Davey R B, Ahrens E H
Am J Vet Res. 1984 May;45(5):1008-10.
The pyrethroid permethrin (25% cis to 75% trans) was sprayed on Hereford heifers infested with all parasitic stages of Boophilus microplus (Canestrini) at 0.05% and 0.1% active ingredient. At 0.05%, control was 66.7%; whereas at 0.1%, control was 93.3%. Replete females were collected daily for 28 days after treatment at both concentrations, indicating that at least some ticks treated as larvae or nymphs were able to reach repletion. The pyrethroid fenvalerate was sprayed on Hereford heifers infested with all parasitic stages of B microplus or B annulatus (Say) at 0.025% and 0.05% active ingredient. Fenvalerate was as effective as permethrin at a lower concentration. At 0.025%, control was 89.2% and 86.6% and at 0.05% was 92.5% and 90.1% for B microplus and B annulatus , respectively. Both these pyrethroids could provide adequate reduction in programs in which control is the aim; however, in an eradication program, both acaricides failed to provide the necessary reduction to achieve complete elimination.
将拟除虫菊酯氯菊酯（顺式占25%，反式占75%）以0.05%和0.1%的活性成分比例喷洒在感染微小牛蜱（Canestrini）所有寄生阶段的赫里福德小母牛身上。在0.05%的比例下，防治率为66.7%；而在0.1%的比例下，防治率为93.3%。在两种浓度处理后，每天收集饱血雌蜱，持续28天，这表明至少一些作为幼虫或若虫处理的蜱能够达到饱血状态。将拟除虫菊酯氰戊菊酯以0.025%和0.05%的活性成分比例喷洒在感染微小牛蜱或环形牛蜱（Say）所有寄生阶段的赫里福德小母牛身上。氰戊菊酯在较低浓度下与氯菊酯效果相当。对于微小牛蜱，在0.025%的比例下，防治率分别为89.2%和86.6%，在0.05%的比例下为92.5%；对于环形牛蜱，在0.025%的比例下防治率为86.6%，在0.05%的比例下为90.1%。这两种拟除虫菊酯在以防治为目标的方案中都能提供足够的蜱虫减少量；然而，在根除方案中，这两种杀螨剂都未能提供实现完全消除所需的必要减少量。
