Grazing management and stocking strategy decisions for pasture-based beef systems: experimental confirmation vs....

Area of Science:

• Rangeland Ecology and Management
• Animal Production Systems
• Sustainable Agriculture

Background:

• Grazing management decisions influence pasture sustainability and livestock production.
• Stocking strategies are broadly categorized as continuous or rotational grazing.
• Rotational grazing, including mob stocking and regenerative grazing, is often lauded for purported benefits.

Purpose of the Study:

• To compare the efficacy of continuous versus rotational grazing systems.
• To evaluate the experimental evidence supporting claims of enhanced benefits from rotational grazing strategies.
• To inform grazing management decisions with data-driven insights.

Main Methods:

• Meta-analysis of approximately 30 published experiments comparing continuous and rotational stocking.
• Analysis of liveweight gain per animal and per hectare.
• Examination of the influence of stocking rate methodology (fixed vs. variable) on outcomes.

Main Results:

• No significant difference in liveweight gain per animal between continuous and rotational stocking in 66% of studies.
• No significant difference in gain per hectare between methods in 69% of studies.
• Stocking rate methodology significantly impacted gain per hectare results (92% for fixed, 50% for variable).

Conclusions:

• Experimental data show limited differences between continuous and rotational grazing for key production metrics.
• Claims of superior benefits for rotational strategies like mob stocking or regenerative grazing lack robust experimental evidence.
• Practitioners should rely on replicated experimental data, not anecdotal evidence, for grazing management decisions.