Shimizu S, Nojiri K, Matsunaga N, Yamane I, Minami T
National Institute of Animal Health, 305-0856, Tsukuba, Japan.
Vet Parasitol. 2000 Sep 20;92(2):129-38. doi: 10.1016/s0304-4017(00)00278-8.
The effectiveness of the pour-on formulation of flumethrin was tested on grazing cattle. Flumethrin was applied once a month from April to October from 1990 to 1995 to cattle grazing in the Aso area of Kumamoto Prefecture in Japan. Both the number of ticks in the field and the number of ticks feeding on cattle decreased remarkably in relation to the number of years flumethrin was applied. Ticks in the field were not detected in 1994 and 1995, and ticks feeding on cattle decreased to 4% in 1995. Mortality due to Theileria sergenti infection also decreased significantly after more than 3 years of flumethrin pour-on application, although overall mortality did not change. At the end of the trial the incidence of T. sergenti had decreased to one-fifth of the pretrial value, although total incidence of disease had not changed. These results indicated that multiple-year seasonal application of flumethrin pour-on to grazing cattle effectively decreased the number of ticks and decreased both mortality and incidence of T. sergenti.
氟氯氰菊酯浇泼剂对放牧牛的效果进行了测试。1990年至1995年期间，从4月至10月每月对日本熊本县阿苏地区放牧的牛施用一次氟氯氰菊酯。与施用氟氯氰菊酯的年份数相关，野外蜱虫数量和叮咬牛的蜱虫数量均显著减少。1994年和1995年未检测到野外蜱虫，1995年叮咬牛的蜱虫减少到4%。在施用氟氯氰菊酯浇泼剂三年多后，瑟氏泰勒虫感染导致的死亡率也显著降低，尽管总体死亡率没有变化。试验结束时，瑟氏泰勒虫的发病率降至试验前值的五分之一，尽管疾病总发病率没有变化。这些结果表明，对放牧牛多年季节性施用氟氯氰菊酯浇泼剂可有效减少蜱虫数量，并降低瑟氏泰勒虫的死亡率和发病率。
