SCOPS Principles

The SCOPS principles are designed to help slow the development on sheep farms. They are based on three main drivers for resistance: The frequency of anthelmintic use on a farm - every treatment selects for any resistant parasites present in the animal. The efficacy of each treatment – the accuracy of the dose and application, together with the level of resistance present to that product. The proportion of the total worm population in the animal at the time of treatment and how quickly any surviving parasites are diluted with unselected parasites in refugia of each treatment.

SCOPS原则旨在减缓农场对羊群饲养的进展。该原则基于三个主要的抗药性驱动因素：农场中抗蠕虫药物使用的频率——每一次治疗均会选择动物体内存在的任何耐药寄生虫；每次治疗的疗效——剂量的准确性和应用精度，以及对该产品的耐药水平；治疗时动物体内总蠕虫种群的比例，以及任何幸存寄生虫如何迅速与每次治疗避难所中的非选择寄生虫稀释。