Higgs A R, Morcombe P W, Love R A, Young G E
Agriculture Western Australia, Albany, Western Australia.
Aust Vet J. 1998 Jan;76(1):44-9. doi: 10.1111/j.1751-0813.1998.tb15669.x.
To compare the wettability and efficacy of diazinon dip wash made with and without the addition of zinc sulphate.
Field experiments using a shower and a plunge dip complemented by in-vitro wettability experiments.
A flock of infested sheep was divided into groups and treated in a shower dip with clear or cloudy dam water plus up to 1.5% zinc sulphate. Another infested line of sheep was treated using a plunge dip with nil or 1% zinc sulphate. In both experiments, wetting was assessed after dipping and louse counts were conducted for 9 months after treatment. Five in-vitro experiments compared the wettability of dip wash containing diazinon with up to 1.5% zinc sulphate added.
In the shower dipping experiment, live lice were found at 1 month after dipping in the cloudy water groups with 0.75%, 1.0% and 1.5% zinc sulphate and at 2 months in the 0.75% zinc sulphate group. No lice were found at subsequent inspections or at any time in the groups that were plunge dipped. Zinc sulphate decreased the amount of dip wash retained by wool staples in all in-vitro experiments (P < 0.05).
Zinc sulphate should be considered as a risk factor that could cause failure to eradicate a lice infestation. The risk can be overcome by ensuring that all sheep are saturated at dipping and that the dip wash, and any holding tanks, are agitated throughout the dipping event.
比较添加和不添加硫酸锌的二嗪农浸洗液的润湿性和功效。
采用喷淋和药浴的田间试验，并辅以体外润湿性试验。
将一群感染虱子的绵羊分成几组，用清澈或浑浊的坝水加至多1.5%的硫酸锌在喷淋药浴中进行处理。另一群感染虱子的绵羊用含0或1%硫酸锌的药浴进行处理。在这两个试验中，浸药后评估润湿性，并在处理后9个月进行虱子计数。五个体外试验比较了添加至多1.5%硫酸锌的含二嗪农浸洗液的润湿性。
在喷淋药浴试验中，在添加0.75%、1.0%和1.5%硫酸锌的浑浊水组中，浸药后1个月发现有活虱子，在添加0.75%硫酸锌的组中，2个月后发现有活虱子。在随后的检查中，药浴处理组在任何时候都未发现虱子。在所有体外试验中，硫酸锌减少了羊毛纤维保留的浸洗液量（P < 0.05）。
硫酸锌应被视为可能导致虱子感染无法根除的一个风险因素。通过确保所有绵羊在浸药时都被浸透，并且在整个浸药过程中对浸洗液和任何储存罐进行搅拌，可以克服这种风险。
