Strategic Deworming in Beef Cattle: Using Parasite Control Wisely for Maximum Return

This episode examines how beef producers can improve parasite control by using dewormers strategically rather than treating all cattle routinely. Drawing from a 2026 literature review authored by researchers at Mississippi State University, the discussion highlights how internal parasites can significantly affect cattle health and productivity, particularly in younger animals. Young calves, stockers, and developing heifers typically benefit the most from deworming because they carry heavier parasite burdens and are more susceptible to performance losses than mature cows.

The hosts explain that parasite risk varies greatly by geography, with warm, humid regions generally experiencing higher parasite pressure than drier areas. They also stress that mature cattle often develop some resilience to parasite infections, meaning routine treatment may not always provide measurable returns in older animals.

Another major focus is parasite resistance. Overusing dewormers can select for resistant parasite populations, reducing the long-term effectiveness of valuable treatment tools. The discussion emphasizes that parasite control should involve more than just selecting a product, incorporating pasture management, grazing rotations, environmental conditions, and nutritional management.

The hosts also caution that diagnostic tests such as fecal egg counts must be interpreted carefully because parasite burdens, animal performance, and test results do not always align perfectly. Working with veterinarians to develop region-specific control programs is strongly encouraged. Ultimately, the review concludes that there is no one-size-fits-all parasite management strategy. Instead, producers should focus on using dewormers at the right time, in the right animals, and only when they provide meaningful health and economic benefits, helping preserve these tools for future use.