestations continued for a maximum period of 35 days. After treatment, animals were inspected twice a week to determine the presence of any possible viable stage of tick on the skin. Animals treated with Mixtures Cypermethrin+Ethion) and Amidines of double dosage by immersion on nine-day intervals resulted in the best option, given that animals were completely free from parasites in the shortest time. MLs (Injectable or pour-on) had an effectiveness higher than 95%. However, they could not prevent the development of any parasitic stages up to 35 days post treatment. Even though these ticks have low epidemiologic risk in spreading parasites, ML is not a good option when moving animals Animals treated with Fipronil, depending on the commercial formulation evaluated, needed between 20 and 30 days to be free from ticks, becoming a considerable option when moving animals. SPs pour-ons, Flumethrin and Alphacypermethrin with two treatments applied on 15th day intervals could not clean animals from ticks It is important to mention that the results obtained show a tendency in the behaviour of molecules. However, the study was conducted in experimental conditions and the applied methodology highly challenged the acaricide attributes. Thus, it is expectable to obtain different results on field conditions. |
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Sociedad de Medicina Veterinaria del Uruguay (SMVU) |
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2009 |
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https://www.revistasmvu.com.uy/index.php/smvu/article/view/156 |
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AT cuoreu evaluationofthegarrapaticidescurrentlyavailableinuruguayforuseinlivestockdispatches AT solarima evaluationofthegarrapaticidescurrentlyavailableinuruguayforuseinlivestockdispatches AT cicerol evaluationofthegarrapaticidescurrentlyavailableinuruguayforuseinlivestockdispatches AT trellesa evaluationofthegarrapaticidescurrentlyavailableinuruguayforuseinlivestockdispatches AT gayov evaluationofthegarrapaticidescurrentlyavailableinuruguayforuseinlivestockdispatches AT naria evaluationofthegarrapaticidescurrentlyavailableinuruguayforuseinlivestockdispatches AT cuoreu evaluaciondelosgarrapaticidasactualmentedisponiblesenuruguayparasuutilizacionenlosdespachosdetropa AT solarima evaluaciondelosgarrapaticidasactualmentedisponiblesenuruguayparasuutilizacionenlosdespachosdetropa AT cicerol evaluaciondelosgarrapaticidasactualmentedisponiblesenuruguayparasuutilizacionenlosdespachosdetropa AT trellesa evaluaciondelosgarrapaticidasactualmentedisponiblesenuruguayparasuutilizacionenlosdespachosdetropa AT gayov evaluaciondelosgarrapaticidasactualmentedisponiblesenuruguayparasuutilizacionenlosdespachosdetropa AT naria evaluaciondelosgarrapaticidasactualmentedisponiblesenuruguayparasuutilizacionenlosdespachosdetropa |
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rev-smvu-uy-article-1562019-10-15T11:31:13Z Evaluation of the garrapaticides currently available in Uruguay for use in livestock dispatches Evaluación de los garrapaticidas actualmente disponibles en Uruguay para su utilización en los despachos de tropa Cuore, U. Solari, M. A. Cicero, L. Trelles, A. Gayo, V. Nari, A. Acaricidas Inspección de animales Rhipicephalus (Boophilus) microplus Despacho de Tropa Acaricide Animal inspection Rhipicephalus (Boophilus) microplus Moving cattle With the purpose of analyzing acaricide efficacy in preparation of animal’s movement, a controlled study was carried out in a stall test, with a total of 18 acaricides (Macrociclic lactones – MLs-, Fipronil, Amidines, Synthetic Pyretroids –SP-, and mixtures with organophosphates), all of them approved for use in the Control and Eradication Campaign against Rhipicephalus (Boophilus) microplus in Uruguay. Animals were infested twice a week with 100 mg larvae of a susceptible reference strain during 25 days previous treatment. Infestations continued for a maximum period of 35 days. After treatment, animals were inspected twice a week to determine the presence of any possible viable stage of tick on the skin. Animals treated with Mixtures Cypermethrin+Ethion) and Amidines of double dosage by immersion on nine-day intervals resulted in the best option, given that animals were completely free from parasites in the shortest time. MLs (Injectable or pour-on) had an effectiveness higher than 95%. However, they could not prevent the development of any parasitic stages up to 35 days post treatment. Even though these ticks have low epidemiologic risk in spreading parasites, ML is not a good option when moving animals Animals treated with Fipronil, depending on the commercial formulation evaluated, needed between 20 and 30 days to be free from ticks, becoming a considerable option when moving animals. SPs pour-ons, Flumethrin and Alphacypermethrin with two treatments applied on 15th day intervals could not clean animals from ticks It is important to mention that the results obtained show a tendency in the behaviour of molecules. However, the study was conducted in experimental conditions and the applied methodology highly challenged the acaricide attributes. Thus, it is expectable to obtain different results on field conditions. Para analizar el comportamiento de los garrapaticidas, en la preparación para el movimiento de los animales, se realizó un estudio controlado en prueba de establo a un total de 18 productos registrados en Uruguay para el control del Rhipicephalus (Boophilus) microplus. Los animales fueron infestados con una cepa sensible, 2 veces por semana durante 25 días previos al tratamiento con 100 mg de larvas. Posteriormente se continuó infestando hasta un máximo de 35 días. Dos veces por semana luego del tratamiento se inspeccionaron los animales con la finalidad de encontrar a nivel de piel, distintos estadios viables de garrapata. Las formulaciones en base a Mezclas y Amidinas de doble aplicación por inmersión, con 9 días de intervalo, resultaron ser la mejor opción dado que los animales estuvieron totalmente libres de parásitos entre los 10 y 14 días respectivamente. Las formulaciones en base a Lactonas Macrocíclicas tuvieron un control superior a 95%, pero no evitaron el desarrollo de garrapatas hasta 35 días post tratamiento (fin del ensayo), si bien estas garrapatas tienen bajo riesgo epidemiológico en diseminar la parasitosis, este grupo químico no es una buena opción para los Despachos de Tropa. Los animales tratados con Fipronil, dependiendo de la formulación comercial evaluada, estuvieron libres de garrapatas entre los 20 a 30 días posteriores al tratamiento, constituyéndose en una alternativa a tener en cuenta. Los piretroides sintéticos en base a Flumetrina y Alfacypermetrina (pour on) con dos tratamientos aplicados con 15 días de intervalo no lograron la limpieza de los animales. Los resultados obtenidos marcan una tendencia en el comportamiento de las moléculas, no obstante, como el estudio se realizó en condiciones experimentales y la metodología aplicada desafió al máximo las características de los garrapaticidas es de esperar que a nivel de campo los resultados puedan ser diferentes. Sociedad de Medicina Veterinaria del Uruguay (SMVU) 2009-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed article. Artículo evaluado por pares. Artigo revisado por pares. application/pdf https://www.revistasmvu.com.uy/index.php/smvu/article/view/156 Veterinaria (Montevideo); Vol. 45 No. 173-176 (2009): January-December; 23-30 Veterinaria (Montevideo); Vol. 45 Núm. 173-176 (2009): Enero-Diciembre; 23-30 Veterinaria (Montevideo); v. 45 n. 173-176 (2009): Enero-Dezembro; 23-30 1688-4809 0376-4362 spa https://www.revistasmvu.com.uy/index.php/smvu/article/view/156/94 Derechos de autor 2009 Sociedad de Medicina Veterinaria del Uruguay |