Crutching is the removal of wool from around a sheep’s tail and between its rear legs. Unlike full shearing, which strips the entire fleece, crutching targets only the breech area to keep it clean and free of dung-matted wool. It’s one of the most routine management tasks in sheep farming, performed primarily to prevent disease and parasites.
What Gets Shorn and Why
The core area removed during crutching is the wool around the tail, crotch, and inner thighs. This region is prone to contamination from urine and feces, especially when sheep have loose stools (called scouring). Wet, soiled wool clumps into matted masses known as dags, which cling to the breech and create the perfect breeding ground for problems.
Some crutching jobs also include the belly wool. A “full crutch” or “full belly” crutch clears wool from the breech and the entire belly, which is common before lambing. A “half belly” crutch removes less belly wool and is typically done in winter to give lambs easier access to the udder without exposing the ewe to too much cold. The exact pattern depends on the time of year, the sheep’s condition, and what the farmer needs to achieve.
Flystrike Prevention
The single biggest reason farmers crutch their sheep is to prevent flystrike, a condition where blowflies lay eggs in damp, soiled wool. The larvae hatch and feed on the sheep’s skin, causing painful wounds that can kill if untreated. Breech strike is the most common type in most years, and it follows a predictable pattern: urine staining or fecal soiling softens the wool, moisture builds up against the skin, and flies move in.
Removing that wool breaks the cycle. Without a warm, damp layer of soiled fleece, flies have far less suitable habitat to lay their eggs. Research into flystrike resistance has confirmed that the amount of wool covering the breech and crutch area is directly linked to how vulnerable a sheep is to strike. Sheep with less wool coverage in those zones, whether from genetics or management, are significantly more resistant. Dag score (the amount of fecal matter clinging to the wool) is consistently one of the top two factors associated with breech strike in southern Australian flocks, reinforcing why regular crutching matters.
Benefits Before Lambing
Crutching ewes before lambing is standard practice on most sheep farms, ideally done at least two weeks before the first lambs are expected. If a full shearing isn’t practical at that time, crutching is the minimum recommended step.
The benefits for newborn lambs are immediate and measurable. A full fleece around the udder makes it harder for a wet, disoriented newborn to find the teat. Lambs that locate the teat quickly and get that first drink of colostrum have a much greater chance of survival. With unshorn ewes, it’s not uncommon to see lambs literally sucking on wool tags instead of the teat. Crutching removes that obstacle.
There’s also a hygiene dimension. Wool holds mud, manure, and birth fluids, all of which harbor pathogens. The moisture trapped in a long fleece creates a damp microclimate close to the lamb’s body, which promotes bacterial growth. When ewes are crutched or shorn, both the barn environment and the area near the lamb stay drier, reducing pathogen levels and giving lambs a cleaner start.
Impact on Wool Value
Dag-contaminated wool is worth far less than clean fleece, so crutching also protects farm income. Soiled wool has to be separated and sold at a discount, and severe dag drags down the value of the entire clip if it contaminates clean wool during handling. Australian Wool Innovation estimates that sheep with severe dag (scored 3 or higher on a 0 to 5 scale) cost producers at least $1.39 to $2.46 per head in combined crutching expenses, reduced fleece value, and treatment costs. On a large flock, that adds up quickly. Regular crutching keeps the main fleece cleaner by removing contaminated wool before it spreads to adjacent areas.
How Crutching Is Done
The process looks similar to shearing but is faster since less wool is being removed. The sheep is caught, positioned on its rump (the same posture used for shearing), and the wool is clipped away from the targeted areas. On smaller farms, hand shears, typically stainless steel blades with a spring handle, are still widely used. They offer more control and work well for farmers managing a few dozen animals. Larger operations use electric shearing handpieces, which are faster and less tiring over long runs. Blade quality matters either way: high-carbon stainless steel stays sharper longer and reduces the risk of pulling or tearing the wool.
A skilled operator can crutch a sheep in a couple of minutes. The emphasis throughout is on avoiding cuts to the skin, which can themselves become sites for infection or flystrike. Industry training standards stress safe handling at every stage, from catching and dragging to positioning and release. Any nicks that do occur are treated immediately, typically with antiseptic spray.
Timing and Frequency
Most sheep are crutched at least once a year between full shearings, though some flocks need it twice depending on climate, pasture conditions, and how quickly wool regrows. Wet regions with lush, high-protein pastures produce more scouring, which means more dag and more frequent crutching. Dry climates with lower parasite pressure may allow farmers to stretch the interval.
The two most common timing windows are before lambing (to improve lamb survival and ewe hygiene) and before the fly season in spring or summer (to reduce flystrike risk). Some farmers combine both into a single well-timed crutch if their lambing and fly seasons align. The key principle is that by the time flies are active or lambs are arriving, the breech area should be clean and short.
Crutching vs. Mulesing
Crutching is sometimes confused with mulesing, but they are very different procedures. Crutching simply removes wool and needs to be repeated as the fleece regrows. Mulesing surgically removes strips of skin from the breech area to create smooth, bare scar tissue where wool won’t grow back. Mulesing is a one-time procedure that permanently reduces wrinkle and wool coverage in the breech, but it’s controversial due to the pain involved and is banned or being phased out in several countries. Crutching carries none of those welfare concerns. It’s the wool-management equivalent of a haircut, temporary, painless when done properly, and repeated as needed throughout the sheep’s life.