Laboratório de Parasitologia Clínica Veterinária, Departamento de Medicina Veterinária, Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil.
Médica Veterinária autônoma, Santana do Itararé, PR, Brasil.
Rev Bras Parasitol Vet. 2022 May 27;31(2):e005422. doi: 10.1590/S1984-29612022028. eCollection 2022.
Tick control represent a great challenge to animal health. The objective of this study was to evaluate the efficacy of acaricidal compounds against Rhipicephalus microplus from dairy cattle systems in Paraná State, Brazil. Six farms (PR1-PR6) were selected, where anti-tick products were applied at fixed intervals. Two other farms that adopted alternative protocols; target selective treatment (PRS), and individual-based agroecological protocol (PRA) were also included in the trial. Fully engorged R. microplus were collected for the in vitro adult immersion test (AIT), and the egg hatch test (EHT) in all eight populations. The larval packet test (LPT) was used on PR6 and PRA tick populations. The treatment groups were composed of G1: dichlorvos 45% plus cypermethrin 5%, G2: deltamethrin 2.5%, G3: cypermethrin 15%, chlorpyriphos 25%, plus citronellal 1%, and G4: amitraz 12.5%. The efficacy at PR1 to PR6 revealed that G3 and G4 achieved moderate to high efficacy, from 75.0 to 100.0% and 73 to 98%, respectively. In the LPT, the efficacy at PR6 was 76.0, 67.0, 93.0 and 30.6%, while PRA presented 100.0, 100.0, 100.0, and 54.0%, for G1, G2, G3 and G4, respectively. Sustainable parasite control strategies are discussed.
蜱虫控制对动物健康构成了巨大挑战。本研究旨在评估巴西帕拉纳州奶牛系统中杀蜱化合物对璃眼蜱（Rhipicephalus microplus）的功效。选择了六个农场（PR1-PR6），在这些农场中，每隔固定时间使用抗蜱产品。试验还包括另外两个采用替代方案的农场：目标选择性治疗（PRS）和个体基于农业生态协议（PRA）。在所有八个群体中，通过体外成虫浸浴试验（AIT）和卵孵化试验（EHT）收集完全饱血的璃眼蜱进行试验。幼虫包被试验（LPT）仅在 PR6 和 PRA 蜱群中进行。处理组由 G1：敌敌畏 45%加氯菊酯 5%、G2：溴氰菊酯 2.5%、G3：氯菊酯 15%、毒死蜱 25%加香茅醛 1%和 G4：双甲脒 12.5%组成。PR1 到 PR6 的治疗效果表明，G3 和 G4 达到了中等至高的功效，分别为 75.0%至 100.0%和 73%至 98%。在 LPT 中，PR6 的疗效分别为 76.0%、67.0%、93.0%和 30.6%，而 PRA 则分别为 100.0%、100.0%、100.0%和 54.0%，用于 G1、G2、G3 和 G4。讨论了可持续的寄生虫控制策略。
