The musculoskeletal system (see Introduction to the Biology of the Musculoskeletal System) includes the bones, muscles, ligaments, tendons, and joints, which support and move the body.
Lambing. Ewes generally lamb around 145 days after mating. Some of course will be earlier & some later, but 145 days is the norm. For a successful lambing, ewes need to receive good nutrition, particularly in the last month of pregnancy when the lamb will approximately double in size.
The first milk that a ewe produces after lambing is called colostrum. It is very nutritious and contains antibodies that help lambs fight off diseases during the early part of their lives. The ewe only produces colostrum for 24 hours. It is essential that lambs consume adequate colostrum. An amount equivalent to 10 percent of their body weight is recommended. Lambs will start to nibble on solid food (hay, grass, and grain) soon after birth. By the time they are 4 to 6 weeks old, they may be obtaining as much as 50 percent of their nutrients from sources other than their mother's milk.