Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Vet Parasitol. 2023 Sep;321:109999. doi: 10.1016/j.vetpar.2023.109999. Epub 2023 Jul 29.
This study compared selective control versus strategic control against Rhipicephalus (Boophilus) microplus, under conditions of a real dairy farm. Strategic control requires that all animals be treated with acaricide at regular pre-determined intervals. Selective control only requires treatment of infested animals and only when they are at or above a pre-determined threshold. Tick counts on animals and in pasture were performed and the susceptibility of tick populations to the different treatment methods was evaluated at the beginning and end of the study using the Larval Packet Test, Larval Immersion Test, and Adult Immersion Test. Over the four years of the study strategic control was more advantageous than the selective control as the group experienced lower tick burden on animals and in pasture, absence of skin lesions and myiases, lower operating costs, treatments concentrated in fewer months of the year and lower resistance pressure.
本研究比较了在真实奶牛场条件下，针对 Rhipicephalus（Boophilus）microplus 的选择性控制与策略性控制。策略性控制要求定期对所有动物使用杀蜱剂进行处理。选择性控制仅在感染动物达到或超过预定阈值时，才对受感染动物进行处理。在研究开始和结束时，对动物和牧场中的蜱进行计数，并使用幼虫包测试、幼虫浸浴试验和成虫浸浴试验评估蜱种群对不同处理方法的敏感性。在四年的研究中，策略性控制比选择性控制更有利，因为该组动物和牧场中的蜱载量更低，没有皮肤损伤和蝇蛆病，运营成本更低，治疗集中在一年中的几个月，抗药性压力也更低。
