As sheep age, their fleece tends to become coarser and less uniform in texture. The quality of wool may decline due to changes in the sheep's health and nutrition, leading to variations in fiber diameter and strength. Older sheep may also produce less fleece overall, and the natural oils in the wool can diminish, affecting its luster and ease of spinning. Regular shearing and proper care can help maintain fleece quality throughout a sheep's life.
Black sheep normally turn gray as they age. Normally a ewe's fleece will get dryer and coarser and sometimes their wool will fall out in places especially if they're bred every year.
A fleece
its called a fleece
The word you're looking for is 'fleece'.
fleece
Wool is spun from the fleece of sheep.
because the wool contains lanolin
The oil is known as lanolin
With electric shears - they used to shear them with hand shears
Sheep grow wool. When the wool is shorn from a sheep it is called a fleece.
After you cut a sheeps fleece you will want to wait at least six weeks for the new coat to grow in. You may choose to wait longer for a thicker coat, but do not cut the sheeps fleece any sooner than six weeks.
because they give off an oily/fatty substance called lanolin.