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.
Lamb is considered to be done to a medium temperature when cooked to 160 F, while well done lamb reaches a temperature of 170 F. Rolled boneless leg of lamb takes between an hour and 40 minutes and 4 1/2 hours for a 4- to 7-pound cut.