02/19/2026
More wool information
Wool fiber strengthđź’Ş is one of the most important traits when determining raw wool value. It follows closely behind micron, yield and vegetable matter in order of importance. If wool fibers are weak or tender, it can impact how the wool processes and how much waste or noils are created. Wasty wools are costly to the processor and therefore discounted. Low staple strength can be a problem in US where sheep graze in the many areas with dramatic seasonal fluctuations in pasture quality and quantity.
The weakest point in a staple (position of break) often coincides with the change in feed supply at the start or end of the season. However, there are a number of other factors that contribute to the strength of the wool. The amount and timing of supplements fed during winter, exposure to seasonal rainfall, weaning procedures and reproductive stress may all contribute. In addition to these environmental factors, there are differences in staple strength that are related to the age and the genotype of the sheep. These anomalies indicate a complex problem.
How can we make sure we are growing sound wool fibers? Avoid, if possible, stressors that will create those tenders spots in the wool.
