THE EFFECT OF EXOGENOUS CALCIUM AND l-THYROXINE ON PARTURITION IN THE RADIOIODINE THYROIDECTOMIZED RAT

摘要

The number of pregnancies was drastically reduced in the hypothyroid animals. Thyroid supplement brought the number of conceptions to well within the normal limits. No difference in fertility was observed when TH, T 4 or T3 were used as the thyroid replacement.nStill births and prolonged gestation were common in surgically thyroparathyroidectomized animals and in animals whose thyroids 131 had been destroyed with I 13.The number of fetal deaths was reduced, and the length of gestation was reduced to the normal 23 days by intragastric administration of veterinary calcium gluconate daily for at least 5 days before term in the I irradiated, thyroxine-treated animals.