1. Animal Products
Wool and Mohair

2. World Wool Production Greasy wool – wool shorn once per year
Scoured wool – wool that has been washed to remove grease etc.

3. Figure 6. 11 Top 10 states for wool production, 2005 (1,000 lb)
Figure Top 10 states for wool production, 2005 (1,000 lb). Source: USDA.

4. Top Wool Producing States1. 2. 3.

7. Wool Processing
Shearing
Grading
Spinning

11. Growth of Wool and Hair Growth occurs from the follicle Blood supply
New cells push old cells

12. Structure of Wool Cuticle Medulla Outer layer
Causes fibers to cling together
Medulla
Absent in fine wools

13. Wool Production Management Nutrition Breeding Energy Protein
If protein is greater than 8% energy drives wool production
Protein
If less than 8% protein limits wool production
Breeding
Selection for fleece weight, staple length, and diameter of wool

14. Wool Terminology Fleece- the wool from one sheep
Crimp- Natural waviness of a wool fiber
Staple- Length of a wool fiber
Wool Tags-
Britch wool or Belly wool- short course wool on the rear leg and or belly
Clip-
Spin Count- number of hanks of yarn that can be spun
Yolk- oily yellow portion of wool

15. Wool

16. Figure 6.8 Wool samples of the major grades of wool based on spinning count and the blood system.