Effect of shearing time on wool

Summary Monthly measurements have been made of wool, grease, and suint production, and fibre diameter and length, in pre‐ and post‐lamb‐shorn Romney ewes over a period of 18 months. The growth of wool is some three times faster in summer than in late winter—early spring and the minimum rate decreases and occurs later with increasing number of lambs. Pre‐Iamb‐shorn wool is sound because it is shorn near the time when fibre diameter is at a minimum, and wool shorn at any other time has a thin region where it is likely to break.