Rotational Grazing Strategies for Small Pastures

Updated April 28, 2026 — PastureLine Editorial

Continuous grazing — leaving animals on the same area indefinitely — is the fastest route to a degraded pasture. Plants that are repeatedly bitten before they can rebuild their root reserves eventually thin out, giving way to less productive species and bare soil. On small properties where the pressure per acre is already higher than on large commercial operations, this process can happen within a single season.

Rotational grazing interrupts that pattern. The basic principle: animals occupy one paddock at a time while the others rest. The rotation moves when the active paddock reaches a pre-determined grazing height — typically when forage is grazed down to about 7 to 10 cm — before moving on. The resting paddocks are not touched until they recover to 20 to 25 cm of growth, which signals adequate leaf area for photosynthesis and root replenishment.

How Many Paddocks for a Small Property

The standard recommendation for most Canadian conditions is a minimum of four paddocks, which allows a rotation long enough for adequate recovery during the active growing season. Six to eight paddocks give more flexibility, particularly during the slower growth of mid-summer drought or the shoulder seasons in spring and fall.

The math behind the paddock count: divide your target rest period (in days) by your target occupation time (in days per paddock), then add one for the paddock currently in use. In a temperate Canadian spring with fast grass growth, a rest period of 21 days with a two-day occupation per paddock means you need approximately twelve paddocks — impractical for most small properties. In practice, occupation time is extended to five to seven days on small operations, which brings the paddock count into a workable range.

Adjusting for Season

• Spring: Grass growth is fastest. Rest periods can be as short as 18 to 21 days. Move animals before they graze below the critical height — spring overgrazing sets back the pasture for the full season.
• Mid-summer: Growth slows, especially during dry spells. Extend rest periods to 35 to 45 days. If forage is inadequate, reducing stocking density temporarily is preferable to overgrazing the paddock.
• Fall: Growth picks up with cooler temperatures and increased rainfall. Allow one paddock to grow out fully without grazing — this reserves energy in the root system for winter and early spring regrowth.
• Winter: Most rotational systems in Canada cease active rotation once the ground freezes. Animals are typically moved to a sacrifice paddock or drylot to prevent damage to frozen turf by hoof traffic.

Stocking Rate Calculations

Agriculture and Agri-Food Canada uses the Animal Unit Month (AUM) as the standard measure for estimating forage demand. One AUM represents the forage consumed by a 450 kg beef cow or equivalent in one month — approximately 350 kg of dry matter.

Converting other species to AUM equivalents:

• Mature horse (500 kg): approximately 1.25 AUM
• Mature sheep (65 kg): approximately 0.2 AUM
• Goat (45 kg): approximately 0.17 AUM
• Mature beef cow with calf: 1.0 to 1.25 AUM

A typical productive pasture in Ontario under good management yields 4 to 6 AUM per hectare annually, though this varies considerably with soil quality, species composition, and rainfall. The Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) publishes current forage yield data by region and soil type that is more accurate than any general estimate.

Temporary Fencing for Internal Paddock Division

On small properties, permanent fencing for every internal paddock boundary is rarely cost-effective. A much more common approach is a single permanent perimeter fence — woven wire or high-tensile — with temporary electric fencing dividing the interior into paddocks that can be reconfigured as the herd size, season, or land condition changes.

Single-strand polywire on step-in fibreglass posts is the standard for cattle on dry, well-grounded soil. For sheep or goats, a four- to five-strand temporary electric net fence (often called electronet or sheep netting) provides a more reliable barrier on most soil types. The netting is more expensive per metre than polywire and takes longer to set up and move, but the containment reliability with small ruminants justifies the cost difference.

Water Access During Rotation

The location of water access has a larger impact on how evenly animals graze a paddock than most management guides acknowledge. Animals graze in a pattern that radiates outward from water — the 200 metres immediately surrounding a water point receives significantly higher traffic and grazing pressure than the distant corners of the same paddock.

On a rotational system, options for water placement include:

• A central laneway or corridor with permanent water access between paddocks, allowing animals to reach water regardless of which paddock they occupy.
• Portable water tanks that move with the animals into each paddock. This distributes grazing pressure more evenly but requires a reliable water supply line or frequent tank refilling.
• Permanent waterers positioned at the shared corner between two or four adjacent paddocks, accessible from multiple paddocks through a small shared corner cut-out in the fence.

Managing the Sacrifice Area

Every rotational system needs a sacrifice paddock — an area where animals can be held during extended wet periods, late fall, and winter without destroying the rest of the pasture. This area is expected to take heavy hoof pressure and will need reseeding or renovation periodically.

Locating the sacrifice area on naturally drained or gravelled ground reduces the mud management burden significantly. Installing a properly designed heavy use area pad — compacted gravel base with drainage — is documented as a best management practice by most provincial agricultural offices and reduces the maintenance workload substantially over time.