prolonged pregnancies การใช้

During the last three months of pregnancy fescue poisoning increases the risk of spontaneous abortion, stillbirths, retained placenta, absent milk production, and prolonged pregnancy.
Two Australians received U . N . Population Awards, one for pioneering work in demography including the impact of the AIDS epidemic in Africa and the other for helping Ethiopian women cope with debilitating injuries from prolonged pregnancy.
Placentals are the only mammal lineage which lacks epipubic bones, and this absence has been considered to be correlated to the development of the placenta itself; epipubic bones stiffen the torso, preventing the expansion necessary for prolonged pregnancy.
Like most non-placental mammalimorphs, it had epipubic bones, aiding in its erect gait but preventing the expansion of the abdomen, making it unable to go through prolonged pregnancy and instead give birth to larval young like modern marsupials and monotremes.
These served to strengthen the torso and support abdominal and hindlimb musculature, aiding them in the development of an erect gait, but at the expense of prolonged pregnancy, forcing these animals to give birth to larval young as in modern monotremes and marsupials.