Criteria for deworming beef cattle under ranch conditions

Area of Science:

• Veterinary Parasitology
• Livestock Management
• Agricultural Economics

Background:

• Worm infestations pose a significant challenge to cattle health and farm profitability.
• Controlling these infestations requires careful consideration of various factors, including climate, pasture, and animal immunity.
• Preventive deworming based solely on monitoring worm burdens is often impractical for farmers.

Purpose of the Study:

• To evaluate the economic viability of different anthelmintic use strategies in cattle.
• To identify the most efficient methods for controlling helminth infestations in beef cattle.
• To provide practical recommendations for integrating deworming programs with farm management practices.

Main Methods:

• Review of monitoring systems for worm burdens, including fecal egg counts, cultures, hematological tests, and post-mortem worm recovery.
• Analysis of strategic deworming programs based on seasonal helminth incidence.
• Evaluation of tactical deworming programs that respond to outbreak-predicting factors.
• Assessment of dosing strategies aimed at minimizing pasture contamination.

Main Results:

• Integrating anthelmintic use with climatic changes, pasture management, and animal immune status is crucial for economic control of worm infestations.
• Strategic deworming programs, considering seasonal helminth variations, offer an efficient approach for beef cattle.
• Tactical deworming can further improve the economics by timing treatments to prevent outbreaks.
• The most efficient method involves dosing practices that ensure longer periods of pasture freedom from contamination.

Conclusions:

• Economic control of cattle helminthiasis relies on a multifaceted approach, integrating anthelmintics with environmental and host factors.
• Strategic and tactical deworming programs, particularly those minimizing pasture contamination, represent the most effective and economical methods for beef cattle farmers.
• Optimized deworming strategies are essential for sustainable and profitable cattle farming.