What is a major factor affecting the fineness of goat fiber?

The fineness of goat fiber, particularly in breeds like cashmere or mohair goats, is significantly influenced by crimp. Crimp refers to the natural wave or curl in the fiber. This characteristic is important because finer fibers typically have more crimp, contributing to a softer and warmer texture. The presence of crimp allows the fibers to interlock better, which enhances the quality of the fleece, making it more desirable for textile production.

In contrast, while length, strength, and color are important attributes of goat fiber, they do not directly impact its fineness to the same extent as crimp does. Length is more about the practicality and usability of the fiber for certain applications, and strength measures how much stress the fiber can withstand without breaking. Color, while an aesthetic consideration, does not influence the physical characteristics that determine fineness. Therefore, crimp is recognized as a major factor influencing the fineness of goat fiber.