Wilkinson F C
Aust Vet J. 1985 Jan;62(1):18-20. doi: 10.1111/j.1751-0813.1985.tb06033.x.
The eradication of lice from Merino sheep with wool up to 65 mm long was achieved by spraying insecticide onto the tip of wool over the sides and back. The insecticides used were cyhalothrin and diazinon in small volumes and at high concentration. When infested sheep were sprayed with 100 ml of cyhalothrin 1,500 ppm or diazinon 36,000 ppm, no live lice were seen 23 days after treatment. When treated sheep were challenged with live lice 100 days after treatment an infestation did not establish. Cyhalothrin at a lower concentration of 1,000 ppm gave excellent control but at 500 ppm only fair control was obtained. Diazinon at 24,000 ppm gave probable eradication and at 12,000 ppm excellent control. If a practical method of applying the insecticide to the tip of wool can be developed, then this technique should provide an effective means of eradicating lice in sheep with long wool. This would greatly assist the sheep industry in controlling and eradicating sheep lice.
通过将杀虫剂喷洒到羊身体两侧及背部长度达65毫米羊毛的毛尖上，成功根除了美利奴羊身上的虱子。使用的杀虫剂是少量高浓度的氯氰菊酯和二嗪农。用100毫升1500 ppm的氯氰菊酯或36000 ppm的二嗪农对受感染的羊进行喷雾处理后，23天内未见活虱子。在处理后100天用活虱子对经处理的羊进行攻击，未发生感染。浓度为1000 ppm的氯氰菊酯能实现极佳的防治效果，但500 ppm时只能达到一般的防治效果。24000 ppm的二嗪农可能实现根除，12000 ppm时能达到极佳的防治效果。如果能开发出一种将杀虫剂应用于羊毛毛尖的实用方法，那么这项技术应能为根除长毛羊身上的虱子提供一种有效手段。这将极大地帮助养羊业控制和根除羊虱。
