SPRING SUMMER BONUS MAGAZINE 2026

Measuring what matters: turning data into decisions in extensive ruminant systems Danie van Wyk - Technical Specialist: Extensive ruminant Production systems, whether cattle on natural veld or sheep in arid grazing regions, have traditionally relied on experience, visual assessment, and producer intuition for makingmanagement decisions. While these remain valuable, modern livestock systems increasingly require quantifiable and objectivemeasurements to remain competitive and profitable. The primary challenge is no longer the lack of data, but rather: • Identifying which parameters are most relevant • Interpreting these parameters correctly • Converting information into practical and profitable decisions From observation to quantification Extensive systems are inherently variable due to fluctuations in: • Rainfall • Forage quality and availability • Animal genetics • Management practices Traditional visual indicators such as body condition score, dung consistency, and grazing behavior are still useful, but they are subjective and often reactive rather than predictive. The integration of data enables a transition to- wards more structured management: Traditional approach Data-driven approach Reactive decision-making Proactive intervention Group-based management Individual animal management Assumptions Measurable performance indicators This shift forms the basis of precision livestock farming, where continuous monitoring allows for earlier and more accurate decision-making. Key production parameters to measure Not all data contributes equally to profitability. The focus should remain on high-impact biologi- cal and economic drivers. Table 1: Comparison of Traditional and Data-Driven Approaches Spring/Summer 2026 BONUS www.agribonus.co.za 154