Parasite Management for Small Ruminants in Grazing Systems

Introduction

Parasite pressure is one of the most persistent challenges for sheep and goat producers, particularly those who rely on pasture‑based systems. In Parasite Management for Small Ruminants in Grazing Systems, producers learn how grazing strategies, forage conditions, and parasite biology interact — and how to use that knowledge to improve flock health and reduce dependence on chemical dewormers. 

This webinar focuses on the growing issue of anthelmintic resistance, which has made traditional parasite‑control programs less effective over time. As more parasites present resistance in Wisconsin herds and flocks, producers need management‑based approaches that reduce exposure and slow resistance development. Gene Schriefer explains how grazing management decisions—such as pasture rest periods, forage height, and stocking density—directly affect the amount of parasite larvae animals encounter. He highlights how strategic grazing can significantly lower parasite risk without compromising forage utilization. 

The session also reviews the life cycle of common gastrointestinal parasites and how weather patterns influence pasture contamination. Understanding these patterns helps producers make better decisions about moving animals, timing grazing rotations, and protecting vulnerable groups such as lambs and kids. Schriefer also discusses when deworming is appropriate and how to use fecal egg counts to evaluate treatment effectiveness and guide future decisions. 

Producers gain practical tools they can apply immediately, including recognizing early signs of parasitism, identifying high‑risk grazing conditions, and integrating cultural, genetic, nutritional, and chemical tools into a comprehensive parasite management plan. 

Objectives

• Understand how grazing management affects parasite exposure and infection risk. 
• Recognize signs of parasitism in sheep and goats and identify high‑risk conditions. 
• Use fecal egg counts to guide treatment decisions and monitor dewormer effectiveness. 
• Incorporate integrated parasite‑management strategies to reduce resistance and protect animal health.