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.
(1977) suggest that the experience gained by a ewe lamb in raising a lamb at one year of age may make it a better mother at the two-year old lambing than a ewe lambing for the first time at two years of age. The data for Columbia and Targhee ewes used in this study is in Table 1.