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INDUCTION OF OVULATION IN THE LION, PANTHERA LEO

Summary.: Three lionesses of different ages were injected intramuscularly with 1600 i.u. PMSG and, 3 days afterwards, with 1000 i.u. HCG. The reproductive organs were examined 2 days later; eggs were recovered from the Fallopian tubes of two of the animals, one of which had superovulated. The ovaries of the third, much younger lioness contained numerous intact follicles.

The endometrium of the two lionesses which had ovulated contained numerous glands with some degree of coiling and the vaginal epithelium was cornified. The vaginal smear of the un-ovulated animal indicated a pro-oestrous condition.