High Technology Options for Sheep Shearing: Improved Shearing Devices

Wool production is a very important factor in the Australian economy, representing $3 billion in exports. Nevertheless, rising production costs and growing competition from manmade fibres necessitate increased attention to all aspects of productivity if the industry worldwide is to remain viable. As some 80 per cent of labour content is involved in harvesting wool, improvements in the shearing process potentially offer particular opportunities for economies. This article reviews the results of a widely based Australian research programme which has investigated the fundamental physics of wool severance, especially in terms of energy requirement, leading to improved design of shearing devices incorporating more efficient motors and novel cutter materials. Subsequent articles will review the process of automated mechanical shearing and chemical and biological defleecing.