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.
Ewes that are in poor body condition due to age and/or missing teeth should be culled. Ewes with chronic hoof problems (e.g. foot rot) should be culled. Gestation (pregnancy) The average gestation length in sheep varies from 142 to 152 days. The average is 147 days.rossbred ewe lambs cycle at a younger age than purebred ewe lambs. The estrus (or heat) cycle Reproduction in non-human mammals is regulated by an estrus cycle. In sheep, the length of the estrus cycle ranges from 13 to 19 days and averages 17 days.