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首页> 外文期刊>Veterinary Parasitology >Declines in canine endoparasite prevalence associated with the introduction of commercial heartworm and flea preventatives from 1984 to 2007
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Declines in canine endoparasite prevalence associated with the introduction of commercial heartworm and flea preventatives from 1984 to 2007

机译：1984年至2007年间，与商业性丝虫和跳蚤预防剂的引入相关的犬内寄生虫患病率下降

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The apparent monthly prevalence of endoparasite infections was measured from 20,991 dogs that had fecal examinations performed upon presentation to the Veterinary Hospital of the University of Pennsylvania between 1984 and 2007. In the period from 1984 to 1991, the mean monthly prevalence of endoparasites was 5.32% for ascarids, 9.80% for hookworms, 9.64% for whipworms, 1.84% for tapeworms (Dipylidium caninum), 4.59% for Giardia species, and 3.04% for coccidia. Based on Student's t tests, the prevalence of ascarids (1.99%), hookworms (1.48%), whipworms (2.33%), and tapeworms (0.29%) were found to be significantly lower in the period from 2000 to 2007. Plots of the smoothed monthly averages revealed that the declines in prevalence occurred shortly after the introduction of modern heartworm and flea preventatives to the commercial market. In the latter study period, 79.8% of dogs were on monthly heartworm prevention and 74.0% were on monthly flea prevention. There were no significant differences in the prevalence of either Giardia species or coccidia species between study time periods. Overall, the findings suggest that heartworm and flea preventatives have had cascade effects on endoparasite prevalence in the population of well-cared-for dogs
机译：在1984年至2007年期间，从向宾夕法尼亚大学兽医医院提供粪便检查的20,991只狗中测出了体内寄生虫感染的每月明显流行率。在1984年至1991年期间，平均每月体内寄生虫感染率为5.32％ a虫，钩虫为9.80％，鞭虫为9.64％，tape虫（双嘧啶）为1.84％，贾第鞭毛虫为4.59％，球菌为3.04％。根据Student的t检验，在2000年至2007年期间，发现the虫病（1.99％），钩虫（1.48％），鞭虫（2.33％）和tape虫（0.29％）的患病率显着降低。平滑的每月平均数表明，流行率下降是在将现代丝虫和跳蚤预防剂引入商业市场后不久发生的。在后一个研究期间，有79.8％的狗每月预防心丝虫，有74.0％的狗每月预防跳蚤。在研究时间段之间，贾第虫属或球菌属的患病率没有显着差异。总体而言，研究结果表明，丝虫和跳蚤预防剂对精心照料的狗群中的体内寄生虫流行具有级联效应。

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