Düwel D, Reisenleiter R
Hoechst AG, Helminthologie, Frankfurt, Main.
Angew Parasitol. 1990 Nov;31(4):211-7.
Bulls artificially infected with a varying number of metacercariae of Fasciola hepatica were kept under uniform, standardized laboratory conditions. 6 months after the infection the daily range of variation and the distribution of the Fasciola eggs in the faeces were determined 3 times a day (morning, noon and afternoon) over two test periods, each of 5 days. This test, carried out in over 800 individual faeces samples, showed that the excretion of Fasciola eggs over a period of several days fluctuates considerably within one animal and within one infection group; the excretion of Fasciola eggs over one day varies widely at different times in each animal and also in each infection group; the distribution of Fasciola eggs in the faeces is always irregular within one day and also over several days in all animals. The variations demonstrated here must be taken into consideration when assessing the results of coproscopical diagnosis because studies of the faeces carried out on a single occasion can lead to completely incorrect conclusions being drawn.
将不同数量的肝片吸虫囊蚴人工感染公牛，并将它们置于统一、标准化的实验室条件下。感染6个月后，在两个为期5天的测试期内，每天分三次（上午、中午和下午）测定粪便中肝片吸虫卵的每日变化范围和分布情况。这项在800多个个体粪便样本上进行的测试表明，在几天的时间里，同一动物和同一感染组内肝片吸虫卵的排泄量波动很大；同一动物以及每个感染组内，一天中不同时间肝片吸虫卵的排泄量差异很大；在所有动物中，一天内以及几天内粪便中肝片吸虫卵的分布始终是不规则的。在评估粪便检查诊断结果时，必须考虑到这里所显示的变化情况，因为单次粪便检查可能会得出完全错误的结论。
