Polley L
Am J Vet Res. 1986 Aug;47(8):1686-93.
Each month for a 1-year period (October through September), equine fecal masses containing eggs of strongylid nematodes were placed outdoors on small grass plots in Saskatchewan, Canada. Thereafter, feces and grass from the plots were sampled after intervals of 1 week or longer, and the strongylid eggs and larvae recovered were counted. These observations were made over a 2-year period. Development of eggs to infective larvae occurred in all experiments, except those established in October, December, and January. Infective larvae from experiments set up in April through September survived that winter. During the summer, there was a gradual build up of infective larvae in the fecal masses, which reached a peak in August and September and then decreased into the winter. These results are discussed in the context of the control of strongylid parasites of horses on the Canadian prairie and in other areas of the world with a similar climate and similar horse management practices.
在为期1年的时间里（10月至次年9月），每月将含有圆线虫虫卵的马粪放置在加拿大萨斯喀彻温省的小草地上。此后，每隔1周或更长时间对草地的粪便和草进行采样，并对回收的圆线虫虫卵和幼虫进行计数。这些观察持续了2年。除了在10月、12月和1月进行的实验外，所有实验中虫卵都发育成了感染性幼虫。4月至9月设置的实验中的感染性幼虫存活过了那个冬天。在夏季，粪便团中的感染性幼虫逐渐积累，在8月和9月达到峰值，然后在冬季减少。本文在加拿大草原以及世界其他气候相似、马匹管理方式类似地区控制马圆线虫寄生虫的背景下讨论了这些结果。
