The poultry red mite (PRM), Dermanyssus gallinae, is an ectoparasite of great importance related to poultry farms worldwide. Problems associated with its control have led to the search for alternative treatments, especially using inert dust, which has recently been introduced into liquid formulations. Therefore, the objective of this work was to evaluate the acaricidal activity of a liquid diatomaceous earth (DE) preparation in the laboratory and its association with mechanical cleaning (brushing) in the field. In the laboratory it was first determined that a concentration of 10% DE would be necessary for field applications. The field experiment was conducted in a commercial poultry house. The 10% DE liquid preparation was administered in three applications and associated to mechanical cleaning. Then, 42 days after the first DE application, a population reduction of 94.7% was observed in relation to the initial population of mites. These results confirm the efficiency of DE applications in association with mechanical cleaning already adopted in poultry houses as an alternative for the control of D. gallinae, which can also contribute to avoiding mite resistance to chemical acaricides.

中文翻译：

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在家禽红螨Dermanyssus gallinae（Mesostigmata：Dermanyssidae）的管理中采用机械清洁和硅藻土液体制剂的关联。

家禽红螨（Dermanyssus gallinae），是一种与世界各地的家禽农场有关的非常重要的外寄生虫。与控制有关的问题导致人们寻找替代处理方法，特别是使用惰性粉尘，最近已将其引入液体制剂中。因此，这项工作的目的是评估实验室中液体硅藻土（DE）制剂的杀螨活性，以及​​其与现场机械清洁（刷涂）的关联。在实验室中，首先确定对于现场应用，浓度为10％的DE是必要的。田间试验在一家商业禽舍中进行。将10％DE的液体制剂分三次施用，并与机械清洁相关。然后，在首次申请DE后42天，人口减少了94。相对于最初的螨虫，观察到7％。这些结果证实了DE的应用效率以及家禽舍中已经采用的机械清洁作为控制家禽的替代方法。D. gallinae，也可以有助于避免螨虫对化学杀螨剂的抵抗。