An Integrated Parasite Control Framework for Ruminants

Parasites, if they are not controlled effectively, have a major impact on the productivity, health and welfare of sheep and cattle. Cattle and sheep pick up parasites, such as roundworms, whilst they graze. These parasites are normally controlled by treating the whole flock or herd with a worming medicine that either prevents infection or that kills the parasites before they cause damage. However, this type of approach to parasite control has resulted in the development of resistance to the medicines used, meaning the parasites are no longer killed by the treatment. In this project we will identify ways in which the control of parasitic diseases could be improved to reduce the impact and spread of resistance. We will focus on roundworm parasites found in the stomach and intestines of sheep, since anthelmintic resistance is prevalent in sheep roundworm populations, and it is a growing threat to the sheep industry in the UK.