Abstract
A Japanese black beef cattle in the later stage of pregnancy affected with abdominal hernia, 30 × 40cm in size, was administered 25mg of prostaglandin F2α intramuscularly. Vulvar edema and udder enlargement were observed 28hr after administration, and a normal female calf weighing 24kg was delivered 49hr later. During delivery, the cattle showed neither enlargement of the hernial sac nor weak labor pains. The fetal membranes were retained until spontaneous release 10days after parturition, while the fetid uterine discharge disappeared by 17days postpartum. Early recurrence of ovarian function and favorable uterine involution observed by ultrasonography indicated that prostaglandin F2α successfully induced parturition in a cattle with abdominal hernia.
