The woolshed — also called the shearing shed — is the operational heart of a New Zealand sheep farm. It is the primary facility where sheep are shorn, crutched, drenched, vaccinated, dipped, weighed, and drafted. Most woolsheds are positioned centrally on the farm, on well-drained ground with good vehicle access, and as close as practical to the bulk of the grazing land to minimise mustering distances.
The woolshed has four functional areas: the holding pens, where sheep wait before being shorn; the shearing board, where shearers work; the wool room, where fleeces are skirted, classed, and pressed into bales; and the wool storage area, where bales are stacked to await collection. Sheds are described by their number of stands — the number of shearers the board can accommodate at one time. Most modern New Zealand woolsheds have two to four stands, while larger farms may have six or more. Sheep must be held dry before shearing — shearers will not work wet sheep, as wet wool heats up when baled and poses a fire risk — so holding pens are typically covered, and many farms attach covered yards directly to the shed to allow sheep to be brought in the night before shearing begins.
The wool room contains a wool table where each fleece is thrown and skirted (edges removed) before classing. A hydraulic or mechanical wool press is used to compress sorted wool into bales, which are weighed, stencilled with property and clip identification, and stored on-site until transport to a wool store or direct to a buyer.
Sheep yards are the set of interconnected pens and races used to hold, sort, and handle sheep for routine farm tasks. Yards are usually located centrally on a farm, next to the shearing shed, and comprise a large holding yard that leads into a smaller yard and then into an even smaller forcing yard, from which sheep are pushed into a drafting race that narrows to the width of one sheep at the far end, where drafting gates divert sheep into different pens. Most systems include two drafting gates, allowing a mob to be sorted three ways simultaneously — for example, separating ewes, lambs, and cast-for-age in a single pass.
The drafting race is the busiest part of the yards. It is where sheep are drenched with anthelmintics, given pour-on treatments for external parasites, ear-tagged, weighed, and condition scored. Sheep yard fences are generally about a metre high to prevent sheep from jumping over them. Modern yards are increasingly built from galvanised steel panels and may include curved forcing yard designs, which take advantage of sheep’s tendency to move in a curved path and improve flow, reducing handler effort and animal stress. Many yards have some cover over the drafting race to shade workers and stock. Portable or temporary yards may be set up in remote areas of larger farms to avoid long musters.
Weigh scales are commonly integrated into the race or at a race exit to allow individual or mob liveweight recording. Electronic identification (EID) readers may be incorporated alongside weigh scales on farms using electronic ear tags for individual animal recording, though this is more common on stud and pedigree operations than on commercial farms.
Unlike dairy farms, where cows move twice daily between paddocks and a fixed milking shed via a permanent network of races and tracks, sheep on most New Zealand farms are mustered periodically — often on a seasonal basis — and handled in batches rather than individually. The emphasis in sheep farm infrastructure is therefore on maintaining safe, functional access tracks to all parts of the farm, and on the design of mustering routes that allow stock to be moved efficiently from remote areas to the yards without excessive stress or walking distance.
On flat to rolling country, permanent farm tracks connect paddock gates to the woolshed and yards and allow vehicles, trailers, and quad bikes to move sheep and equipment across the farm. On steep hill or high country farms, mustering is done primarily on foot or on horseback, with working dogs driving mobs from high ground down to holding paddocks and eventually to yards. Temporary portable yards or holding paddocks may be used as staging points on larger properties.
Gates and water troughs are positioned throughout the farm to support stock movement, drafting in the paddock, and access management. Water supply infrastructure — troughs, pipes, and pumps — is a significant capital component on most New Zealand sheep farms, particularly on dry hill and high country where reliable water supply directly affects where stock can be grazed and when paddocks can be used.
Some sheep farms, particularly those in areas with higher lice or fly-strike risk, have a dip or spray race — a facility designed to apply insecticide treatments to the whole body of sheep, including the fleece. A plunge dip is a bath of insecticide solution through which sheep swim, fully immersing the fleece. A shower dip or spray race applies insecticide under pressure from above and below as sheep walk through. Plunge dips have become less common as newer pour-on and injectable treatments have reduced the need for whole-body immersion, but spray races remain in use on some farms. Any dipping facility requires effluent and spent chemical management in compliance with regional council rules and the ACVM Act.
Sheep farms generate significantly less concentrated effluent than dairy farms. The main sources of effluent on a sheep farm are the woolshed, yards, and any stand-off or feedlot areas used during wet weather or supplementary feeding. Woolshed effluent includes wash-down water, urine and faeces from holding pens and the shearing board, wool grease (lanolin), and chemical residues from dipping or drenching. Regional council rules require woolshed effluent to be contained and managed to prevent discharge to waterways. Most farms use a sump and small holding pond system to collect woolshed effluent for land application.
During winter feeding on forage crops or in stand-off areas, sheep may congregate in sufficient numbers to generate pugging and effluent management challenges similar to those seen in intensive beef or dairy systems. In these situations, effluent and soil management principles — appropriate stocking density, strategic placement of supplementary feed, and post-winter pasture recovery — apply in the same way as for other species.
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