Pasture Hectares for Cattle Herd

Pasture stocking rate per hectare

Stocking rate gets measured in animal units per hectare (UA/ha), with 1 UA = 450 kg live weight, the equivalent of one adult cow. A degraded pasture carries only 1–2 UA/ha. Once it's well managed, that climbs to 2–4 UA/ha, and rotational grazing (the Voisin / André Voisin system) can push it to 6–8 UA/ha when you've got paddocks, rest periods and decent fertilization in place. Take 100 ha of well-managed Brachiaria: it holds 200–400 head at 450 kg apiece. Stock it too heavy and the sward breaks down; stock it too light and forage goes to waste.

Applications

This shows up in extensive beef cattle ranching across Brazil — the Cerrado, the Pantanal, the Amazon frontier — and in ILPF systems (Crop-Livestock-Forest Integration). EMBRAPA Pecuária Sudeste puts out carrying-capacity tables broken down by forage species (Brachiaria, Panicum, Andropogon) and rainfall zone. You'll lean on it for pasture leasing contracts and for planning out how far to expand the herd.

FAQ

Why use UA and not just head count? A 200 kg calf eats nowhere near what a 600 kg bull does. UA puts everything on the same footing by referencing a 450 kg animal.

How much does rotational grazing help? It can roughly triple capacity, from 2 to 6 UA/ha, since the grass gets 30–45 days of rest between grazings. The catch is you need fencing, water laid on in every paddock, and someone managing it.

What is ILPF? It stands for Integrated Crop-Livestock-Forest, a system EMBRAPA has championed that runs soy/corn, cattle and eucalyptus on the same ground. The payoff is better profitability and more carbon locked away.