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THE EFFECT OF FACTORS ASSOCIATED WITH THE MALE ON NUMBERS OF OVULATIONS, UTERINE WEIGHT AND PITUITARY LH CONTENT IN THE RAT

Summary.: The presence of a male from the afternoon of pro-oestrus to the following morning resulted in significant increases in anterior pituitary and uterine weights both in female rats on an unrestricted food intake and in underfed females. A significant decrease in pituitary LH content was apparent in the underfed group exposed to males. A trend towards an increased number of ovulations was found in females of both groups subjected to the presence of a male when compared to control animals but the difference did not reach significance.