Higgs A R, Love R A, Morcombe P W
Animal Industries Division, Department of Agriculture, Albany, Western Australia.
Aust Vet J. 1994 Jul;71(7):207-10. doi: 10.1111/j.1751-0813.1994.tb03403.x.
The relative efficacy of 6 shower dip chemicals most frequently used for the treatment of sheep lice (Bovicola ovis) in Western Australia was examined. Groups of 20 sheep infested with lice were treated with products containing either alphamethrin, cyhalothrin, diazinon or diazinon plus piperonyl butoxide and rotenone, formulated as emulsifiable concentrates, and with products containing either coumaphos or magnesium fluorosilicate, formulated as wettable powders. All treatments were applied through a shower dip (Sunbeam model SSD). Inspections for lice were conducted until 9 months after dipping. No lice were found on sheep treated with the 4 emulsifiable concentrate products. In contrast, treatment with the wettable powders, which contained either coumaphos or magnesium fluorosilicate as the active ingredient, did not eradicate the lice infestations. The degree to which the fleece was wetted was assessed 20 minutes after dipping and showed that the wettable powder dips penetrated the fleece less than the emulsifiable concentrate dips. Less fluid was retained by wool staples in an in-vitro test when dip wash was made with the wettable powders. It was concluded that the degree of wetting attained at dipping was an important factor in achieving eradication of sheep lice.
研究了西澳大利亚最常用于治疗羊虱（Bovicola ovis）的6种喷淋浸渍化学品的相对疗效。将20只感染虱子的羊分组，分别用含有氯菊酯、氯氟氰菊酯、二嗪农或二嗪农加胡椒基丁醚及鱼藤酮的乳油制剂产品，以及含有蝇毒磷或氟硅酸镁的可湿性粉剂产品进行处理。所有处理均通过喷淋浸渍（阳光牌SSD型号）进行。在浸渍后9个月内对羊进行虱子检查。用4种乳油制剂产品处理的羊身上未发现虱子。相比之下，以蝇毒磷或氟硅酸镁作为活性成分的可湿性粉剂处理未能根除虱子感染。浸渍20分钟后评估羊毛被浸湿的程度，结果表明可湿性粉剂浸渍比乳油制剂浸渍穿透羊毛的程度小。在体外试验中，用可湿性粉剂配制的浸渍洗液时，羊毛纤维保留的液体较少。得出的结论是，浸渍时达到的浸湿程度是根除羊虱的一个重要因素。
