Why rotation beats set-stocking on a smallholding

If your sheep have the run of the same two or three acres all year, you will know the symptoms: bare patches around the gate and trough, tufty rank grass in the corners, and lambs that seem to pick up worms no matter what you do. Set-stocking keeps sheep on the same ground, so the worm larvae they shed are constantly being picked up again on the next mouthful. Rotation breaks that cycle. Grass gets a proper rest, regrows leafy and clean, and the larvae left behind have time to die off before stock return.

The other gain is grass. A rested sward puts on leaf far faster than one that is nibbled to the bone, and on a small block that difference is worth more than an extra bag of feed.

How many paddocks do you actually need?

Four is the minimum that works; eight to twelve is where rotation really starts to pay. You can create them with permanent fencing or, far cheaper, with electric netting moved every few days. A few things are worth getting right before you start:

• Water. Sheep will not walk far for a drink. Plan a mobile trough or a run of pipe so every paddock has water within about 200 metres.
• Shape. Long, narrow paddocks are easier to strip-graze than squares. A front and back electric fence lets you move stock on without re-fencing the whole block.
• Access. Keep a gateway or gap into every paddock so you can get sheep in and out without chasing them along a fence line.
• Sacrifice area. Keep one small, hard-wearing corner for wet weather, holding sheep and feeding. Better to poach one patch than the whole holding.

As a rough guide, 50 ewes with twins will clear about half an acre a day when spring grass is motoring, and nearer two acres a day in a dry August. Treat that as a starting point and adjust by eye.

How long to graze and how long to rest

Short graze, long rest — as simple as that. Aim to have sheep on a paddock for two to four days, five at the very outside. Any longer and they start grazing the regrowth, which sets the sward back and, worse, means they are eating larvae that have just hatched.

Rest periods matter just as much. In warm, wet weather, worm eggs hatch quickly and larvae become infective within days, but they need moisture and shade to survive. A rest of three to four weeks in summer, and six to eight weeks in autumn, is enough to reduce the challenge noticeably. In cold or dry conditions, larvae die off far more slowly, so sixty days or more is safer, and over winter much longer still.

In practice, that means you need enough paddocks that each one gets at least three weeks of rest during the growing season. With only four paddocks, grazing each for four days gives a rest of just twelve days — far too short in June. Four paddocks can work for a small flock in early spring or on a large enough block that the maths still adds up, but most smallholders are better off aiming for six or more.

Reading the sward, not the calendar

Dates will mislead you; grass will not. Learn to judge two things: how short you have grazed, and how tall the regrowth is.

• Graze down to 4–5 cm, no lower. Sheep will happily nibble closer if left to it, but that removes the leaf the plant needs to regrow and lets moss and weeds creep in.
• Move them on when the paddock hits that height, not when it looks tidy.
• Do not return until the sward is 8–10 cm and leafy — roughly the three-leaf stage on ryegrass. If it comes back as a tufty, stemmy mess, you rested it too long.

A sward stick, or even a walking cane with marks on it, gives you a consistent read and takes ten seconds per paddock.

Making rotation work alongside worm control

Rotation reduces the worm challenge; it does not remove it. Faecal egg counts are far more useful than the calendar — take samples from a representative group every four to six weeks through the grazing season and use them to decide whether anything needs treating. Nematodirus is the spring exception and follows its own pattern, so keep an eye on the forecast warnings.

The real prize with a small flock is clean grazing for lambs. Put lambs onto the paddocks that have had the longest rest, ideally those grazed last by ewes, and keep them ahead of the ewes in the rotation. Ewes carry some immunity and shed fewer eggs, so lambs following ewes onto rested grass meet a much lower challenge. Never put lambs back onto a paddock they themselves grazed recently — that is the quickest way to undo the good work.

Practical snags and how to handle them

Old, wet ground will poach. On heavy clay, graze the drier paddocks in winter and accept that one field will look rough come March. Move stock on before they churn it up, and use a back fence so they cannot wander back into the mud. On light, sandy ground, graze tighter and rest longer, because larvae survive well where conditions stay dry.

Mobile water, a reliable energiser, and a dog or a bucket of nuts to move sheep are the bits of kit that make the difference between a system that runs and one you abandon by June. Start simple: divide whatever you have into four, graze for three or four days, and move on. Then split one paddock with a reel of netting and see how it goes. Most smallholders end up at six or eight paddocks within a season and wonder why they put up with set-stocking for so long.