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Etymology: L, prolongare, to lengthen, gestare, to bear
a pregnancy that lasts longer than the usual period of 41 weeks.
Pregnancy that continues past 41 weeks.
See also: gestation
may be inherited, caused by plant toxins or occur sporadically. In all forms of the disease there is absence or developmental abnormality of the fetal adrenal or pituitary glands.
inherited prolonged gestation
occurs in several forms in cattle. Pregnancy is prolonged for 3 weeks to 3 months; in one form the fetus is normal except that it is of very great size and can only be delivered by cesarean section. In another the fetus does not develop beyond the 6 month stage and is a cyclops monster with only one eye. In a third there are multiple skeletal deformities and cleft palate.