The Effect of Disconnecting the Uterus and Ovary on the Length of Gestation in the Pig

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Abstract
The normal anatomical relationship between the uterus and the ovary was altered surgically in gilts by transplanting the ovary to the uterus or the abdominal wall, or by removing 1 uterine horn and its contralateral ovary. Pregnancy was established in 14 of 92 experimental gilts. The length of gestation, farrowing, lactation and the level of estrogen and progesterone late in gestation were all normal in these 14 gilts. The decline in progesterone near the time of parturition in the experimental gifts indicates that the corpora lutea regressed at term. We conclude that in the pig, the usual connection between the uterus and the ovary is not an absolute requirement for maintenance of pregnancy and normal parturition.

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